ARP - Chevy Duramax Diesel '05 & Earlier Lb7/Lly Main Stud Kit - 230-5401

The ARP 230-5401 main stud kit is engineered for early GM Duramax diesel engines, improving bottom-end strength and bearing support.

Key Features

• Main stud kit for LB7 and early LLY Duramax engines


• High-strength ARP alloy construction


• Improves main cap stability


• Designed for high-load diesel operation


• Precision-machined for accurate torque

Compatibility & Installation Notes

• Fits GM Duramax LB7 and early LLY engines (2005 & earlier)


• Recommended during engine rebuilds


• Follow ARP torque sequence and specs

Prop 65 Warning

WARNING: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.