SKU: 134-3202 | UPC: 672036034863
ARP LS1 LS2 12pt Water Pump Bolts w/ Thermostat Housing Bolts Kit Fits 1997-2007 GM LS Engines
This ARP kit supplies 12-point water pump bolts and thermostat housing bolts designed specifically for GM LS1 and LS2 engines found in high-performance Chevrolet and Pontiac vehicles from 1997 to 2007. These fasteners replace weak OEM bolts to ensure secure water pump and thermostat housing retention under extreme heat and pressure. Enthusiasts rely on this kit for leak-free operation in street-driven cars, drag strips, and road courses.
Key Features
- Genuine ARP Fasteners: Forged from 8740 chromoly steel for consistent clamping force that resists fatigue in high-horsepower LS builds
- 12-Point Bolt Heads: Provide secure tool grip to prevent cam-out and stripped corners during installation
- Precision-Rolled Threads: Ensure maximum thread engagement and accurate torque values for repeatable performance
- Black Oxide Finish: Resists corrosion while maintaining a professional look under the hood
- Complete Kit Contents: Includes all required bolts for water pump and thermostat housing with matched lengths for direct replacement
Product Notes
- Engineered for LS1 LS2 LS6 applications including Cathedral Port heads
- Compatible with aluminum LS blocks and aftermarket water pumps
- Small lightweight kit ships quickly without oversize fees
Installation Notes
- Professional installation recommended.
- Clean all threads thoroughly and apply ARP Ultra-Torque lubricant for precise torque
- Torque to ARP specs: water pump bolts 22 ft-lbs, thermostat bolts 18 ft-lbs in sequence. recheck after 100 miles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Corvette | Base, 50th Anniversary Edition, Z06 |
| 1998-2002 | Chevrolet | Camaro | Z28, SS |
| 1998-2002 | Pontiac | Firebird | Formula, Trans Am |
| 2004-2006 | Pontiac | GTO | Base |
| 2003-2006 | Chevrolet | SSR | All |
| 1999-2007 | Chevrolet | Silverado 1500 | LS1/LS2 Equipped |
| 1999-2007 | GMC | Sierra 1500 | LS1/LS2 Equipped |
Why Choose ARP?
- Trusted by NHRA Pro Stock teams and millions of engine builders for over 50 years
- Every fastener exceeds OEM strength ratings for extreme duty cycles
- CNC-machined and heat-treated for exact fit and unlimited reusability
Frequently Asked Questions
- Q: Will this kit fit LS3 or later engines?
A: Designed for LS1 LS2 LS6 with Cathedral Port intake. LS3 requires ARP 134-3607 due to different water pump bolt pattern - Q: What material are the bolts made from?
A: High-tensile 8740 chromoly steel with black oxide coating rated at 200,000 PSI tensile strength - Q: Is special hardware needed for installation?
A: No. kit is complete and direct-fit replacement, but use ARP thread lube and follow torque sequence for best results
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact protective box 6 x 4 x 1 inches
- Weight: 0.25 lbs
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