Holley Base Gasket - 1.5" Primary 91930059 Magnets in this deck plate

Magnets in this deck plate make mounting a dial indicator easier than using a head bolt mounted deck checker

Gasket matched ports with smooth internal geometry to maintain optimal performance and efficiency

offers 300° temperature rating and unsurpassed fluid compatibility

air compressors

Holley Base Gasket - 1.5" Primary 91930059 Magnets in this deck plateHolley Base Gasket 108 25 1. 5" Primary 2" Secondary 1 4" Thickness For Models 4165 4175 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. Holley's