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GM Performance Locking Fasteners
Welcome to the GM locking fasteners section of the Stage 8 website. Each kit is manufacturer specific using USA or metric bolt sizes.
All Stage 8 Locking Fasteners are engineered to keep critical bolted joints tight in the severest operating conditions. Guaranteed. Stage 8 Locking Fasteners are also available in custom sizes and material by special order.
Click the section option that fits your needs best; for GM we have header bolts, collector bolts, harmonic balancer bolts, oil pan bolts, valve cover bolts, starter motor bolts, intake manifold bolts and other fastener kits.
The Stage 8 Sales and Tech departments are also available to assist with your order.
- Bolts Are Aircraft Quality Grade 8– 4130 Alloy Steel
- Bolts Plated With A Duplex Nickel Finish
- Retainers are 5052-H32 Polished Aluminum
- Snap Rings & Clips Are Spring Steel
- Clips Are Plated With Duplex Nickel Finish
Stage 8 Locking Fasteners install easily and are available in U.S. and Metric sizes. The bolts are application specific as either hex head with a 3/16 recessed Allen head or 12 point.