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We also have Valve Cover Gasket parts for other Oldsmobile models, including Achieva, Alero, Aurora, Bravada, Calais, Custom Cruiser, Cutlass, Cutlass Calais, Cutlass Ciera, Cutlass Cruiser, Cutlass Supreme, Delta 88, F85, Firenza, Intrigue, LSS, Omega, Regency, Silhouette, Toronado, 88, 98.

Victor Gaskets
1991 Oldsmobile Cutlass Calais Engine Valve Cover Gasket 6 Cyl 3.3L Victor Gaskets

P311-361DE31    VS50123  New

VS 50320 R , VS999

In Stock & Ready to Ship
Victor Gaskets Engine Valve Cover Gasket
  • Engine Valve Cover Gasket
  • ; Single Valve Cover Valve Cover Grommets not Included Molded Rubber
  • Product Attributes:
    • Material: Molded Rubber
    • PCV Valve Grommet Included: No
    • Thickness:
      • 0.33
      • 8.30
    • Valve Cover Gasket Material: Molded Rubber
  • MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Victor Gaskets
Additional Fitment Information:
Vehicle Block Engine CID CC
1991 - Oldsmobile Cutlass Calais V 6 Cyl 3.3L 204 -
1990 Oldsmobile Cutlass Calais Engine Valve Cover Gasket ACDelco

P311-45BEF90    W0133-1682284  New

In Stock & Ready to Ship
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle Engine VIN
1990 - Oldsmobile Cutlass Calais U
1990 Oldsmobile Cutlass Calais Engine Valve Cover Gasket ACDelco

P311-184334F    W0133-1682633  New

In Stock & Ready to Ship
ACDelco Engine Valve Cover Gasket
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle Engine VIN
1990 - Oldsmobile Cutlass Calais N
1991 Oldsmobile Cutlass Calais Engine Valve Cover Gasket Genuine

P311-34FFD3B    W0133-1682633  New

In Stock & Ready to Ship
Genuine Engine Valve Cover Gasket
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
Brand: Genuine
Additional Fitment Information:
Vehicle Engine VIN
1991 - Oldsmobile Cutlass Calais N

Latest Car Advice

CarJunky AutoAdvice


Showing 3 out of 5 Posts | Show 2 Hidden Posts
Question From kbbayliss on 2001 BMW X5 VALVE COVER GASKET HELP!!!!

What is the average replacement mileage for the valve cover gaskets on the X5???? My "Mechanic" is telling me that after 43000 miles.... i need to do this for $546.00 any help!?!?!?!?!?

Response From DanD Top Rated Answer

Does he want to do this as a maintenance service or is the valve cover leaking oil? I haven’t heard of a valve cover gasket being a maintenance item before. Replace it if it’s leaking is what I’ve always been taught; regardless of mileage.
Check with the dealerships service department; there maybe some theory behind having it replaced; what I can’t think of though?
At first I thought maybe replacing the gasket was during the course of a valve adjustment, but after looking through the little service info I have; these engines have hydraulic lifters and adjustment is not required.

Response From kbbayliss

Thanks Dan,

This is the story.... Last week I took it in because the oil light was yellow.... (an indication of low oil). I also had a few other things done, headlight, tail light, replaced window motor on front driver side window. They said the car was fine and just needed to be topped off with oil. Ok, fine. one week later, the light is on again. hmmmm. I take it back and now there is a mysterious leak and the valve cover gasket needs replacing. in addition the guy calls me today and says now he wants to check to see if the sensor is faulty... wouldn't that be the first step? Now, there is NO oil on the ground where I park everyday.... so - 1. Why did they not see this last week while topping off oil?2. why would they release the car as fine. 3. if the gaskets are so destroyed as they say... how could this happen in a week? and 4. why haven't I smelled oil or seen any traces anywhere? Thanks again for your help


Response From DanD

I’m not sure what to say about any of this; I do feel you are having doubts with the reliability of the repair center you are using. Whether caused by lack of communications between parties involved or a misunderstanding of repairs supplied and received; again I’m not sure of.
I suggest thanking the shop you’re dealing with, paying them for their services and then getting a second opinion.
That way if or when you find that they where doing their best; there are no hard feelings and you can continue to do business with them.
If by chance they are trying to do you; you’ve left there before any confrontations and you can chalk it up to experience.
Always keep the lines of communication open with whomever you’re dealing with and things most times work out.
I’ve been the trade of repairing vehicles for a lot of years now and the worst confrontations I’ve had was from people (including myself) not willing to listen to the other side.
I know there isn’t a lot of automotive repair advice in this post but I’m not sure what else to say; without of a lot more first hand info.

Response From Tom Greenleaf

Did I see 43K on a 2001 Beamer? Valve cover gaskets needed? How much money?

I don't like the sound of this especially since you don't find oil but it does use some. Check it by dipstick for now and I wouldn't wait for the light, Good luck and you should as Dad said get another opinion. There are shops oustide BMW that are good with these cars, T

96 Toyota Corolla Semi-Circular Plug Missing?

Showing 9 out of 12 Posts | Show 3 Hidden Posts
Question From rabbitrun on 96 Toyota Corolla Semi-Circular Plug Missing?

On Friday mechanic installed new spark plug tube seals & valve cover gasket set on 96 Toyota Corolla DX 1.8 L engine with 161,000 miles to fix problem of oil getting past the tube seals. I got home & found the semi-circular plug sitting on top of the battery. Based on price of parts ($59), number (JVS-10344), & name of part (Valve Cover Gasket), I would guess mechanic bought a valve cover gasket set without a new semi-circular plug.

