ARP

ARP Harmonic Balancer Bolt 2001-2024 GM 6.6L Duramax 8740 Chrome Moly

SKU: arp129-2503 UPC: 672036046835
In stock - 100 items available
$30.64

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

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The crank snout bolt holds the harmonic balancer on the 6.6L Duramax, and ARP makes this replacement from black-oxide 8740 chrome moly. ARP lists it as a bolt only.

Key Features

  • 8740 chrome moly steel
  • Black oxide finish
  • Bolt only (per ARP)
  • Made in the USA

Fitment

  • 2001-2024 Chevrolet Silverado 2500 HD and 3500 HD with 6.6L Duramax
  • 2001-2024 GMC Sierra 2500 HD and 3500 HD with 6.6L Duramax

Product Details

  • Brand: ARP
  • Manufacturer Part Number: 129-2503

Orders typically ship within 24–48 hours of being received, but because of vendor shipping times some orders may take longer. We ship within the United States only (48 contiguous states plus DC).

Shipping Height: 1.0

Shipping Length: 9.5

Shipping Width: 5.8
California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.