Description
ARP 672-1003 bolts are a high-strength replacement for the factory exhaust up-pipe bolts on 2001-2016 GM 6.6L Duramax engines. They are made from 8740 chromoly steel, heat-treated before the threads are rolled for fatigue strength, and finished in black oxide with a compact 12-point head for tight spots around the manifolds.
ARP part number: 672-1003
Application: Duramax 6.6L LB7-LML 2001-2016 (up-pipe bolts)
Size: M10 x 1.50 x 30mm
Head: 12-point, 12mm socket
Material: 8740 chromoly steel, black oxide finish
Important: Sold as a pack of 5 bolts. A Duramax uses 12 up-pipe bolts per engine (6 per side), so a full replacement takes 3 packs (3 bolts left over).
Fitment
- Duramax LB7 2001-2004
- Duramax LLY 2004.5-2005
- Duramax LBZ 2006-2007
- Duramax LMM 2007.5-2010
- Duramax LML 2011-2016
What's Included
- 5 ARP M10 x 1.50 x 30mm 12-point bolts
Always follow ARP's published torque values and use ARP lubricant for accurate preload.
