Hedman Street Headers - 79-93 Mustang / 83-88 Thunderbird 4386XXLBK With a patented orifice metering

With a patented orifice metering valve and a lightweight check valve disc these High Energy hydraulic flat lifters for Chevrolet Small/Big Block/348-409 provides quicker response and better performance

These cylinder heads are sold in pairsSince 1938

216/220 Duration

Chevy A-Body / B-Body 1958-64

2009-2010 Ford F-250 Super Duty

Hedman Street Headers - 79-93 Mustang / 83-88 Thunderbird 4386XXLBK With a patented orifice meteringHedman Hedders Standard Uncoated Headers; 1 1 2" Tube Diameter; 3" Collector; Full Length Design Hedman's Standard duty, Uncoated Hedders are manufactured using 18 gauge, mandrel bent primary tubes (some models built using thicker 16 or 14 gauge tubing), and 1 4 flanges (some models use 3 8" flanges). Hedman Hedders has been manufacturing quality headers and exhaust components in the USA since 1954. Hedman Hedders Standard Uncoated Headers 1 1 2" Tube