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Hedman 66451 - Hedman HTC Hi-Tech Coated Headers

Hedman 66451 - Hedman HTC Hi-Tech Coated Headers

JEGS Part Number: 500-66451

Standard Duty HTC Coated Full-Length Headers
  • 1988-95 GM C2500/C3500 454
  • 1-3/4" Tube, 3" Collector

    Hedman 66451 - Hedman HTC Hi-Tech Coated Headers Details

    GM Trucks

  • With A.I.R. system
  • Late model chassis, engine offset to passenger side
  • Due to cylinder heads (aluminum), Generation 6 BB-Chevy 502 will have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.
  • Designed for use with Trans-Dapt throttle body spacer
  • Not legal for sale or use in California
  • Modification to stock exhaust required to retain catalytic converter
  • Not applicable or intended for street or highway use (legal only for racing vehicles which may never be used on a highway)

  • These standard-duty Hedman HTC Coated Headers come from the factory with an extremely durable, protective ceramic-metallic coating. Hedman Hedders pioneered the automotive application of ceramic-metallic coatings in the early 1980s. Previously exclusive to the aerospace industry, Hedman Hedders recognized the coating's potential to improve both the lifespan and functionality of exhaust headers. All Hedman street headers are MADE IN THE USA and backed by a lifetime warranty against manufacturing defects! The HTC coating is covered for a full five years.

    NOTE: Installing coated headers on an engine during the break-in period will cause discoloration. The use of factory manifolds or an old set of headers is recommended while breaking in an engine.

  • Coating offers protection up to 1400°
  • Won't chip, peel, or "blue" like chrome
  • Superior heat insulation
  • Increased exhaust velocity for more power
  • Made in USA

    JEGS Easy Kits are designed by JEGS Professionals to help you get all the performance parts you need.

  • Hedman 500-66451

    Tube Size
    Collector Tube Size (in.)
    Tube Direction
    Down Swept
    Metallic Ceramic
    Port Shape
    Engine Make/Size
    Chevy 7.4L (Vortec)
    Manufacturer's Part Number:
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