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Switzerland, Bern
1 Level
731 Review
83 Karma

Review on ARP 129-2503 Dampener Bolt for Enhanced Performance in GM Durmax Engines by Chris Cooper

Revainrating 3 out of 5

Not the same as OEM

Head diameter is smaller than OEM. There is no washing machine included as before. Called ARP and didn't get a satisfactory answer as to why the head has gotten smaller and whether I can use the original disc or should I buy an ARP disc. They didn't call me back with an answer as to whether a smaller diameter head would affect the clamping force of the bolt.

Pros
  • Package Weight: 0.53lb
Cons
  • Hard to tell