ARP SBC/GENII LS 1/4 Flange 12pt Header Bolt Kit — Fits Chevy Engines

SKU: ARP134-1201
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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.

High-Strength 12-Point Header Bolts for SBC and LS

Maximize your exhaust system's reliability with the ARP 134-1201 Header Bolt Kit. Designed to fit both Small Block Chevy (SBC) and Gen II LS engines, these 12-point flange bolts offer the perfect combination of high-tensile strength and ease of installation. The 12-point head design is ideal for tight engine bays where standard hex bolts might be difficult to access with a socket.

Technical Specifications

  • Material: 8740 chromoly steel for maximum durability.
  • Head Style: 12-point flange head for superior wrench engagement.
  • Finish: Black oxide coating to prevent corrosion.
  • Compatibility: Fits a wide range of SBC and Gen II LS configurations.
  • Performance: Prevents gasket failure and header loosening under extreme heat.

When you are building a high-output engine, every component matters. Standard bolts can stretch and fail, leading to exhaust leaks that reduce performance and can damage your engine components. The ARP 134-1201 kit is engineered to withstand the extreme thermal expansion and vibration of high-performance driving. By providing consistent and reliable clamping force, these bolts ensure your headers stay sealed, allowing your engine to perform at its peak. Trust in the quality of ARP fasteners to protect your investment. Whether you are a professional builder or a DIY enthusiast, you will appreciate the precision and strength of this kit. Get your engine hardware from the experts 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.

High-Strength 12-Point Header Bolts for SBC and LS

Maximize your exhaust system's reliability with the ARP 134-1201 Header Bolt Kit. Designed to fit both Small Block Chevy (SBC) and Gen II LS engines, these 12-point flange bolts offer the perfect combination of high-tensile strength and ease of installation. The 12-point head design is ideal for tight engine bays where standard hex bolts might be difficult to access with a socket.

Technical Specifications

  • Material: 8740 chromoly steel for maximum durability.
  • Head Style: 12-point flange head for superior wrench engagement.
  • Finish: Black oxide coating to prevent corrosion.
  • Compatibility: Fits a wide range of SBC and Gen II LS configurations.
  • Performance: Prevents gasket failure and header loosening under extreme heat.

When you are building a high-output engine, every component matters. Standard bolts can stretch and fail, leading to exhaust leaks that reduce performance and can damage your engine components. The ARP 134-1201 kit is engineered to withstand the extreme thermal expansion and vibration of high-performance driving. By providing consistent and reliable clamping force, these bolts ensure your headers stay sealed, allowing your engine to perform at its peak. Trust in the quality of ARP fasteners to protect your investment. Whether you are a professional builder or a DIY enthusiast, you will appreciate the precision and strength of this kit. Get your engine hardware from the experts 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.

High-Strength 12-Point Header Bolts for SBC and LS

Maximize your exhaust system's reliability with the ARP 134-1201 Header Bolt Kit. Designed to fit both Small Block Chevy (SBC) and Gen II LS engines, these 12-point flange bolts offer the perfect combination of high-tensile strength and ease of installation. The 12-point head design is ideal for tight engine bays where standard hex bolts might be difficult to access with a socket.

Technical Specifications

  • Material: 8740 chromoly steel for maximum durability.
  • Head Style: 12-point flange head for superior wrench engagement.
  • Finish: Black oxide coating to prevent corrosion.
  • Compatibility: Fits a wide range of SBC and Gen II LS configurations.
  • Performance: Prevents gasket failure and header loosening under extreme heat.

When you are building a high-output engine, every component matters. Standard bolts can stretch and fail, leading to exhaust leaks that reduce performance and can damage your engine components. The ARP 134-1201 kit is engineered to withstand the extreme thermal expansion and vibration of high-performance driving. By providing consistent and reliable clamping force, these bolts ensure your headers stay sealed, allowing your engine to perform at its peak. Trust in the quality of ARP fasteners to protect your investment. Whether you are a professional builder or a DIY enthusiast, you will appreciate the precision and strength of this kit. Get your engine hardware from the experts at GGCRACING.

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