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Shop By Brand

The Following brands are available based on your search.

  • Gates
    Gates
  • Motorad
    Motorad
  • Stant
    Stant

Best Selling Genuine Mack Thermostats

  • We Stock the following top leading brands, including Gates, Stant, Motorad
  • Constantly Updated Inventory of Mack Replacement Thermostat Parts

We stock Thermostat parts for most Mack models, including CL, CM, CXU, LE, MC, MH, MR, R, RD, RS, RW, RWL, RWS, WS.


Gates
1984 Mack RWS Engine Coolant Thermostat 6 Cyl 18.8L Gates - Heavy-Duty Thermostat

P311-311DA22    33578  New

9N3711 , 31808 , 8100 , 613080 , VD111800-4 , 8929032 , 3002964 , 14538 , VD111800-4W , S-451-180 , 027074997 , 23503825 , W359-180 , 2063-180 , 065561201 , 450-180 , 12301822 , DV-238 , 810080 , 211887D , 5245156 , 132-86 , 169268 , 3076489 , 491416 , 4W4794 , 2060-180 , 132-27 , 32508 , 455-180 , 4631418 , S-450-180 , 12302515 , 5102651 , 26-2868 , 0199221A , 26-2918 , 153154A , 5N6242 , 32248 , 12302408 , 153154G , 201737 , 215SB165P3 , ZAM-2858 , 027928 , 199221A , S-453-180 , 31178 , 33578 , 880080 , 132-61 , RT-198 , 277298 , 31778 , 782A5 , 2R2911 , 5000667753 , DV-338 , WT/8S1 , 132-36 , 74631823 , 8800080 , W356-180 , 6L5851 , 356-180 , 14518 , MD19364 , 359-180 , 176823B , 9N3720 , 4930594 , 4508 , 965A51 , RT-340 , 451-180 , 524676C1 , 7E9280 , 146077 , ZAM-2908 , 110110004 , 5148430 , 83816

Qty:
28.09
Gates Engine Coolant Thermostat
  • ; 180 Degree; Seal included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Design: Weir-stat
    • Flange Thickness (in): .22
    • Height: 3.16
    • Height Between Flanges: 1.3
    • Height from Flange (in): 1.64
    • Includes Installation Tool: No
    • Jiggle Pin Weep Hole: No
    • Material: Stainless Steel, Steel, Copper
    • Number of Jiggle Pins/Check Valves: 0
    • Number of Seals: 2
    • Seal Type: O-ring & Perimeter Seal
    • Sealing Flange Outside Diameter: 2.87
    • Start to Open Temperature:
      • 180
      • 82
    • Type: Heavy-duty Thermostat
    • Valve Diameter (in): 2.27
  • Suggested Purchase Quantity: 6
    • Most jobs typically require 6 of this item.
Brand: Gates
Additional Fitment Information:
Vehicle Fuel Type Block Engine CID CC
1984 - Mack RWS DIESEL L 6 Cyl 18.8L 1150 18848
Gates
1984 Mack RWS Engine Coolant Thermostat 6 Cyl 18.8L Gates - Heavy-Duty Thermostat

P311-4F457A3    33577  New

S-451-170 , RT-177 , 5119826 , 199221C , 380093C , 153154F , 12302514 , S-453-170 , 26-2917 , 132-35 , 199221B , 176823A , WT/8S , Y201366 , 657GC39P70 , 4631417 , 33577 , 8101 , ZAM-2857 , 027074995 , 5106240 , 14537 , 4507 , 32247 , 810070 , 110110005 , S-450-170 , 450-170 , RT-339 , 0199221C , 027074993 , 12302406 , 524675C1 , 2060-170 , 12301821 , 23503826 , 2063-170 , VD10176B , MD19332 , DV-237 , 132-26 , 31777 , 451-170 , 1601149 , 613070 , 781A5 , 5104832 , 065561202 , 31807 , W356-170 , ZAM-2907 , 14517 , 26-2867 , 880070 , 208627A , 8800070 , DV-337 , 359-170 , 32507 , 356-170 , 83814 , W359-170 , 0199221B , A026742 , VD111800-1 , 211887A , 455-170 , 215SB165P2 , 132-57 , VD111800-1W

