This Cometic Twin Cam base gasket set (two-pack) is a .020 inch rocker-cover-style gasket for 4.310 inch bore applications and is engineered to require less clamp load. The gasket design conforms load distribution across the sealing area to create less bore distortion and generally does not require sealants or re-torquing, simplifying installation and long-term sealing performance.
Cometic 4 1/8in Twin Cam Sundance .020inRc 4.310in Bore, 2 Pk Base