ARP
ARP Harmonic Balancer Bolt Kit 12-Point — Fits GM 6.6L Duramax
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ARP Harmonic Balancer Bolt Kit 12-Point — Fits GM 6.6L Duramax
ARP

ARP Harmonic Balancer Bolt Kit

SKU: ARP129-2503

About ARP ARP (Automotive Racing Products) makes the strongest fasteners ...Read more

Price:
$30.99
300 ENTRIES10X
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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

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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

Reliable Crankshaft Performance

The harmonic balancer is a critical component of your GM 6.6L Duramax engine, and keeping it secured is vital for long-term engine health. The ARP Harmonic Balancer Bolt Kit is designed to withstand the extreme torsional vibrations and high-torque demands of diesel engines. By replacing your factory bolt with this premium ARP unit, you significantly reduce the risk of balancer failure.

Technical Advantages

  • Superior 8740 chromoly steel construction
  • Increased clamping force for balancer stability
  • Precision-rolled threads for consistent torque
  • Durable finish to resist engine bay corrosion
  • Perfect fitment for all 6.6L Duramax platforms

Diesel engines generate immense stress on the rotating assembly. This bolt kit provides the necessary clamping load to ensure the balancer stays perfectly aligned with the crankshaft, preventing costly engine damage. Whether you are performing a routine maintenance upgrade or a full engine build, ARP provides the security your Duramax deserves. Experience the difference in quality and engineering with this essential upgrade. Find all your high-performance diesel components at GGCRACING.

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

Reliable Crankshaft Performance

The harmonic balancer is a critical component of your GM 6.6L Duramax engine, and keeping it secured is vital for long-term engine health. The ARP Harmonic Balancer Bolt Kit is designed to withstand the extreme torsional vibrations and high-torque demands of diesel engines. By replacing your factory bolt with this premium ARP unit, you significantly reduce the risk of balancer failure.

Technical Advantages

  • Superior 8740 chromoly steel construction
  • Increased clamping force for balancer stability
  • Precision-rolled threads for consistent torque
  • Durable finish to resist engine bay corrosion
  • Perfect fitment for all 6.6L Duramax platforms

Diesel engines generate immense stress on the rotating assembly. This bolt kit provides the necessary clamping load to ensure the balancer stays perfectly aligned with the crankshaft, preventing costly engine damage. Whether you are performing a routine maintenance upgrade or a full engine build, ARP provides the security your Duramax deserves. Experience the difference in quality and engineering with this essential upgrade. Find all your high-performance diesel components at GGCRACING.

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