Fits Holley 4150 square bore carburetor's. We tried "Super" 1" versions from different manufactures including the clones. There spacers are not tall enough and the design is poor. Made for marketing purposes.
Holley 4500 dominator carburetor spacer Ultra High flow 2" carbon fiber PC USA
13113 Universal Ultra High Flow Belt Drive Pump EFI Regulator 40-100 PSI
For 13113 Universal Ultra High Flow Belt Drive Pump EFI Regulator
for Ford 6.0L 6.4L F250/350 Diesel Fuel Banjo Bolt Ultra High Flow Upgrade Kit
