Chevy Small Block Gold Zinc Steel Allen Head Exhaust Header Bolt Set

• Matched Allen socket-head bolts for a clean, secure header-to-flange installation

• Allen/socket-head design allows clearance in tight header bolt patterns

• 12-piece set fits 3/8"-16 bolt patterns on Chevy, Pontiac & Mopar V8 builds

• Gold zinc finish resists corrosion on street and performance engines

Get a clean, secure header installation with this 12-piece set of Allen socket-head bolts, sized to fit 3/8"-16 header bolt patterns common on Chevy Small Block, Pontiac V8, and Mopar big block exhaust header applications. The socket-head design gives you clearance for a hex key in tight header bolt locations where standard hex-head bolts can be difficult to access.

Finished in gold zinc for corrosion resistance in the header area, this hardware set is a straightforward way to replace missing, worn, or mismatched header bolts on street and performance small block builds.

Always verify header flange thickness and required bolt length before ordering — not all headers use the same bolt size, and fitment depends on matching the correct thread size and length to your specific header.

Applications
Designed for exhaust headers using 3/8"-16 bolt threads. Covers Chevrolet Small Block V8 (Gen I and Gen II LT-based), Chrysler Big Block "B" and "RB," GM 90° V6, and Pontiac V8 platforms.

Installation
Confirm your header's flange thickness and required bolt length before installation — header bolt length requirements vary by header design and engine setup, so verify thread size and length against your specific header rather than assuming universal fit.

Will these bolts fit a small block Chevy 350?
Yes. The 5.7L/350 in³ is covered under both Gen I (carbureted small block) and Gen II LT-based platforms (LT1, LT4).

What's the difference between the Gen I and Gen II small block Chevy this kit covers?
Gen I covers the classic carbureted small block range (262 through 400 in³), while Gen II is the LT-based small block (LT1, LT4), sharing the same 5.7L/350 in³ displacement with a revised architecture.

Does this kit work on a Pontiac 400 or 455?
Yes. Both are covered under the Pontiac V8 platform, along with 301, 326, 350, 389, 421, and 428 in³ variants.

Will this fit a Mopar 440 big block?
Yes. The 440 falls under Chrysler Big Block "RB," and the 383/400 fall under Chrysler Big Block "B" — both use this bolt set's 3/8"-16 thread pattern.

Does this kit fit a GM 90-degree V6?
Yes, for the 3.3L/200, 3.8L/229, and 4.3L/262 in³ GM 90° V6 engines.

What tool do I need to install these bolts?
These are Allen/socket-head bolts, so you'll need a hex key or Allen socket sized to the bolt head rather than a standard wrench.

Can I use this kit to replace stripped or missing header bolts on my Nova or Camaro?
Yes, for small block Chevy applications in Nova, Camaro, Chevelle, Corvette, and C/K trucks — the 3/8"-16 thread and 3/4" length match this bolt set.

Do I need to check my header before ordering, even if my engine is listed?
Yes. Engine compatibility confirms your engine uses this bolt pattern, but header flange thickness and required bolt length still vary by header design — verify both against this kit's 3/4" thread length before ordering.