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Suggested Retail: $526.95
Your Price: $473.95
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Comp Headers

265-400 SB Chevy - 65-70 full-size passenger car, 64-87 Chevelle/El Camino, 70-87 Monte Carlo, 68-79 Chevy II/ Nova, 67-69 Camaro

PART #: 2451-3HKR

UPC #: 700414007229

Emission Control Number 3

This exclusive proprietary black ceramic coating offers the nostalgic look of the past as well as the aggressive look of a modern high–tech build. It also offers a more refined texture and appearance than is possible from painted finishes. With a satin sheen it has a unique look of its own and in addition to providing a more menacing look it also provides all the corrosion resistance of traditional silver ceramic.
The Darkside coating also provides improved thermal resistance as compared to traditional silver ceramic (1700 F vs. 1300 F) making it highly recommended for supercharged or nitrous applications as well as for reduced under–hood temperatures.
Fits 265400 CID Small Block Chevy Engines, 1.6250" Primary Tube, Port Shape: Same As Port, Collector Size 3" O.D.,

Installation Notes
This header is designed to fit multiple vehicle applications. As such, the Collectors exit at two different heights in order to accommodate them all. If you are looking for a header with more available ground clearance, please check out part number 2466HKR or the Super Competition header designed specifically for your vehicle.
Factory style motor mounts must be used to ensure proper engine locations and header fit. Aftermarket solid and urethane mounts, worn or incorrect mounts will cause header fitment issues. If you have floor pan clearance issues on the pass side header, check your sub-frame mounts.
This header will not fit with close ratio steering box or rack conversions. Lowered ride height may result in insufficient ground clearance Check (2466HKR or Super Competition header for your vehicle).
This header was designed around the factory small block engine with factory heads. Raised port heads, D-port heads or non-stock plug locations may cause gasket leaks and header fitment

  • Formulated to withstand extreme temperatures (stability rating is 1700° F vs 1300º F on silver ceramic) without discoloration and maintains excellent adhesion even after repeated thermal cycling
  • Provides a higher heat tolerance threshold than available from silver ceramics (ours or any of our competitor’s) and is therefore recommended for any applications producing elevated exhaust gas temperatures, such as when using superchargers and/or nitrous oxide systems
  • High-efficiency thermal properties limit heat migration through the header assembly, which in turn lowers under-hood temperatures for more performance
  • Increased corrosion protection ensures long service life and maintained appearance of investment
  • Provides unique styling enhancement that is equally pleasing in either a nostalgic retro application or a modern hi-tech build. As this coating is not burnished after its application, the surface appearance is more consistent than that of a silver ceramic coated header. Be different and go black!
  • Header is designed for stock heads with factory straight plugs (4-1/2" plug spacing).

Parts & Kits for 2451-3HKR
16500HKR Dual Exhaust System

Technical Information

Shipping Dimensions
L 45.000 in. x W 18.000 in. x H 9.500 in.
Weight 32.000 lb.
*Free Shipping & Handling only offered to the continental US on orders over $100.

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