Michigan Motorsports Crankshaft Key | Like GM #12561513 | Fits GM LS Engines 4.8L 5.3L 5.7L 6.0L 6.2L 7.0L | OEM Harmonic Balancer Alignment Key

Description

• Genuine OEM GM Component: Manufactured to original equipment standards to ensure precise fitment and correct indexing on LS crankshafts.
• Critical Balancer Alignment: Properly locates the harmonic balancer and timing components to maintain accurate ignition timing and engine balance.
• Direct Replacement Design: Installs directly into the factory crankshaft keyway with no modifications required during service or rebuilds.
• Essential for Engine Service: Commonly required when replacing harmonic balancers, timing components, or during complete LS engine rebuilds.
• Wide LS Engine Compatibility: Fits a broad range of GM LS engines, making it a reliable replacement for multiple applications.

This GM LS crankshaft key 12561513 is a genuine OEM replacement designed to properly index the harmonic balancer and timing components on GM LS-based engines. Precision manufactured to factory specifications, this key ensures accurate alignment between the crankshaft snout, balancer, and timing gear, which is critical for proper ignition timing and engine balance. Ideal for engine rebuilds, balancer replacement, or timing service, it restores factory-correct fitment and reliability. Designed for long-term durability, this crankshaft key is an essential component for maintaining proper engine operation across a wide range of LS engine applications.

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