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Mr. Gasket 7177MRG Copper Seal Triangle Collector and Header Muffler Gasket

Free shipping on orders over $29.99

$16.44

$ 6 .99 $6.99

In Stock

About this item

  • Prevents exhaust leakage between the header and collector flanges
  • Bolt diameter is 3 inch, bolt circle 3-7/8 and bolt hole 3/8
  • Triangle gasket with 3 bolt hole gasket
  • Conforms to and seals minor surface irregularities


The Mr. Gasket Copper Seal Collector and Header Muffler Gaskets are designed to prevent exhaust leakage between header and collector flanges. Copper seal gaskets are made from dead soft (solid) copper material that is very durable and conforms to flange surface irregularities for outstanding sealing and are reusable. Conform to the flange for a superior seal.


Ruth Roe
Reviewed in the United States on August 21, 2022
No leaks
Jill Ambrose
Reviewed in the United States on June 8, 2015
Just a heads up! You only get 1 gasket when you order this. It appears that you would get a set, but this is not the case. The gasket itself is Made in China, but it appears to be OK. There are MADE in USA gaskets available as a pair, for less money - just do a little digging.
C. Cocklin
Reviewed in the United States on March 31, 2012
picture shows 2, I received 1 for 11.00, could have gotten both for 10.00 local. my mistake I will check autozone first next time.
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