Mr. Gasket Ultra-Seal Valve Cover Gaskets - Cork, Rubber w/ Steel Core - SB Chevy - Center Bolt 9510D These valve covers come ready

These valve covers come ready for installation with an OE style baffle and ventilation system

All the parts you need for a complete rebuild on your Holley carb

Dry Boiling Point: 312C/594F

Plenum gasket

Does not fit with Powerglide transmission

Mr. Gasket Ultra-Seal Valve Cover Gaskets - Cork, Rubber w/ Steel Core - SB Chevy - Center Bolt 9510D These valve covers come readyUltra Seal' Ultra 20 material swells to a controlled thickness for a tight seal. It will not contract or need re torquing. a black latex coating helps create a tight seal and assures easy removal. High tensile strength improves performance. Fits 1987 96 305 350 TPI & 1992 96 350 LT1 with center hold down valve covers. Vehicle Applications: 1989 1991 Chevrolet V3500 1987 1987 Chevrolet V10 1992 1995 GMC C2500 Suburban 1987 1994 Chevrolet Blazer 1992