16-Piece Header Bolt Set for Big Block & Performance V8 Engines
Secure your exhaust headers with this 16-Piece Header Bolt Set, designed for compatible Big Block and performance V8 applications requiring 16 mounting bolts. Made from heat-treated 42CrMo alloy steel to Grade 8 specifications, these bolts provide dependable clamping strength for high-heat, high-vibration exhaust systems.
The compact 5/16" hex heads improve tool access around header tubes and in tight engine bays. Each bolt features an integrated flange that eliminates the need for separate washers while helping distribute clamping force across the header flange. A black phosphate and blackened finish provides added corrosion resistance and a clean, low-profile appearance.
Key Features
- Complete 16-piece exhaust header bolt set
- Heat-treated 42CrMo alloy steel construction
- Grade 8 specifications
- Compact 5/16" hex heads for easier installation
- Integrated flange design eliminates separate washers
- Black phosphate and blackened corrosion-resistant finish
- Designed for reliable header clamping and gasket sealing
- Ideal for muscle cars, restorations, street rods, and performance builds
Engine Compatibility
Designed for compatible applications requiring 16 header bolts, including:
- Big Block Chevy: 396, 402, 427, 454
- Ford Small Block: 260, 289, 302, 351W, 351C
- Ford FE Series: 390, 428
- Mopar B/RB Series: 383, 400, 413, 426, 440
Important: Compatibility depends on the specific header and engine configuration. Small Block Chevy applications typically requiring 12 bolts should use the corresponding 12-piece kit. Verify bolt thread, length, and fitment before ordering.
Specifications
- Quantity: 16 Bolts
- Material: Heat-Treated 42CrMo Alloy Steel
- Strength Specification: Grade 8
- Hex Head Size: 5/16"
- Design: Integrated Flange
- Finish: Black Phosphate/Blackened Coating
- Application: Compatible Big Block and Performance V8 Headers
Installation Recommendations
Use anti-seize lubricant and follow the header manufacturer's torque specifications. The suggested range of 25–30 ft-lbs should be confirmed for your specific application before installation. Recheck fasteners after the initial heat cycle when appropriate.
Frequently Asked Questions
How many bolts are included?
This kit includes 16 header bolts.
Which engines can use this kit?
It is intended for compatible Chevy, Ford, and Mopar V8 applications requiring 16 header bolts. Confirm your exact header specifications before ordering.
Do the bolts require separate washers?
No. The integrated flange design eliminates the need for separate washers.
Are these bolts suitable for tight engine bays?
Yes. The compact 5/16" hex heads help improve tool access around header tubes.
Can I use this kit for a Small Block Chevy engine?
Most Small Block Chevy applications use 12 header bolts. Check your specific setup and choose the appropriate kit.
Need help confirming compatibility? Contact us with your engine details and header specifications before ordering.
