Holley Base Gasket - 1.5" Bore Size AS04321 Duration 250 / 258

Duration 250 / 258

Pro Stick Aluminum Cover

This little Top Marker round shaped beauty features a flat dish and is not drilled so you can drill any bolt pattern on it you like

1-1/4 in Hose Barb

Includes template

Holley Base Gasket - 1.5" Bore Size AS04321 Duration 250 / 258Holley 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.