ARP Header Bolt Kit 3/8in Flange SS 12pt — Fits Chevy SBC & Gen III LS Engines

SKU: ARP434-1202
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About ARP ARP (Automotive Racing Products) makes the strongest fasteners ...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 ARP

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

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Ultimate Header Security for Chevy Engines

Ensure your exhaust headers stay sealed tight under the most extreme racing conditions with the ARP 3/8in Flange SS 12pt Header Bolt Kit. Designed specifically for Small Block Chevy (SBC) and Gen III LS platforms, these bolts provide superior clamping force compared to standard factory hardware. Crafted from premium stainless steel, they offer exceptional corrosion resistance and high-tensile strength to prevent header leaks and gasket failure.

Key Features and Benefits

  • High-Strength Stainless Steel: Resists rust and heat-induced fatigue.
  • 12-Point Head Design: Allows for easier access in tight engine bays.
  • Precision Fitment: Engineered for perfect thread engagement on SBC and LS blocks.
  • Flange Design: Provides a wider load distribution for a secure, leak-free seal.

Whether you are building a high-performance street machine or a dedicated track car, these bolts are the industry standard for reliability. The 12-point head profile ensures you can torque them down properly even when space is limited by headers or chassis components. Stop worrying about loose bolts and exhaust leaks that sap your engine's power. Trust the engineering excellence of ARP to keep your exhaust system performing at its peak. Find all your high-performance engine hardware at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About ARP

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Watch in action

Ultimate Header Security for Chevy Engines

Ensure your exhaust headers stay sealed tight under the most extreme racing conditions with the ARP 3/8in Flange SS 12pt Header Bolt Kit. Designed specifically for Small Block Chevy (SBC) and Gen III LS platforms, these bolts provide superior clamping force compared to standard factory hardware. Crafted from premium stainless steel, they offer exceptional corrosion resistance and high-tensile strength to prevent header leaks and gasket failure.

Key Features and Benefits

  • High-Strength Stainless Steel: Resists rust and heat-induced fatigue.
  • 12-Point Head Design: Allows for easier access in tight engine bays.
  • Precision Fitment: Engineered for perfect thread engagement on SBC and LS blocks.
  • Flange Design: Provides a wider load distribution for a secure, leak-free seal.

Whether you are building a high-performance street machine or a dedicated track car, these bolts are the industry standard for reliability. The 12-point head profile ensures you can torque them down properly even when space is limited by headers or chassis components. Stop worrying about loose bolts and exhaust leaks that sap your engine's power. Trust the engineering excellence of ARP to keep your exhaust system performing at its peak. Find all your high-performance engine hardware at GGCRACING.

Product Details

Product Description

About ARP

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Watch in action

Ultimate Header Security for Chevy Engines

Ensure your exhaust headers stay sealed tight under the most extreme racing conditions with the ARP 3/8in Flange SS 12pt Header Bolt Kit. Designed specifically for Small Block Chevy (SBC) and Gen III LS platforms, these bolts provide superior clamping force compared to standard factory hardware. Crafted from premium stainless steel, they offer exceptional corrosion resistance and high-tensile strength to prevent header leaks and gasket failure.

Key Features and Benefits

  • High-Strength Stainless Steel: Resists rust and heat-induced fatigue.
  • 12-Point Head Design: Allows for easier access in tight engine bays.
  • Precision Fitment: Engineered for perfect thread engagement on SBC and LS blocks.
  • Flange Design: Provides a wider load distribution for a secure, leak-free seal.

Whether you are building a high-performance street machine or a dedicated track car, these bolts are the industry standard for reliability. The 12-point head profile ensures you can torque them down properly even when space is limited by headers or chassis components. Stop worrying about loose bolts and exhaust leaks that sap your engine's power. Trust the engineering excellence of ARP to keep your exhaust system performing at its peak. Find all your high-performance engine hardware at GGCRACING.

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