SKU: 134-1504 | UPC: 672036034917
ARP LS1/LS2 12 Pt Rear Motor Cover Bolt Kit for 1997-2007 GM Vehicles
Secure your LS engine’s rear main seal housing with the ARP 134-1504 bolt kit featuring 12-point heads. Designed for LS1 and LS2 engines in Chevrolet Corvette 1997-2007, Camaro 1998-2002, Pontiac Firebird 1998-2002 and GTO 2004-2006. These bolts provide consistent torque retention and resist fatigue under high horsepower demands.
Key Features
- ARP 8740 Forged Steel: Delivers 200,000 PSI tensile strength to handle extreme vibration and heat cycles
- 12-Point Head Design: Allows precise wrench engagement to prevent cam-out and stripping during installation
- Precision-Rolled Threads: Ensures maximum thread strength and accurate torque values for leak-free sealing
- Black Oxide Finish: Resists corrosion in harsh engine bay environments for extended service life
- Application-Specific Sizing: M10 x 1.5mm x 65mm bolts match OEM locations on LS1/LS2 blocks exactly
Product Notes
- Inspect block threads for damage before installation to avoid cross-threading
- Store in original packaging to protect threads from contamination
- Compact kit ships via USPS Priority or UPS Ground for quick delivery
Installation Notes
- Professional installation recommended.
- Apply ARP Ultra-Torque lubricant to threads and under bolt heads per ARP specs
- Direct replacement for factory 10mm hex head bolts on LS rear cover
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Corvette | LS1 |
| 2005-2007 | Chevrolet | Corvette | LS2 |
| 1998-2002 | Chevrolet | Camaro | LS1 Z28/SS |
| 1998-2002 | Pontiac | Firebird | LS1 Formula/Trans Am |
| 2004-2006 | Pontiac | GTO | LS2 |
Why Choose ARP?
- Proven in NHRA and NASCAR racing for decades of reliability
- Every bolt exceeds SAE standards for material and machining
- Engineered in the USA with exact fit for GM LS platforms
Frequently Asked Questions
- Q: Will this kit fit LS2 engines in trucks or SUVs?
A: Yes fits all Gen III/IV LS1 LS2 blocks including trucks with LQ9 but confirm rear cover bolt pattern matches OEM - Q: What material are these bolts made from?
A: Heat-treated 8740 chrome moly steel with black oxide coating for strength and rust resistance - Q: What is the torque spec for installation?
A: ARP recommends 22 ft-lbs in crisscross sequence using moly lube check full ARP instructions included
Shipping & Handling
- Method: USPS Priority Mail or UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure plastic pouch in 6 x 4 x 1 inch box
- Weight: 0.2 lbs
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