Product Description
Genuine GM 12560115 Crankshaft Harmonic Balancer Pulley
Fits 1997–2004 C5 Corvette and 2004–2005 Cadillac CTS-V 5.7L LS Engines
The Genuine GM 12560115 Crankshaft Harmonic Balancer Pulley is the OEM-quality replacement designed specifically for 1997–2004 C5 Corvette and 2004–2005 Cadillac CTS-V models equipped with the 5.7L LS engine. As these vehicles age, harmonic balancer deterioration becomes a common issue — often causing belt squeaks, vibration, or pulley wobble. This factory GM replacement restores smooth operation and ensures proper accessory belt alignment.
GM Original Equipment harmonic balancers are precision-engineered to reduce torsional crankshaft vibration and improve overall engine longevity. Constructed with premium materials and exact factory tolerances, this balancer guarantees reliable performance and a perfect fit. If your stock balancer is worn, cracked, or wobbling, this Genuine GM replacement is the fix you can trust to restore factory-smooth operation.
Key Features:
- Genuine GM OEM part – part number 12560115
- Direct replacement for 5.7L LS engines found in C5 Corvette and CTS-V
- Eliminates belt squeaks and vibration from worn or wobbling balancers
- Reduces crankshaft torsional vibration for smoother engine operation
- Precision-balanced and engineered for OEM fit and finish
- Durable factory construction ensures long-lasting reliability
- GM-recommended replacement for original harmonic balancer
Applications Include:
- CADILLAC CTS-V 2004–2005
- CHEVROLET CORVETTE 1997–2004 (C5)
