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#4445479 - 06/29/17 10:25 PM OEM gasket and seals or aftermarket?
Nissan101 Offline


Registered: 08/13/15
Posts: 415
Loc: Caribbean
Goodnight, my valve cover gasket needs changing as it has developed a weeping leak.
An aftermarket gasket seal would cost me $65 while an original nissan gasket is costing me $175. Is it worth paying the $110 more for the oem seal?
Engine is a QG18DE
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#4445498 - 06/29/17 10:48 PM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
E150GT Offline


Registered: 03/11/12
Posts: 1096
Loc: San Antonio, TX
Can you use permatex the right stuff ? That might work instead of a gasket.
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#4445503 - 06/29/17 10:53 PM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
andyd Offline


Registered: 09/25/04
Posts: 7145
Loc: Marshfield , MA
If it is just a weep, carefully check the screws for tightness. Who makes the aftermkt gasket? If you get a new VC gasket,does it come with spark plug seals?
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#4445504 - 06/29/17 10:53 PM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
FlyNavyP3 Offline


Registered: 07/04/16
Posts: 1407
Loc: Jacksonville, FL
If Fel-Pro makes a gasket for it I'd gladly use that over a more expensive OE gasket. I've installed hundreds and hundreds of their gaskets in repair jobs over the years and several hundred more in rebuilt and race engines over the years. They make a really nice service part. Use with confidence.
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#4445594 - 06/30/17 01:52 AM Re: OEM gasket and seals or aftermarket? [Re: andyd]
Oro_O Offline


Registered: 09/20/14
Posts: 1351
Loc: Seattle-ish, WA
Originally Posted By: andyd
If it is just a weep, carefully check the screws for tightness. Who makes the aftermkt gasket? If you get a new VC gasket,does it come with spark plug seals?


First thing to do. They shrink a bit over time from heat cycling and hardening. Sometimes re-torquing will take care of it.

If not, when you do install it, I suggest using gasket dressing. Then tighten them all finger tight before torquing in proper sequence. Then let it set overnight if you can time it, and re-torque the nex day. The gasket will take an initial set and the torque needs to be checked a few times in short order to get a good seal and make a proper repair job. And don't ignore the plug seals as already noted. If not leaking, they will before long if the main gasket is gone.

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#4445626 - 06/30/17 05:41 AM Re: OEM gasket and seals or aftermarket? [Re: FlyNavyP3]
nwjones18 Offline


Registered: 11/30/09
Posts: 1052
Loc: Warner Robins, GA
Originally Posted By: FlyNavyP3
If Fel-Pro makes a gasket for it I'd gladly use that over a more expensive OE gasket. I've installed hundreds and hundreds of their gaskets in repair jobs over the years and several hundred more in rebuilt and race engines over the years. They make a really nice service part. Use with confidence.


+1 Fel-Pro makes good stuff.
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#4445716 - 06/30/17 08:15 AM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
WillsYoda Offline


Registered: 10/17/15
Posts: 471
Loc: MN
I've used FelPro for valve cover gaskets to good effect. Some things do not need OEM. This is one of them.

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#4446093 - 06/30/17 04:27 PM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
slacktide_bitog Online   content


Registered: 03/20/08
Posts: 6156
Loc: USA
Fel-Pro, Victor Reinz, and Beck/Arnley are good brands. Sometimes they are reboxed OEM.

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#4446095 - 06/30/17 04:28 PM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
Trav Offline


Registered: 11/20/06
Posts: 18873
Loc: MA, Mittelfranken.de
+ On Fel-Pro. There is a good chance you will find a OE manufacturer produced gasket (not OE branded) in the box for Asian or Euro cars.

Slacktide had the same thought


Edited by Trav (06/30/17 04:29 PM)
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#4446253 - 06/30/17 08:26 PM Re: OEM gasket and seals or aftermarket? [Re: Nissan101]
FlyNavyP3 Offline


Registered: 07/04/16
Posts: 1407
Loc: Jacksonville, FL
Fel-Pro and Victor both supply OEM manufacturing for new engine production. So is it an OE gasket in a aftermarket box or a Tier one supplier part in an OE application. Chicken or the egg I suppose.
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P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander

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