Hooker Competition Headers - 1.75 in Primary - 3 in Collector - Black Paint - Big Block Chevy - GM Fullsize SUV / Truck / Van 1968-95 - Pair Mobile Radios & Components Intake and exhaust rockers are

Intake and exhaust rockers are joined in pairs on a shaft that is 22% larger and engineered for extreme RPM

5oz (354grams) Outside Diameter: 39mm OD External Materials: Black plated steel with laser etching Inlet Fitting: 7

1989-1995 BMW 525i

Ford Fullsize Truck 2009-11

Rubber Isolator

Hooker Competition Headers - 1.75 in Primary - 3 in Collector - Black Paint - Big Block Chevy - GM Fullsize SUV / Truck / Van 1968-95 - Pair Mobile Radios & Components Intake and exhaust rockers areHooker Headers Competition Header 2454HKR Black Finish Tube Size 1. 75 x 30 in. OD Collector Size 3 in. OD Collector Length 8 in. Port Shape Same As Port High Performance Affordable Durable 16 Gauge Material Welds Easier Lasts Longer Heat Cured High Heat Resistant Vehicle Applications: 1973 1973 Chevrolet Blazer 1968 1974 GMC C15 C1500 Pickup 1979 1986 GMC C3500 1989 1989 Chevrolet R3500 1987 1988 Chevrolet R30 1975 1978 GMC C25 Suburban 1975 1978 GMC