Description Coolant Reservoir for 2001-2007 GM 6.6L Duramax Fits ALL LB7, LLY & LBZ Models Dorman 603-125 Dorman’s Engine Coolant Recovery Tank is designed for enduring use. It resists the expansion and cracking that extreme temperature fluctuations can cause. The durable plastic construction prevents coolant fluid loss. Comes with reservoir cap Level sensor included (where applicable) Direct replacement for a proper fit every time Quality tested to ensure trouble-free installation and performance