Qty:
27.40
Gates Engine Coolant Thermostat
  • ; 170 Degree; Seal included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Design: Weir-stat
    • Flange Thickness (in): .2
    • Height: 3.2
    • Height Between Flanges: 1.4
    • Height from Flange (in): 1.6
    • Includes Installation Tool: No
    • Jiggle Pin Weep Hole: No
    • Material: Stainless Steel, Steel, Copper
    • Number of Jiggle Pins/Check Valves: 0
    • Number of Seals: 2
    • Seal Type: O-ring & Perimeter Seal
    • Sealing Flange Outside Diameter: 2.88
    • Start to Open Temperature:
      • 170
      • 77
    • Type: Heavy-duty Thermostat
    • Valve Diameter (in): 2.27
  • Suggested Purchase Quantity: 6
    • Most jobs typically require 6 of this item.
Brand: Gates
Additional Fitment Information:
Vehicle Fuel Type Block Engine CID CC
1984 - Mack RWS DIESEL L 6 Cyl 18.8L 1150 18848
Stant
1985 Mack MR Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-59B105E    14838  New

33968 , 520080 , 1W8802 , 4W0160 , 30258 , 7C3472 , 4048-80 , 4T149-003 , 4T149003

Qty:
16.53
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 180 Degrees
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.5
    • Flange Diameter (With Seal) (in): N/a
    • Flange Diameter (Without Seal) (in): 2.125
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.17
    • Height from Flange to Top of Bridge (in): 0.82
    • Temperature (F): 180 Degrees
  • Original equipment design. Made of durable material for a long lasting life. Stainless steel assembly engineered for a smooth performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Stant
Additional Fitment Information:
Vehicle
1985 - Mack MR
Stant
1984 Mack MC Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-47201EA    14839  New

33969 , 4048-90 , 30259 , 4T149-004 , 4T149004 , 520090

Qty:
16.53
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 192 Degrees
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.5
    • Flange Diameter (With Seal) (in): N/a
    • Flange Diameter (Without Seal) (in): 2.125
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.17
    • Height from Flange to Top of Bridge (in): 0.82
    • Temperature (F): 192 Degrees
  • Original equipment design. Made of durable material for a long lasting life. Stainless steel assembly engineered for a smooth performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Stant
Additional Fitment Information:
Vehicle
1984 - Mack MC
Stant
1998 Mack LE Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-28E1827    14978  New

3907242 , 33966 , 30388 , 3901845 , 3928639 , 3922477 , 4058-80 , 509180 , 3928640

Qty:
11.64
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 180 Degrees W/Dual Thermostats
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.1
    • Flange Diameter (With Seal) (in): N/a
    • Flange Diameter (Without Seal) (in): 1.7
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.36
    • Height from Flange to Top of Bridge (in): 0.586
    • Temperature (F): 180 Degrees
  • Original equipment design. Made of durable material for a long lasting life. Stainless steel assembly engineered for a smooth performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Stant
Additional Fitment Information:
Vehicle Submodel Fuel Type
1998 - Mack LE LE600 DIESEL
Motorad
1992 Mack MH Engine Coolant Thermostat 6 Cyl 14.6L Motorad - Standard

P311-1DFE365    880090  New

S453190 , 4549 , 880090 , 14539 , 14519 , P4549 , S452190 , 1601-290258 , 33579 , 8929878 , 15229 , 613-090 , 14549 , 23504473 , S454190 , 34319 , 88009 , 9880090 , 14529 , THD289 , 14509 , S450190 , 33599 , 4047-90 , S451190 , 12TH8E , 14239

