Product Description
Genuine GM 11610633 Starter Bolt
Fits 1997–Current LS & LT Based Engines – 4.8L, 5.3L, 5.7L, 6.0L, 6.2L
The Genuine GM 11610633 Starter Bolt is a high-quality OEM replacement fastener designed specifically for LS and LT series engines. Each bolt features the factory-style shaft knurling that provides a secure, vibration-resistant fit—an essential detail often missing in aftermarket alternatives. This ensures your starter stays firmly in place and resists loosening over time, even after repeated startup cycles.
Manufactured to precise GM specifications, this bolt offers a perfect fit, corrosion resistance, and long-term reliability. Ideal for restoring or maintaining your factory hardware, it’s sold individually and can be used as a direct replacement for missing or worn starter bolts. Most LS and LT engines use two of these longer bolts; however, some early LS car applications require one long and one short bolt for proper fitment.
Key Features:
- Genuine GM OEM starter bolt – part number 11610633
- 120mm under-head length, 10mm x 1.5 thread pitch
- Factory-style shaft knurling prevents loosening under vibration
- Direct replacement for damaged or missing factory hardware
- Corrosion-resistant finish for long-lasting durability
- Sold individually (1 bolt per package)
Fitment:
Compatible with all LS and LT based GM engines from 1997–current, including:
- LS1, LS2, LS3, LS6, L99, LSA, LS9
- L92, L94, L96, L76, L77, LY6, LFA, LZ1
- LY5, LMG, LMF, LH6, LC9, LY2, L20, L33
- LQ4, LQ9, LR4, LM7, L59, LS4, LH8, LH9
- LT1, LT2, LT4, L83, L84, L86, L87, L8B, L82, L8T
