Cometic 4.540" Bore Head Gasket 0.030" Thickness Multi-Layered Steel BB Chevy Window & Cage Nets 4R70W #40504 and E40D &

4R70W #40504 and E40D & 4R100 will require optional kit #40505

Includes compression fitting for 3/16" steel brake line

Uses Latch & Link to Secure Top Bar

For 3-3/4" And 5" Pedestal Tachs

Cometic 4.540" Bore Head Gasket 0.030" Thickness Multi-Layered Steel BB Chevy Window & Cage Nets 4R70W #40504 and E40D &Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 030". Cometic MLS (Multi Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two