Hedman Elite Ultra-Duty Headers - 1.75 in Primary - 3 in Collector - Metallic Ceramic - Big Block Chevy - GM Fullsize SUV / Truck 1967-91 - Pair 20163 Precision machined aluminum castings

Precision machined aluminum castings

Sound Barrier Materials

commonly used when qualifying or when track conditions allow for more power

Features an Pyrovatex ® FRC Cover with Hook and Loop Closure

Drill chip evacuation port

Hedman Elite Ultra-Duty Headers - 1.75 in Primary - 3 in Collector - Metallic Ceramic - Big Block Chevy - GM Fullsize SUV / Truck 1967-91 - Pair 20163 Precision machined aluminum castingsHedman Hedders Elite Headers; 1 3 4" Tube Diameter; 3" Collector; Full Length Design Hedman Hedders Elite Hedders Exhaust Header 69820 Tube Size 1. 75 in. Collector Size 3 in. Tubular Exhaust Manifold System Square Port w o Smog Injection Injection Header Ultra Duty 14 Gauge Primary Tubes Ceramic Metallic Coating Stands Temp. Up To 1400 F Durable 3 8 in. Flanges Prevent Warping And Stands Up Better Against Brutal Punishment Durable And Affordable