SKU: 613-1000 | UPC: 672036015886
ARP 3/8in – 16 x 1.000 12pt SS Bolts (5/pkg) for 1997-2006 GM LS Engines
ARP 3/8-16 x 1.000 inch 12-point stainless steel bolts come in convenient 5-packs for performance engine builds. These fasteners suit GM LS1 LS2 LS6 engines in vehicles like Chevrolet Camaro Corvette and Pontiac Firebird GTO. They provide dependable clamping force with corrosion resistance for reliable operation under high stress.
Key Features
- 12-Point Head Design: Allows secure wrench grip to prevent cam-out during high-torque installs
- Precision-Rolled Threads: Ensures maximum thread engagement and consistent torque values every time
- Stainless Steel Alloy: Resists corrosion in harsh engine environments while maintaining strength
- 1.000 Inch Length: Matches exact requirements for rocker trunnions valve covers and accessory brackets
- ARP Engineering: Rated for extreme loads in street strip and track conditions
Product Notes
- Inspect threads for damage before use and chase holes as needed
- Store in dry conditions to preserve finish integrity
- Lightweight design ships free on orders over common thresholds
Installation Notes
- Professional installation recommended.
- Clean threads and apply ARP Ultra-Torque lubricant for precise torque
- Fits standard 3/8-16 tapped holes in LS rocker arms and hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Corvette | Base LS1 LS6 |
| 1998-2002 | Chevrolet | Camaro | Z28 SS LS1 |
| 1998-2002 | Pontiac | Firebird | Formula Trans Am LS1 |
| 2004-2006 | Pontiac | GTO | Base LS1 LS2 |
| 1999-2006 | Chevrolet | Silverado 1500 | LS Engine Models |
| 1999-2006 | GMC | Sierra 1500 | LS Engine Models |
Why Choose ARP?
- Decades of dominance in racing with millions of fasteners in winners
- Material science tailored for engine stress without fatigue failure
- CNC machining and heat treatment for exact dimensions and load ratings
Frequently Asked Questions
- Q: Will these bolts work for LS rocker trunnion upgrades?
A: Yes ARP 613-1000 bolts are direct replacements in popular LS1 LS6 trunnion kits for 1997-2004 Corvette Camaro and Firebird providing secure hold at specified torque. - Q: What grade of stainless steel is used?
A: ARP uses premium 300-series stainless steel alloy with superior tensile strength and rust resistance compared to hardware store fasteners. - Q: What is the ARP warranty on these bolts?
A: ARP offers a limited lifetime warranty against manufacturing defects and fastener failure when installed and torqued per guidelines.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Secure polybag in 4 x 3 x 1 inch box
- Weight: 0.05 lbs





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