March Performance Ford Crank Pulley Spacer 1431 1970-gmc-g15-g1500-van-esi8988855 BORLA®'S patented SwitchFire® design truly

BORLA®'S patented SwitchFire® design truly blends the combustion pulses from both sides of the engine for improved performance and a custom aggressive sound

5" lifted front

Has a 14 x 2 inch open paper filter element with wire mesh surround

1987-1991 Ford E-150 Econoline Custom 1983-1996 Ford E-150 Econoline XL 1980-1982

Mounting Hardware Are Made of Corrosion Resistant Stainless Steel

March Performance Ford Crank Pulley Spacer 1431 1970-gmc-g15-g1500-van-esi8988855 BORLA®'S patented SwitchFire® design trulyCrankshaft Pulley Spacer 0. 614 in Thick Aluminum Polished 4 Bolt Balancer Small Block Ford Each March Performance Ford Crank Pulley Spacer 1431