Auto Racing Products BBC Harmonic Balancer Bolt Kit 12-Point — Fits Big Block Chevy

SKU: BQDN_235-2501
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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 Auto Racing Products

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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Ensure Stability with ARP Harmonic Balancer Bolts

The harmonic balancer is a critical component of your Big Block Chevy engine, and securing it properly is non-negotiable. The Auto Racing Products (ARP) Harmonic Balancer Bolt Kit is designed to keep your balancer firmly seated on the crankshaft, even under the most demanding racing conditions. Crafted from high-strength chromoly steel, this bolt is engineered to exceed OEM specifications for tensile strength and durability.

Technical Specifications

  • 1/2-20 Thread: Precision-machined for a perfect fit into your BBC crankshaft.
  • 1.550" Length: Optimized length for secure engagement and proper balancer seating.
  • 13/16" 12-Point Head: Offers superior torque capability and clearance for easy installation.
  • Black Oxide Finish: Provides a professional appearance and excellent corrosion resistance.

A loose harmonic balancer can cause severe engine damage, including crankshaft failure. By using an ARP bolt, you ensure that the balancer remains locked in place, maintaining proper engine balance and protecting your investment. The 12-point head design is a hallmark of professional engine building, allowing for accurate torquing and easier access with standard 12-point sockets. Whether you are building a street machine or a dedicated track car, this bolt kit provides the reliability you need. Don't risk your engine with substandard hardware; choose the proven strength of ARP. Explore our full range of engine fastener solutions at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Auto Racing Products

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

Ensure Stability with ARP Harmonic Balancer Bolts

The harmonic balancer is a critical component of your Big Block Chevy engine, and securing it properly is non-negotiable. The Auto Racing Products (ARP) Harmonic Balancer Bolt Kit is designed to keep your balancer firmly seated on the crankshaft, even under the most demanding racing conditions. Crafted from high-strength chromoly steel, this bolt is engineered to exceed OEM specifications for tensile strength and durability.

Technical Specifications

  • 1/2-20 Thread: Precision-machined for a perfect fit into your BBC crankshaft.
  • 1.550" Length: Optimized length for secure engagement and proper balancer seating.
  • 13/16" 12-Point Head: Offers superior torque capability and clearance for easy installation.
  • Black Oxide Finish: Provides a professional appearance and excellent corrosion resistance.

A loose harmonic balancer can cause severe engine damage, including crankshaft failure. By using an ARP bolt, you ensure that the balancer remains locked in place, maintaining proper engine balance and protecting your investment. The 12-point head design is a hallmark of professional engine building, allowing for accurate torquing and easier access with standard 12-point sockets. Whether you are building a street machine or a dedicated track car, this bolt kit provides the reliability you need. Don't risk your engine with substandard hardware; choose the proven strength of ARP. Explore our full range of engine fastener solutions at GGCRACING.

Product Details

Product Description

About Auto Racing Products

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

Ensure Stability with ARP Harmonic Balancer Bolts

The harmonic balancer is a critical component of your Big Block Chevy engine, and securing it properly is non-negotiable. The Auto Racing Products (ARP) Harmonic Balancer Bolt Kit is designed to keep your balancer firmly seated on the crankshaft, even under the most demanding racing conditions. Crafted from high-strength chromoly steel, this bolt is engineered to exceed OEM specifications for tensile strength and durability.

Technical Specifications

  • 1/2-20 Thread: Precision-machined for a perfect fit into your BBC crankshaft.
  • 1.550" Length: Optimized length for secure engagement and proper balancer seating.
  • 13/16" 12-Point Head: Offers superior torque capability and clearance for easy installation.
  • Black Oxide Finish: Provides a professional appearance and excellent corrosion resistance.

A loose harmonic balancer can cause severe engine damage, including crankshaft failure. By using an ARP bolt, you ensure that the balancer remains locked in place, maintaining proper engine balance and protecting your investment. The 12-point head design is a hallmark of professional engine building, allowing for accurate torquing and easier access with standard 12-point sockets. Whether you are building a street machine or a dedicated track car, this bolt kit provides the reliability you need. Don't risk your engine with substandard hardware; choose the proven strength of ARP. Explore our full range of engine fastener solutions at GGCRACING.

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