Can I see if a semi-circular plug is installed on the vehicle without removing the valve cover? Or does shop have to remove valve cover gasket to check if the semi-circular plug is installed?

Do any of the following new parts need to be replaced if the valve cover is opened back up? Valve cover gasket, spark plug tube seals, grommets?

What happens if the semi-circular plug is not replaced? Is it ok to drive the vehicle back to the shop or will I end up with oil all over the belts, etc?


Response From Discretesignals Top Rated Answer

You won't be able to tell if the plug is missing unless you remove the valve cover. I don't think that you shouldn't drive it until you know that plug has been installed. If it hasn't and you got oil all over the timing belt, your mechanic owes you a timing belt. You really need to call your mechanic in the morning and explain to him/her what is going on.

Response From Tom Greenleaf

?? What do you mean by "semi-circular?" Is that possibly an old one cut to remove and replace with new? You may never know without doing this all over again.

Just FYI gasket set shows like this for this car........
I don't see any sem-circular gasketing if that pic is correct,


Response From Discretesignals

Tom it looks something like this:

It goes in the head before you install the valve cover. It covers the hole where the intake camshaft is. If you don't install it, oil can leak into the area of the timing belt. Most of the time they don't come with the valve cover gasket kit. You remove it, clean it up, and then put a bead of gasket sealant on the bottom side and put it back in.

Response From rabbitrun

Hi Tom & Discretesignals: the semi-circular plug they left on top of my battery looks different than your image. It is metal, has threads or ridges on the rounded side, smooth on the half moon side, & a metal protrusion on the top. Trying to attach a picture but can't. Are we talking about the same part? The local mechanic said it's just under the valve cover gasket in a half moon area on top of the cylinder head. Is it on the same side as the timing belt on a 96 Toyota Corolla DX 1.8 L?

Would the plug have come out while he was changing the valve cover gasket? I thought those plugs were really anchored in there.

Response From Discretesignals

The one I posted above isn't an exact one that you have. The one you described is definitely supposed to be on the head. Did you call the shop?

They won't come out when installed properly.

Response From rabbitrun

Thank you all for your responses! I really appreciate your help. I think this problem is resolved---let me know if you see it differently (like if oil could leak over timing belt later on rather than immediately if semi-circular plug was not put back in the engine just under the valve cover gasket):

Manager looked at the semi-circular plug mechanic left on the battery, & told me it was the old plug & the mechanic installed a new plug . I asked the shop manager how they knew if a semi-circular plug was put back in the engine without opening up the valve cover or without asking the mechanic if he put the plug back in? Manager told me there would be oil spewing all over if the plug had not been put back in.

Response From Tom Greenleaf

A bit lost but all is credible that it is the OLD plug and that you would know something is wrong quickly if it was missing. Keep that plug and your paperwork anyway. Watch for any oil lights or drips - anything not right.

What you don't want and DS mentioned this would/could put oil over timing belt (rubber) and that would be a real problem even if somehow oil could leak back into engine without obvious evidence it would fail and that would be trouble.

You've done your part asking and checking. Does the one you have seem used at all by your call? Might be hard to know for sure.

Stuff happens and this probably is harmless but keep an eye out for anything out of the ordinary,
Couldn't find a picture of the parts included by the # you listed as to what it contained. If you do find it didn't come with a new one then I'd really pursue finding out more,


Response From rabbitrun

Tom Greenleaf & Discretesignals: THANK YOU SO MUCH FOR YOUR RESPONSES. I really appreciate it!

I called Worldpac & asked what was in their valve cover gasket set (part #JVS-10344) cause I can't view the parts online at since they are a wholesaler. The Worldpac rep pulled out Ishino Stone valve cover set JVS-10344 & told me it contained the valve cover gasket, 4 grommets, spark plug tube seals & a half moon shaped metal piece with an appendage in the middle.----what he described sounded similar to the part the mechanic left on top of my battery (plug on battery was oily with older engine oil on it---it could have been like that because the mechanic handled it with oily hands while he was working on vehicle or because he removed it from the vehicle).----I thought those plugs were usually in solid & tight when installed by factory & hard to remove---is that not the case? In any case, according to Worldpac rep the valve cover set comes with a plug.

When I showed the plug to the shop manager yesterday he told me it was the older plug that was removed from the vehicle. He said it was the older plug based on the way the coating looked on the round side of plug .-----does that sound about right to you?

If the plug was not put back in the vehicle, could it have a delayed response in spewing oil on the timing belt or leaking oil back into the engine & fail the engine?

The OEM Toyota part number for the semicircular plug or "half moon" plug is: #11183-15020.


96 Corolla DX, 1.8 L, approx. 161,000 miles

Response From Tom Greenleaf

Let DS say his thing as he knew this exact set up better than I did. I'd say that since the manager looked at the plug you found and declared it a used one you are covered and it was just set where you found it and missed when cleaning up/ finishing up the job. Hey done with this stuff long time now but used to scan where I put anything so can relate to it - a part like that and all tools used accounted for.

IDK how to be any surer than you are now and manager would have freaked if he really thought it was likely missing would have it done all over or I would if that manager and there was doubt.

Cross fingers and call it all done but still keep an eye out for anything as you should anyway. Sorry it was this much of a hassle for you,


Response From Tom Greenleaf

Excellent as usual DS. If one found as mentioned I guess this has to come apart to verify it is all proper. Eeek, if oil already in all the wrong places add that to this fix too. This is a gotta know for sure thing IMO,


Response From rabbitrun

Where else could that oil go if the semi-circular plug is not installed? just want to find out what else could be messed up. i dont see oil on the timing belt (yet).

how can i paste the image here of the plug that was sitting on top of the battery?