CCIU Harmonic Balancer / Crankshaft Pulley Replacement 594-566 – Fits Chevy/GMC 8.1L V8 Trucks & SUVs (Silverado 2500 HD, Suburban, Sierra, Yukon XL, Avalanche)

About This Product

Is your big Chevy or GMC truck with the 8.1L V8 engine starting to vibrate more than usual? A worn-out harmonic balancer (also called a crankshaft damper) could be the culprit. This replacement part is a direct fit for OEM numbers 594-566, 594566, and 12555140. It's designed for specific 2001-2006 models like the Chevrolet Avalanche 2500, Silverado 2500/3500 HD, Suburban 2500, and the GMC Sierra 2500/3500 HD, and Yukon XL 2500 – all with that massive 8.1-liter engine. This isn't just a pulley; it has a special rubber vibration damper bonded between durable steel components. Its job is to absorb and reduce the torsional vibrations from the crankshaft, which smooths out your engine's operation and can help protect other components from stress. It's manufactured under strict quality controls (TS16949 certified) for reliability. Comes with a reassuring 1-year or 50,000 km warranty. A crucial repair part to restore smoothness and longevity to your heavy-duty truck.