








⚡ Upgrade your LS engine’s heartbeat with precision and power!
Michigan Motorsports LS Main Crank Bearings (SI-Series) are premium bi-metal silicon aluminum bearings designed for stock and performance Chevy LS engines (4.8L to 6.2L Gen 3/4). Featuring improved oil clearance and crankshaft finish, they reduce wear, noise, and vibration, ensuring enhanced engine longevity and smoother operation.
| Manufacturer | Michigan Motorsports |
| Part number | Ai261 |
| Item Weight | 458 g |
| Package Dimensions | 23.6 x 12.9 x 4.9 cm; 458 g |
| Item model number | Ai261 |
| Material | Aluminum,Silicon |
| Item Package Quantity | 1 |
| Specification met | Manufacturer's Specifications |
| Included components | no |
| Batteries included? | No |
| Batteries Required? | No |
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