Stage 8 Header Bolt Kit 12pt 3/8-16 x 1in Locking Fasteners — Fits GM V6 / Small Block Chevy

SKU: BJHT_8931

About Stage 8 Stage 8 engineers high-quality automotive parts and ...Read more

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Stage 8

Stage 8 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Stage 8 lineup with fast shipping and expert fitment support — order with confidence.

Professional Grade Locking Hardware

Upgrade your Small Block Chevy or GM V6 exhaust system with the Stage 8 Header Bolt Kit. Featuring a 12-point head design, these bolts are not only easier to access in tight engine bays but also provide a sleek, professional look. More importantly, they utilize Stage 8’s proven locking technology to ensure your headers remain perfectly sealed against the cylinder head.

Technical Details

  • Thread Size: 3/8-16
  • Length: 1 inch
  • Head Style: 12-Point
  • Material: Nickel-Plated Steel
  • Quantity: 12-Piece Set

The 12-point head allows for better wrench engagement in confined spaces, making installation a breeze compared to standard hex heads. Once installed, the locking bridge and clip system prevent the bolts from ever backing out. This is critical for high-output engines where heat expansion is significant. By preventing leaks, you ensure optimal exhaust scavenging and maintain peak horsepower. Whether you are building a classic muscle car or a modern performance machine, these bolts offer the peace of mind you need. Find all your essential engine fasteners at GGCRACING.

About Stage 8

Stage 8 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Stage 8 lineup with fast shipping and expert fitment support — order with confidence.

Professional Grade Locking Hardware

Upgrade your Small Block Chevy or GM V6 exhaust system with the Stage 8 Header Bolt Kit. Featuring a 12-point head design, these bolts are not only easier to access in tight engine bays but also provide a sleek, professional look. More importantly, they utilize Stage 8’s proven locking technology to ensure your headers remain perfectly sealed against the cylinder head.

Technical Details

  • Thread Size: 3/8-16
  • Length: 1 inch
  • Head Style: 12-Point
  • Material: Nickel-Plated Steel
  • Quantity: 12-Piece Set

The 12-point head allows for better wrench engagement in confined spaces, making installation a breeze compared to standard hex heads. Once installed, the locking bridge and clip system prevent the bolts from ever backing out. This is critical for high-output engines where heat expansion is significant. By preventing leaks, you ensure optimal exhaust scavenging and maintain peak horsepower. Whether you are building a classic muscle car or a modern performance machine, these bolts offer the peace of mind you need. Find all your essential engine fasteners at GGCRACING.

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