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SKU: 100-7531 | UPC: 672036043117
ARP Valve Cover Bolts for 2001-2004 Chevy GMC Duramax 6.6L LB7
ARP 100-7531 valve cover bolt kit secures valve covers on 2001-2004 Chevrolet Silverado 2500HD 3500HD and GMC Sierra 2500HD 3500HD with 6.6L LB7 Duramax diesel engines. These bolts deliver reliable clamping force to maintain gasket seals under high boost and vibration. Engine builders choose them for precise fit and consistent torque retention during performance upgrades.
Key Features
- Material: 8740 chrome moly steel resists fatigue and stretching for long-term valve cover retention
- Finish: Black oxide coating protects against rust and corrosion in engine bay conditions
- Design: Compact 12-point heads allow access with standard sockets in tight spaces around the Duramax heads
- Kit Contents: Includes 20 bolts (1/4-20 x 1.900 inch) and flat washers for complete installation
- Origin: Made in USA with ARP precision machining for exact OEM replacement fit
Product Notes
- Torque to ARP specifications (18-20 ft-lbs dry) for optimal gasket compression
- Inspect valve cover gaskets during install. reuse only if undamaged
- Ships in protective packaging to prevent thread damage
Installation Notes
- Professional installation recommended.
- Clean threads in cylinder head thoroughly before assembly
- Compatible with factory valve covers and aftermarket gaskets
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 HD | 6.6L V8 Diesel LB7 Duramax |
| 2001-2004 | Chevrolet | Silverado 3500 HD | 6.6L V8 Diesel LB7 Duramax |
| 2001-2004 | GMC | Sierra 2500 HD | 6.6L V8 Diesel LB7 Duramax |
| 2001-2004 | GMC | Sierra 3500 HD | 6.6L V8 Diesel LB7 Duramax |
Why Choose ARP?
- ARP fasteners power wins in NHRA IHRA and diesel drag racing
- Heat-treated 8740 alloy exceeds OEM strength ratings
- CNC machined threads ensure even load distribution and sealing
Frequently Asked Questions
-
Q: Does this kit fit 2004.5 or later Duramax engines?
A: No, 100-7531 fits only 2001-2004 LB7 6.6L. use ARP 100-7907 for LLY and later -
Q: What is the difference between ARP chrome moly and stainless options?
A: 8740 chrome moly offers higher tensile strength for high-performance diesel use. stainless provides corrosion resistance for milder applications -
Q: Is a torque wrench required for installation?
A: Yes, use a calibrated inch-pound torque wrench and follow ARP torque values for proper sealing without gasket damage
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Compact box 1 x 6 x 8 inches
- Weight: 0.80 lbs
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ARP (Automotive Racing Products) is the world’s premier manufacturer of high-strength engine and driveline fasteners—head studs and bolts, main studs, rod bolts, and more—engineered and manufactured in-house from start to finish for race-proven reliability. With vertically integrated processes that include cold heading, machining, heat-treating, thread rolling after heat treat, and rigorous QA, ARP maintains aerospace-level certifications (ISO 9001 and AS9100) and validates every part for repeatable clamp load and fatigue resistance. Signature alloys such as 8740 chromoly, ARP2000, L19, and Custom Age 625+ deliver ultimate tensile strengths up to the super-alloy range, while ARP Ultra-Torque fastener assembly lubricant helps achieve consistent pre-load during installation. From street performance builds to professional motorsport programs, ARP fasteners provide precise fitment, superior metallurgy, and the durability needed to keep engines together at elevated cylinder pressures and...
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