Engine Harmonic Balancer Crankshaft Pulley For Chevrolet Colorado GMC Canyon 2004-2012 And Isuzu I-280 I-290 2006-2008 6-Groove DOHC L4 2.8L 2.9L Replacement 12582403 Direct Replacement Fit
UPC:
✔️ 6-groove serpentine pulley, fits 04-12 Colorado/Canyon
Direct replacement engine component designed for GM mid‑size pickups and SUVs, optimized for six‑groove serpentine belt systems and DOHC L4 powertrains. This harmonic balancer pulley is a precise fit for 2004-2012 Chevrolet Colorado, 2004-2012 GMC Canyon, and 2006-2008 Isuzu i‑280/i‑290, delivering reliable crankshaft damping and belt alignment.
✅ Groove quantity: 6
✅ Drive belt type: Serpentine
✅ Center bolt included: No
✅ Reference numbers: 594-623, 12578072, 12582403
✅ Rust resistance & durability: IATF 16949 compliant; 96-hour salt spray tested
✅ Vehicle fit: Chevrolet Colorado 2004-2012; GMC Canyon 2004-2012; Isuzu i-280 2006-2008; i-290 2007-2008
💡 What is a harmonic balancer pulley used for and why replace it?
A handy explainer for everyday maintenance and performance concerns.
- It dampens crankshaft vibrations to reduce wear on bearings
- Keeps the serpentine belt aligned for smooth accessory operation
- Direct replacement helps maintain timing accuracy on DOHC engines
- Designed to work with 6-groove belt systems in GM vehicles