Borg Warner GM 7.75" 9 Bolt Differential Girdle Cover These Speedmaster Fuel Rails feature

These Speedmaster Fuel Rails feature a larger internal diameter that dampens the pulses and provides increased fuel volume

Manufactured with lightweight aluminum technology

Don't spend hours figuring out which pieces and parts you need to get what you want from your engine

Speedmaster 4340 Billet Steel crankshafts are manufactured from high quality true billet round bar stock

horse power increase of 10-15

Borg Warner GM 7.75" 9 Bolt Differential Girdle Cover These Speedmaster Fuel Rails featureSpeedmaster aluminum differential covers. Made from cast aluminum with thick gasket rails to resist oil leaks, and feature cast in ribs for added strength and heat dissipation. The cover includes mounting bolts for a complete installation.