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SKU: 230-4201 | UPC: 672036032678
ARP 2001-2010 6.6L GM Duramax Diesel Head Stud Kit
ARP 230-4201 Head Stud Kit upgrades 2001-2010 GM 6.6L Duramax LB7 LLY LBZ LMM engines in Chevy Silverado GMC Sierra and vans with stronger fasteners than stock bolts. Stud design delivers even clamping pressure to prevent head gasket failure under boost and heat. Built for daily drivers and modified trucks this kit ensures reliable sealing and torque retention.
Key Features
- ARP2000 Alloy Material: Forged steel construction resists fatigue and maintains clamp load over 200000 psi tensile strength
- Stud Configuration: Minimizes rotational wear on block threads for accurate repeatable torque values
- Precision Rolled Threads: Increases thread engagement by 30 percent over cut threads for secure hold
- 12-Point Nuts: Hardened steel nuts with wide base distribute load evenly during high torque
- Complete Kit: Includes studs washers nuts and instructions for both cylinder heads
Product Notes
- Requires thread cleaning in block and head for proper installation
- Lubricate with ARP Ultra-Torque fastener lubricant only
- Securely packaged to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Torque to ARP specs 85 ft-lbs hot in sequence after initial 500 miles
- Compatible with OEM or aftermarket head gaskets and MLS designs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base LS LT |
| 2001-2006 | Chevrolet | Silverado 2500 HD | WT SLE SLT |
| 2001-2013 | Chevrolet | Silverado 2500 HD | LT LTZ |
| 2004-2013 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2001-2006 | Chevrolet | Silverado 3500 | LS LT WT |
| 2007-2010 | Chevrolet | Silverado 3500 HD | LT LTZ WT |
| 2001-2013 | GMC | Sierra 2500 HD | SLE SLT WT Base Denali |
| 2002-2006 | GMC | Sierra 3500 | Base SL SLE SLT WT |
| 2007-2010 | GMC | Sierra 3500 HD | SLE SLT WT Denali |
| 2006-2010 | Chevrolet | Express 2500 | Base LS LT |
| 2006-2010 | Chevrolet | Express 3500 | Base LS LT |
| 2006-2010 | GMC | Savana 2500 | Base |
| 2006-2010 | GMC | Savana 3500 | Base |
Why Choose ARP?
- Proven in NHRA IHRA and diesel competitions for decades
- Manufactured in USA with aerospace-grade processes
- Engineered for extreme cylinder pressures in turbo diesel applications
Frequently Asked Questions
-
Q: Does this kit fit 2004.5-2005 LLY Duramax Silverado 2500HD?
A: Yes ARP 230-4201 covers all 2001-2010 6.6L Duramax including LB7 LLY LBZ LMM in Chevy trucks and GMC Sierras with diesel engine. -
Q: What material are the studs made from?
A: ARP2000 proprietary alloy with tensile strength over 200000 psi and cryogenic treatment for durability. -
Q: What is the ARP warranty policy?
A: Lifetime warranty against manufacturer defects when installed and torqued per ARP instructions.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Protective foam-lined box 12 x 10 x 3 inches
- Weight: 5.1 lbs
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