Qty:
Motorad Engine Coolant Thermostat
  • Thermostat-190 Degrees
  • ; Temperature 190F Includes seal
  • Standard
  • Product Attributes:
    • Bypass Diameter: 2.87 In
    • Flange Thickness: 0.27 In
    • Installation Tool Included: No
    • Sealing Flange Outside Diameter: 2.87
    • Temperature (Degree): 192
  • Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant.
Brand: Motorad
Additional Fitment Information:
Vehicle Block Engine CID CC
1992 - Mack MH L 6 Cyl 14.6L 893 14636
Stant
1981 Mack RWS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-171F020    14538  New

262918 , MD19364 , 132-86 , ZAM-2908 , 459-180 , 455180 , 32248 , 7E9280 , 110110004 , DV338 , 13236 , 132-61 , VD1118004 , 13261 , 4508 , 356-180 , 153154A , DV238 , 2063180 , 356180 , 9N3711 , 4631418 , 199221A , W359180 , W359-180 , 26-2918 , 6L5851 , 12302408 , 211887D , 657GC327P80 , 027928 , WT/8S1 , 132-27 , RT-340 , 9N3720 , 31808 , 782A5 , 965A51 , VD111800-4 , RT-198 , 2060-180 , 455-180 , 5148430 , 3076489 , RT340 , 451180 , VD111800-4W , 065561201 , 3002964 , RT198 , 74631823 , 176823B , 201737 , 23533312 , 33578 , DV-238 , 23503825 , 524676C1 , 13286 , 146077 , 8929032 , 31178 , 4W4794 , 31778 , W356-180 , 12301822 , 26-2868 , ZAM2858 , 5N6242 , 5102651 , ZAM-2858 , 277298 , 880080 , 2060180 , 027074997 , 262868 , 2R2911 , 153154G , DV-338 , 451-180 , 491416 , 215SB165P3 , 359-180 , VD1118004W , 13227 , W356180 , 359180 , 450-180 , ZAM2908 , 169268 , 5000667753 , 132-36 , 12302515 , 83816 , 613080 , 0199221A , 2063-180 , 450180

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 180 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 180 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1981 - Mack RWS
Stant
1989 Mack MH Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-5CC8CFB    14536  New

12302405 , MD19366 , 211887 , W356-160 , 276336R91 , WT/8 , ZAM-2856 , 6409409 , ZAM2906 , VD1118002W , 451160 , 359-160 , 767A5 , 152154 , 450160 , 491417 , 12TH8B , 359160 , 32246 , 132-34 , 26-2866 , 451-160 , 153154B , W359160 , 132-25 , Y205566 , 262916 , 199221D , 027074996 , 657GC327P60 , 9S9160 , 613060 , 880060 , 4N2212 , 215SB165P1 , 2W7133 , W359-160 , 063837 , 135675 , 83811 , 13225 , 6L7291 , 262866 , 153154E , 4L7615 , 31776 , 31806 , 450-160 , 356-160 , RT342 , DV336 , VD1118002 , 277296 , W356160 , DV-236 , DV236 , VD111800-2 , 194245 , 12302513 , ZAM2856 , 26-2916 , 13234 , 153154C , 5102112 , RT338 , 9N2894 , 657GC39P55 , VD111800-2W , 2063160 , 3002742 , 33576 , 153154 , RT-342 , 199221E , 4506 , 356160 , A010681 , Y201365 , 204586 , 8N4935 , 5118264 , DV-336 , 2063-160 , RT-338 , 176823 , 3076489 , 23503827 , 4047-60 , 4631416 , 9N3017 , 146076 , ZAM-2906

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 160 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 160 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1989 - Mack MH
Stant
1984 Mack R Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-10B9A76    14539  New

707-195 , 613090 , 451190 , 7C3095 , 32249 , 33579 , 23504474 , 199221 , 4509 , 23504473 , 451-190 , 0199221 , 110110007 , 880090 , 4047-90 , 12TH8E , 23504472 , 459-192 , 211887E , 707195

