Holley Base Gasket 1.75 " Bore Size .3125 " Thickness Fits Holley 4160/4150 and Four Barrel TBI Flange Pattern 61-61 PLUS Mopar B / RB-Series

Mopar B / RB-Series

FW XE258HR-12

375 in thick

343 12-bolt flange

Rotator Eliminators

Holley Base Gasket 1.75 " Bore Size .3125 " Thickness Fits Holley 4160/4150 and Four Barrel TBI Flange Pattern 61-61 PLUS Mopar B / RB-SeriesBase Gasket 1. 75 " Bore Size . 3125 " Thickness Fits Holley 4160 4150 and four barrel TBI flange pattern. 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.