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Hedman Performance Parts
Hedman 66117
Hedman 66117 HTC Coated Hedders - Full 450x337
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Hedman 66117
• 18 gauge mandrel bent primary tubes
• ¼" flanges to resist warpage
• Hedman has designed the 66117 for a perfect fit
• Includes hardware and gaskets
• Durable aerospace coating insulates and protects from corrosion
• Keeps heat inside header tubes where it belongs
• Backed by a lifetime warranty
• Proud to say made in the USA since 1954

50 state smog legal for 1975 and later
Our Price: $569.95
UPC 732611661171
Free Shipping and Handling for orders over $99!
(US only. Excluding any oversize charges.)
Enter Zip Code to Calculate Estimated Delivery Date
1Estimated Shipping Dates are based on available inventory and the nearest warehouse.
Performance Parts is a Hedman authorized performance retailer
Product Info Related Items
Hedman 66117 HTC Coated Exhaust Headers
Fits 1968-1981, Chevrolet and GMC pick-ups with 396-502 cu.in. big block V8

Hedman standard duty 66117 headers for Chevy and GMC pick-ups are available from the factory with Hedman's own exclusive "HTC" Ceramic-Metallic thermal protection coating. This is an extremely durable coating that was developed by the aerospace industry and pioneered for use in automotive applications by the engineers at Hedman Hedders. It greatly improves not only the lifespan of your Hedman headers but also their function. It resists corrosion from moisture, road salts, and oxidation, and shields against heat up to 1,400 degrees! This helps to keep the exhaust heat inside the headers where it belongs, which not only speeds up the flow but protects underhood components from damage due to excessive heat.

Hedman's 66117 header is superior to your factory cast iron exhaust manifold, with its short cramped design that restricts exhaust flow. Your Hedman Hedders feature smoothly bent individual pipes that help to pull the exhaust gases out of each cylinder. Hedman's 66117 exhaust header has been designed specifically for your GM truck and will fit and perform better than any other exhaust header you can buy.


Tube diameter: 1-3/4"
Collector: 3"
Full length headers
Must use 1975 and later model clutch linkage located at rear of engine
Shipping Weight/Dimensions:
Weight:32.00 lbs
Height:8.00 in.
Length:39.00 in.
Width:16.50 in.
Shipping from warehouses in the U.S. and Canada!
Performance Parts has over 20 warehouses in the U.S. and Canada so you can get your parts duty free! Call for availability.
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- Last Updated: 2016-01-07 15:19:59 -
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