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 190 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 190 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1984 - Mack R
Stant
1984 Mack RWS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-171F020    14538  New

262918 , MD19364 , 132-86 , ZAM-2908 , 459-180 , 455180 , 32248 , 7E9280 , 110110004 , DV338 , 13236 , 132-61 , VD1118004 , 13261 , 4508 , 356-180 , 153154A , DV238 , 2063180 , 356180 , 9N3711 , 4631418 , 199221A , W359180 , W359-180 , 26-2918 , 6L5851 , 12302408 , 211887D , 657GC327P80 , 027928 , WT/8S1 , 132-27 , RT-340 , 9N3720 , 31808 , 782A5 , 965A51 , VD111800-4 , RT-198 , 2060-180 , 455-180 , 5148430 , 3076489 , RT340 , 451180 , VD111800-4W , 065561201 , 3002964 , RT198 , 74631823 , 176823B , 201737 , 23533312 , 33578 , DV-238 , 23503825 , 524676C1 , 13286 , 146077 , 8929032 , 31178 , 4W4794 , 31778 , W356-180 , 12301822 , 26-2868 , ZAM2858 , 5N6242 , 5102651 , ZAM-2858 , 277298 , 880080 , 2060180 , 027074997 , 262868 , 2R2911 , 153154G , DV-338 , 451-180 , 491416 , 215SB165P3 , 359-180 , VD1118004W , 13227 , W356180 , 359180 , 450-180 , ZAM2908 , 169268 , 5000667753 , 132-36 , 12302515 , 83816 , 613080 , 0199221A , 2063-180 , 450180

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 180 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 180 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Stant
Additional Fitment Information:
Vehicle
1984 - Mack RWS
Stant
1984 Mack RWS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-10B9A76    14539  New

707-195 , 613090 , 451190 , 7C3095 , 32249 , 33579 , 23504474 , 199221 , 4509 , 23504473 , 451-190 , 0199221 , 110110007 , 880090 , 4047-90 , 12TH8E , 23504472 , 459-192 , 211887E , 707195

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 190 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 190 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Stant
Additional Fitment Information:
Vehicle
1984 - Mack RWS
Stant
1984 Mack RWS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-5CC8CFB    14536  New

12302405 , MD19366 , 211887 , W356-160 , 276336R91 , WT/8 , ZAM-2856 , 6409409 , ZAM2906 , VD1118002W , 451160 , 359-160 , 767A5 , 152154 , 450160 , 491417 , 12TH8B , 359160 , 32246 , 132-34 , 26-2866 , 451-160 , 153154B , W359160 , 132-25 , Y205566 , 262916 , 199221D , 027074996 , 657GC327P60 , 9S9160 , 613060 , 880060 , 4N2212 , 215SB165P1 , 2W7133 , W359-160 , 063837 , 135675 , 83811 , 13225 , 6L7291 , 262866 , 153154E , 4L7615 , 31776 , 31806 , 450-160 , 356-160 , RT342 , DV336 , VD1118002 , 277296 , W356160 , DV-236 , DV236 , VD111800-2 , 194245 , 12302513 , ZAM2856 , 26-2916 , 13234 , 153154C , 5102112 , RT338 , 9N2894 , 657GC39P55 , VD111800-2W , 2063160 , 3002742 , 33576 , 153154 , RT-342 , 199221E , 4506 , 356160 , A010681 , Y201365 , 204586 , 8N4935 , 5118264 , DV-336 , 2063-160 , RT-338 , 176823 , 3076489 , 23503827 , 4047-60 , 4631416 , 9N3017 , 146076 , ZAM-2906

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 160 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 160 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Stant
Additional Fitment Information:
Vehicle
1984 - Mack RWS
Stant
2007 Mack CL Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-414BF3C    15009  New

