Chevy Small Block Chrome Steel Exhaust Header Bolt Set

• Matched 6-point socket-head bolts for a clean, secure header-to-flange installation

• 6-point head design gives strong wrench grip on high-torque header bolts

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

• Polished chrome finish for a clean, finished underhood look

Get a clean, secure header installation with this 12-piece set of 6-point 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 6-point head design gives you strong wrench grip for header bolts that see repeated heat cycling and vibration.

Finished in polished chrome for a clean, finished look under the hood, this hardware set is a straightforward way to replace missing, worn, or mismatched header bolts on street and performance builds. Covers classic small block Chevy, Pontiac V8, and Mopar big block platforms.

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 — see full engine and vehicle compatibility below.

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.

What's the difference between this kit and the gold zinc 6-point version?
This kit is finished in polished chrome rather than gold zinc, giving a brighter, more finished look under the hood. Thread size, length, head style, count, and engine fitment are the same across both.

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," while the 383 and 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.

Will the chrome finish hold up to heat near the exhaust headers?
The chrome finish is applied over steel construction. Some discoloration may occur from prolonged exhaust heat exposure over time, which does not necessarily affect the bolt's function.

What tool do I need to install these bolts?
A standard box, open-end, or socket wrench — these are 6-point head bolts, not Allen/socket-head.

Can I use this kit to replace missing header bolts on my Nova or Camaro?
Yes, for compatible small block Chevy applications using a 3/8"-16 thread and the required 3/4" bolt length. If the cylinder head threads are stripped or damaged, they must be repaired before installing replacement bolts.

Do I need to check my header before ordering, even if my engine is listed?
Yes. Header flange thickness and required bolt length can vary by header design, so verify both against this kit's 3/4" thread length before ordering.