Copper Seal Header Gaskets Fits 1968-1988 Ford 429-460 Big Block except Boss, CJ & SCJ. Rectangular Ports, 1.25 Inch x 2.08 Inch Mr Gasket Brakes - Brake Drums - Drum Brake Shoe Set Fits 2011-2018 GMC Sierra 3500HD

Fits 2011-2018 GMC Sierra 3500HD Single Rear Wheels

with greater resistance to dust and the harsh off-road conditions

It is up to rider discretion if being used on the street

For Vehicles with 4

They are tested to work with ethanol fuels up to E100

Copper Seal Header Gaskets Fits 1968-1988 Ford 429-460 Big Block except Boss, CJ & SCJ. Rectangular Ports, 1.25 Inch x 2.08 Inch Mr Gasket Brakes - Brake Drums - Drum Brake Shoe Set Fits 2011-2018 GMC Sierra 3500HDMr. Gasket Copper Seal header Gaskets are a high quality copper Gasket that performs extremely well and are reusable. We recommend this in all racing and high performance applications. They are for stock heads unless indicated, and work well in high heat and turbocharged applications. Sold as a pair. Manufactured from Dead Soft (solid) . 043 Inch thick copper material . 051 Inch embossment around each exhaust port to seal irregular surfaces. Total