Frequently Asked Questions

What exhaust gaskets does Mr. Gasket offer in copper and aluminum for Chevrolet motors?

Mr. Gasket offers CopperSeal exhaust gaskets, which are manufactured from dead soft (solid) .043” thick copper material, with a .051” embossment around each exhaust port to seal irregular surfaces. Total gasket thickness is .094”. These are used for high-performance street, drag race, oval track and turbo-charged (extreme heat) applications and available in various port sizes.

Mr. Gasket also offers Aluminum Layered exhaust gaskets, which are manufactured from dead soft aluminum that is .125” thick and compressed down to .060” to create a tight leak-proof seal. These are used for high performance street, drag race and oval track use.

What’s the compressed thickness on head gaskets from #7100 gasket kits?

What one piece gasket do I need for a Small Block Chevrolet oil pan?

1975-1985: Mr. Gasket #6560 (fits left hand and right hand dipsticks). 1986-97: Mr. Gasket #6561

What grommets do I need to use on Mr. Gasket #9819 and #9847 chrome valve covers?

These are a cap covers that fit over your factory valve cover so no grommets are necessary.

What transmission dipstick will fit a GM 700R4?

Mr. Gasket #9704G will work for most car applications. Mr. Gasket does not have longer dipsticks used in vans.

Can fuel flow through the 12S/42S/12D pumps when they are turned off?

No, the pumps do not hold pressure when off and fuel cannot flow without pressure.

What is the Maximum temperature on the Mr. Gasket “UltraSeal” exhaust gasket material?