34149 , 614190 , 4952204 , 4973374 , 4319847 , 38009

Qty:
22.90
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 190 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): N/a
    • Flange Diameter (With Seal) (in): N/a
    • Flange Diameter (Without Seal) (in): 3.211
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.83
    • Temperature (F): 190 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle Submodel Fuel Type
2007 - Mack CL CL700 DIESEL
Stant
1985 Mack MR Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-5CC8CFB    14536  New

12302405 , MD19366 , 211887 , W356-160 , 276336R91 , WT/8 , ZAM-2856 , 6409409 , ZAM2906 , VD1118002W , 451160 , 359-160 , 767A5 , 152154 , 450160 , 491417 , 12TH8B , 359160 , 32246 , 132-34 , 26-2866 , 451-160 , 153154B , W359160 , 132-25 , Y205566 , 262916 , 199221D , 027074996 , 657GC327P60 , 9S9160 , 613060 , 880060 , 4N2212 , 215SB165P1 , 2W7133 , W359-160 , 063837 , 135675 , 83811 , 13225 , 6L7291 , 262866 , 153154E , 4L7615 , 31776 , 31806 , 450-160 , 356-160 , RT342 , DV336 , VD1118002 , 277296 , W356160 , DV-236 , DV236 , VD111800-2 , 194245 , 12302513 , ZAM2856 , 26-2916 , 13234 , 153154C , 5102112 , RT338 , 9N2894 , 657GC39P55 , VD111800-2W , 2063160 , 3002742 , 33576 , 153154 , RT-342 , 199221E , 4506 , 356160 , A010681 , Y201365 , 204586 , 8N4935 , 5118264 , DV-336 , 2063-160 , RT-338 , 176823 , 3076489 , 23503827 , 4047-60 , 4631416 , 9N3017 , 146076 , ZAM-2906

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 160 Degrees Seal Included Seal Included W/O Low Flow Cool.
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 160 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1985 - Mack MR
Stant
1985 Mack MR Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-171F020    14538  New

262918 , MD19364 , 132-86 , ZAM-2908 , 459-180 , 455180 , 32248 , 7E9280 , 110110004 , DV338 , 13236 , 132-61 , VD1118004 , 13261 , 4508 , 356-180 , 153154A , DV238 , 2063180 , 356180 , 9N3711 , 4631418 , 199221A , W359180 , W359-180 , 26-2918 , 6L5851 , 12302408 , 211887D , 657GC327P80 , 027928 , WT/8S1 , 132-27 , RT-340 , 9N3720 , 31808 , 782A5 , 965A51 , VD111800-4 , RT-198 , 2060-180 , 455-180 , 5148430 , 3076489 , RT340 , 451180 , VD111800-4W , 065561201 , 3002964 , RT198 , 74631823 , 176823B , 201737 , 23533312 , 33578 , DV-238 , 23503825 , 524676C1 , 13286 , 146077 , 8929032 , 31178 , 4W4794 , 31778 , W356-180 , 12301822 , 26-2868 , ZAM2858 , 5N6242 , 5102651 , ZAM-2858 , 277298 , 880080 , 2060180 , 027074997 , 262868 , 2R2911 , 153154G , DV-338 , 451-180 , 491416 , 215SB165P3 , 359-180 , VD1118004W , 13227 , W356180 , 359180 , 450-180 , ZAM2908 , 169268 , 5000667753 , 132-36 , 12302515 , 83816 , 613080 , 0199221A , 2063-180 , 450180

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 180 Degrees Seal Included Seal Included W/O Low Flow Cool.
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 180 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1985 - Mack MR
Stant
1985 Mack MR Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-10B9A76    14539  New

707-195 , 613090 , 451190 , 7C3095 , 32249 , 33579 , 23504474 , 199221 , 4509 , 23504473 , 451-190 , 0199221 , 110110007 , 880090 , 4047-90 , 12TH8E , 23504472 , 459-192 , 211887E , 707195

