Product Description

ARP 100-7531 Valve Cover Bolt Kit – 12-Point for 2001–2004 GM 6.6L Duramax LB7

Lock down your LB7 valve covers the right way. The ARP 100-7531 12-point valve cover bolt kit delivers the clamping consistency and durability ARP fasteners are known for—perfect for leak-free sealing on stock and tuned Duramax engines. Precision threads, uniform preload, and corrosion-resistant finish help your covers stay put under heat and vibration. ARP 100-7531, ARP valve cover bolts LB7, 12 point valve cover bolts Duramax, GM 6.6L Duramax LB7 hardware, ARP fasteners kit, CPP Diesel

• Engineered for 2001–2004 GM 6.6L Duramax LB7 fitment.
• 12-point heads for easy, accurate torque and tight clearances.
• Includes matched washers; use with ARP Ultra-Torque for best results.

Perfect ARP Pairings (Cross-Reference)

Building out your LB7? Customers often add these ARP parts:

• ARP 230-4201 Head Stud Kit (2001–2016 Duramax)
• ARP 230-4202 625+ Head Stud Kit (2001–2016 Duramax)
• ARP 129-2503 Harmonic Damper Bolt Kit (2001–2019 Duramax)
• Later-model valve cover kits: ARP 100-7533 (’04.5–’16 12-pt) or ARP 100-7534 (’04.5–’16 Hex).

Fitment

• 2001–2004 Chevrolet Silverado 2500HD/3500 – 6.6L Duramax LB7
• 2001–2004 GMC Sierra 2500HD/3500 – 6.6L Duramax LB7

Installation Notes

• Use ARP Ultra-Torque lube and torque in sequence to OEM spec.
• Clean sealing surfaces; replace valve cover gaskets if hardened or leaking.

FAQ – ARP 100-7531

Does this kit fit my LB7?
Yes—ARP 100-7531 is specifically for 2001–2004 GM 6.6L Duramax LB7 valve covers.

Is this 12-point or hex?
12-point head design. If you want hex for LB7, see ARP 100-7532. For 2004.5–2016 applications, see ARP 100-7533 (12-pt) or ARP 100-7534 (hex).

What socket size is used?
8mm 12-point socket is typical for this kit (verify during install).

What comes in the box?
Matched valve cover bolts and washers for both covers; use with ARP Ultra-Torque.

Specifications for ARP 100-7531