Rear Differential Cover Gasket $40 Help

[diyer2]

$40 for a gasket? $26 from rockauto.

https://www.oreillyauto.com/detail/fel-pro-3607/transmission---transaxle-16780/differential-16805/differential-cover-gasket-11396/differential-cover-gasket/rds55480/4310939/2012/gmc/sierra-1500?fitAttr_10039=Rear&q=differential

 

2012 Sierra 4x4 1500 5.3 10 bolt cover.

 

 

[txab]

And your question is?

 

$4 one works for me. All I've ever used, no leaks. Or RTV alone can be used very successfully.

[diyer2]

Show me a $4 gasket for my truck.

[sdeeter19555]

Don't buy a reusable, that's what you are getting for $40.

 

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[diyer2]

This?

 

Choices from rockauto. http://www.rockauto.com/en/catalog/gmc,2012,sierra+1500,5.3l+v8,1502489,drivetrain,differential+gasket,13411

[txab]

Bolt hole and ring gear determine gasket. What do you have? Always can use RTV also if $26 is your only option for gasket and you don't wanna pay it

[sdeeter19555]

That $26 gasket is reusable.

Are you sure you need one? I thought GM went to reusable rubber-over-steel gaskets?

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[txab]

They did on most truck applications

[diyer2]

Thanks guys.

I looked online before going to an auto store. Confused me. Only 10 bolt gasket was expensive.

It's 25 miles to auto store so I want a new gasket if I need it when I do the diff. fluid. I went into town to get one and the gear lube and they quoted $40 for the gasket and they would have to order it.

I'm with txab, my other older trucks I used the simple Fel Pro $4-$5 gasket. They told me there isn't one for my truck.

RTV silicone is an option, I'd rather have a gasket.

[txab]

Perhaps on your next topic, you'll give more info and good question in your opening post. It will get you an answer much quicker.

[swathdiver]

The gasket is re-usable. Before realizing this, we purchased a Fel-Pro from Amazon for $5.09 and it was delivered in 2 days. Re-used the original and kept this one for a spare. All we did with the original was wipe it down and put it back up, no RTV of any kind.

 

GM has been using that 10-Bolt rear for many decades; they certainly aren't rare.

[diyer2]

The gasket is re-usable. Before realizing this, we purchased a Fel-Pro from Amazon for $5.09 and it was delivered in 2 days. Re-used the original and kept this one for a spare. All we did with the original was wipe it down and put it back up, no RTV of any kind.

 

GM has been using that 10-Bolt rear for many decades; they certainly aren't rare.

Same bolt pattern as my 93 1500 2 wheel?

[swathdiver]

Same bolt pattern as my 93 1500 2 wheel?

 

I don't know about yours but my '09s pattern and cover was the same as my 1980s Buick's. I read that the only change has been an increase in the ring gear size from 8.5 to 8.625.