# Anti-seize for exhaust fasteners

**URL:** <https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004>\
**Category:** Maintenance/Repairs\
**Created:** [September 4, 2014, 11:06pm UTC](https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004 "2014-09-04T23:06:12Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![JuniorMint](https://avatars.discourse-cdn.com/v4/letter/j/5fc32e/32.png) [@JuniorMint](https://community.cartalk.com/u/JuniorMint)\
**Post date:** [September 4, 2014, 11:06pm UTC](https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004/1 "2014-09-04T23:06:12Z")

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might be obvious, I have been reading about corrosion -

I want to apply some anti-seize to my exhaust fasteners, specifically the bolts/nuts that hold the muffler to the cat… maybe the hanger parts too. Is copper anti-seize best?

e.g:

[http://www.permatex.com/products-2/product-categories/lubricants/specialty-lubricants-anti-seize/permatex--copper-anti-seize-lubricant-detail](http://www.permatex.com/products-2/product-categories/lubricants/specialty-lubricants-anti-seize/permatex--copper-anti-seize-lubricant-detail)

but here’s the reason: because copper will cathodically protect the stainless steel and steel material it is in contact with?

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [September 5, 2014, 12:23am UTC](https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004/2 "2014-09-05T00:23:37Z")

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I use stainless steel bolts & nuts with antiseize. The antiseize prevents galling of the SS (SS bolts & nuts tend to gall) and the SS stays as good as new forever.

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**Author:** ![MY\_2\_CENTS](https://avatars.discourse-cdn.com/v4/letter/m/22d042/32.png) [@MY\_2\_CENTS](https://community.cartalk.com/u/MY_2_CENTS)\
**Post date:** [September 5, 2014, 1:06am UTC](https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004/3 "2014-09-05T01:06:12Z")

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+1 for mountainbike!

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [September 5, 2014, 1:09am UTC](https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004/4 "2014-09-05T01:09:08Z")

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Yes, copper anti-seize. That is the high temp stuff. And Yes (+1) for mountainbike, stainless steel fasteners WITH that copper anti-seize.

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**Author:** ![Yosemite](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/yosemite/32/643_2.png) [@Yosemite](https://community.cartalk.com/u/Yosemite)\
**Post date:** [September 5, 2014, 1:09am UTC](https://community.cartalk.com/t/anti-seize-for-exhaust-fasteners/87004/5 "2014-09-05T01:09:11Z")

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You beat me to it TSM, I too use Stainless for the exhaust…especially if I think I may need to remove them in the car’s life time. For the extra $1 a bolt it’s worth the effort.

Yosemite