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 190 Degrees Seal Included Seal Included W/O Low Flow Cool.
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 190 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1985 - Mack MR
Stant
1985 Mack RS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-10B9A76    14539  New

707-195 , 613090 , 451190 , 7C3095 , 32249 , 33579 , 23504474 , 199221 , 4509 , 23504473 , 451-190 , 0199221 , 110110007 , 880090 , 4047-90 , 12TH8E , 23504472 , 459-192 , 211887E , 707195

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 190 Degrees Seal Included Seal Included As required
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 190 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1985 - Mack RS
Stant
1982 Mack WS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-171F020    14538  New

262918 , MD19364 , 132-86 , ZAM-2908 , 459-180 , 455180 , 32248 , 7E9280 , 110110004 , DV338 , 13236 , 132-61 , VD1118004 , 13261 , 4508 , 356-180 , 153154A , DV238 , 2063180 , 356180 , 9N3711 , 4631418 , 199221A , W359180 , W359-180 , 26-2918 , 6L5851 , 12302408 , 211887D , 657GC327P80 , 027928 , WT/8S1 , 132-27 , RT-340 , 9N3720 , 31808 , 782A5 , 965A51 , VD111800-4 , RT-198 , 2060-180 , 455-180 , 5148430 , 3076489 , RT340 , 451180 , VD111800-4W , 065561201 , 3002964 , RT198 , 74631823 , 176823B , 201737 , 23533312 , 33578 , DV-238 , 23503825 , 524676C1 , 13286 , 146077 , 8929032 , 31178 , 4W4794 , 31778 , W356-180 , 12301822 , 26-2868 , ZAM2858 , 5N6242 , 5102651 , ZAM-2858 , 277298 , 880080 , 2060180 , 027074997 , 262868 , 2R2911 , 153154G , DV-338 , 451-180 , 491416 , 215SB165P3 , 359-180 , VD1118004W , 13227 , W356180 , 359180 , 450-180 , ZAM2908 , 169268 , 5000667753 , 132-36 , 12302515 , 83816 , 613080 , 0199221A , 2063-180 , 450180

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 180 Degrees Seal Included Seal Included As required
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 180 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1982 - Mack WS
Stant
1981 Mack RS Engine Coolant Thermostat Stant - Heavy-Duty Thermostat

P311-5CC8CFB    14536  New

12302405 , MD19366 , 211887 , W356-160 , 276336R91 , WT/8 , ZAM-2856 , 6409409 , ZAM2906 , VD1118002W , 451160 , 359-160 , 767A5 , 152154 , 450160 , 491417 , 12TH8B , 359160 , 32246 , 132-34 , 26-2866 , 451-160 , 153154B , W359160 , 132-25 , Y205566 , 262916 , 199221D , 027074996 , 657GC327P60 , 9S9160 , 613060 , 880060 , 4N2212 , 215SB165P1 , 2W7133 , W359-160 , 063837 , 135675 , 83811 , 13225 , 6L7291 , 262866 , 153154E , 4L7615 , 31776 , 31806 , 450-160 , 356-160 , RT342 , DV336 , VD1118002 , 277296 , W356160 , DV-236 , DV236 , VD111800-2 , 194245 , 12302513 , ZAM2856 , 26-2916 , 13234 , 153154C , 5102112 , RT338 , 9N2894 , 657GC39P55 , VD111800-2W , 2063160 , 3002742 , 33576 , 153154 , RT-342 , 199221E , 4506 , 356160 , A010681 , Y201365 , 204586 , 8N4935 , 5118264 , DV-336 , 2063-160 , RT-338 , 176823 , 3076489 , 23503827 , 4047-60 , 4631416 , 9N3017 , 146076 , ZAM-2906

