Dorman 603-336 Pressurized Coolant Reservoir

The Dorman 603-336 is a direct replacement pressurized engine coolant reservoir manufactured from premium quality materials to withstand the extreme stresses of underhood heat and engine vibration. Engineered to meet or exceed OEM standards, this coolant reservoir is constructed from premium-grade materials, providing durability against extreme temperatures and coolant exposure.

Key Features:

• Direct replacement design that matches the fit and function of original equipment for trouble-free installation
• Complete assembly that comes with all necessary hardware for easy replacement of old, damaged, or leaking parts
• Durable construction built to withstand underhood heat and vibration for long-lasting reliability
• Backed by over 100 years of automotive aftermarket experience from Dorman
• Thoroughly tested to ensure optimum fit and performance on specific vehicle applications

This pressurized coolant reservoir is designed specifically for BMW vehicles and is compatible with OEM part numbers including 17107514964, 17111468076, 17111712669, 17107503769, 17111705613, and others. Key symptoms indicating the need for replacement include visible leaks, cracks in the reservoir, coolant warning lights on the dashboard, and an overheating engine.