Holley Base Gasket - 1.5" Bore Size AS04321 Adjust brake bias from the

Adjust brake bias from the driver seat to compensate for changing track conditions

impact absorbing foam

Includes template

Duration 250 / 258

1979-1986 GMC C1500

Holley Base Gasket - 1.5" Bore Size AS04321 Adjust brake bias from theHolley Base Gasket 108 52 1. 5" Bore Size 1 4" Thickness Includes Studs For Models 2010 2300 Base Gasket Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well.