Qty:
22.23
Stant Engine Coolant Thermostat
  • Stant Heavy-Duty Thermostat
  • ; Temperature 160 Degrees Seal Included Seal Included As required
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): 1.03
    • Flange Diameter (With Seal) (in): 2.875
    • Flange Diameter (Without Seal) (in): 2.652
    • Freight Class: 70
    • Height from Flange to Bottom (in): 1.45
    • Height from Flange to Top of Bridge (in): 1.82
    • Temperature (F): 160 Degrees
  • Heavy Duty thermostat. Made of durable material for a long lasting, trouble free life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Additional Fitment Information:
Vehicle
1981 - Mack RS
Stant
1991 Mack RW Engine Coolant Thermostat - Bypass Stant - Heavy-Duty Thermostat

P311-5B2FE86    14936  New

30346 , 33962 , 3049000 , 504160 , 4055-60

Qty:
103.45
Stant Engine Coolant Thermostat  Bypass
  • Stant Heavy-Duty Thermostat
  • ; Temperature 160 Degrees Seal Included Seal Included
  • Heavy-Duty Thermostat
  • Product Attributes:
    • Bypass Plate Diameter (in): N/a
    • Flange Diameter (With Seal) (in): 2.58
    • Flange Diameter (Without Seal) (in): 2.58
    • Freight Class: 70
    • Height from Flange to Bottom (in): 3.96
    • Height from Flange to Top of Bridge (in): N/a
    • Temperature (F): 160 Degrees
  • Original equipment design. Made of durable material for a long lasting life. Stainless steel assembly engineered for a smooth performance.
Brand: Stant
Position: Bypass
Additional Fitment Information:
Vehicle Position
1991 - Mack RW Bypass

Latest Car Advice

CarJunky AutoAdvice

2000 Honda Civic overheats only with AC on at idle

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From nisbett on 2000 Honda Civic overheats only with AC on at idle

I have a 2000 Honda Civic. It overheats only when the AC is on and the vehicle is not moving. All other conditions, the temperature gauge is at the exact same normal spot. After coming to a stop with the AC on, in about 5 seconds the gauge will rise quickly to the top.

The first time it happened, I added a little antifreeze to the radiator (it was a little low). Since then, the water level is always fine. The radiator electric fan and the AC condensor fan are both on while idling. Are they maybe mutli-speed levels and they aren't kicking up to the higher speed when needed?

The top radiator hose is hot, so the thermostat appears to be open.

I can flush the radiator and change the thermostat. But I would expect if it is just not quite flowing enough that the temperature would be a little high for other conditions as well, and that the extra load of the AC would cause it to run a little hotter than without the AC on, rather than the extreme fluctuation.

Suggestions?

Response From Tom Greenleaf

Flush wouldn't hurt and don't exceed a 50/50 mix of antifreeze and water. See what the flush out stuff looks like. May be time for a new radiator but check as much as you can. DON'T ALLOW OVERHEATING - a tow is lot's cheaper!

T

Response From nickwarner Top Rated Answer

Do you live or drive in an area with a lot of dirt roads and dust? If so I've seen a good spraying through of the radiator and condensor improve things. Most likely not the case and leaning toward DS's theory but worth looking into. I work on a lot of heavy trucks and they pack dirt into everywhere. Had a Mack dumptruck overheating under load and it was packed so bad I had to pull the condensor and CAC off the radiator and clean them all individually. Put it back together and it ran perfect temps with cold AC.

Response From Discretesignals

After coming to a stop with the AC on, in about 5 seconds the gauge will rise quickly to the top. That appears to be more of a gauge/sender issue than actual overheating. Takes a little longer than 5 secs for an engine to overheat.

Be curious to see what the actual coolant temperature is at the computer or by using an inferred thermometer at the sender body.

When the electric coolant fan is running is the air blowing out hot? The upper hose will be hot on a Honda because the thermostat is on the lower hose end. The engine would likely be overheating idling and cruising speeds with a stuck closed T stat.