ARP LS1/LS2 12 Pt Rear Motor Cover Bolt Kit — Fits GM LS Series

SKU: ARP134-1504
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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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Premium 12-Point Rear Motor Cover Hardware

Upgrade your engine's rear cover with the ARP 134-1504 12-Point Rear Motor Cover Bolt Kit. Designed for LS1 and LS2 engines, this kit combines the extreme durability of ARP’s 8740 chromoly steel with a sleek, 12-point head design. It is the perfect choice for builders who demand both structural superiority and a custom, high-performance aesthetic for their engine build.

Technical Specifications and Benefits

  • Head Style: 12-point design for superior torque and custom look
  • Material: High-tensile 8740 chromoly steel
  • Finish: Black oxide coating for long-lasting corrosion resistance
  • Fitment: Precision-machined for LS1 and LS2 rear cover housings
  • Performance: Provides consistent, high-clamping force to prevent leaks

The rear motor cover is a vital area that requires precise clamping pressure to ensure the gasket seals correctly. Using 12-point hardware allows for higher torque values and easier access in tight quarters, ensuring that your rear main cover is secured properly every single time. These bolts are not just about looks; they are engineered to handle the stresses of high-performance driving, ensuring that your engine remains leak-free under load. Whether you are building a high-horsepower street car or a dedicated racing machine, this bolt kit provides the reliability you need. Elevate your build with the best hardware on the market, available right here 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

Premium 12-Point Rear Motor Cover Hardware

Upgrade your engine's rear cover with the ARP 134-1504 12-Point Rear Motor Cover Bolt Kit. Designed for LS1 and LS2 engines, this kit combines the extreme durability of ARP’s 8740 chromoly steel with a sleek, 12-point head design. It is the perfect choice for builders who demand both structural superiority and a custom, high-performance aesthetic for their engine build.

Technical Specifications and Benefits

  • Head Style: 12-point design for superior torque and custom look
  • Material: High-tensile 8740 chromoly steel
  • Finish: Black oxide coating for long-lasting corrosion resistance
  • Fitment: Precision-machined for LS1 and LS2 rear cover housings
  • Performance: Provides consistent, high-clamping force to prevent leaks

The rear motor cover is a vital area that requires precise clamping pressure to ensure the gasket seals correctly. Using 12-point hardware allows for higher torque values and easier access in tight quarters, ensuring that your rear main cover is secured properly every single time. These bolts are not just about looks; they are engineered to handle the stresses of high-performance driving, ensuring that your engine remains leak-free under load. Whether you are building a high-horsepower street car or a dedicated racing machine, this bolt kit provides the reliability you need. Elevate your build with the best hardware on the market, available right here 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

Premium 12-Point Rear Motor Cover Hardware

Upgrade your engine's rear cover with the ARP 134-1504 12-Point Rear Motor Cover Bolt Kit. Designed for LS1 and LS2 engines, this kit combines the extreme durability of ARP’s 8740 chromoly steel with a sleek, 12-point head design. It is the perfect choice for builders who demand both structural superiority and a custom, high-performance aesthetic for their engine build.

Technical Specifications and Benefits

  • Head Style: 12-point design for superior torque and custom look
  • Material: High-tensile 8740 chromoly steel
  • Finish: Black oxide coating for long-lasting corrosion resistance
  • Fitment: Precision-machined for LS1 and LS2 rear cover housings
  • Performance: Provides consistent, high-clamping force to prevent leaks

The rear motor cover is a vital area that requires precise clamping pressure to ensure the gasket seals correctly. Using 12-point hardware allows for higher torque values and easier access in tight quarters, ensuring that your rear main cover is secured properly every single time. These bolts are not just about looks; they are engineered to handle the stresses of high-performance driving, ensuring that your engine remains leak-free under load. Whether you are building a high-horsepower street car or a dedicated racing machine, this bolt kit provides the reliability you need. Elevate your build with the best hardware on the market, available right here at GGCRACING.

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