Dorman OE Solutions Engine Coolant Reservoir for 2003-2006 BMW X5 and Land Rover Range Rover 603-270

Pressurized coolant reservoir for 2003-2006 BMW X5 and 2003-2005 Land Rover Range Rover used to replace cracked or leaking factory expansion tanks.

Built to meet the manufacturer's design intent for reliable service, this unit is constructed from quality materials engineered to withstand underhood heat cycles and engine vibration without failing.

Key Features

• Direct replacement for original equipment part numbers including BMW 17111742231 and PCF000030
• Manufactured from durable materials resistant to thermal stress and cracking
• Engineered to match the fit, form, and function of the factory component
• Designed to handle standard system pressure requirements
• Validated through testing to ensure long-term durability

Benefits

• Restores proper coolant capacity and prevents overheating issues
• Eliminates leaks caused by aged or damaged plastic tanks
• Ensures a precise fit for faster and easier installation
• Reduces the risk of repeat repairs with robust construction
• Provides a cost-effective solution compared to dealer parts
• Helps maintain optimal engine operating temperature

Application

Ideal for owners of BMW X5 and Land Rover Range Rover models experiencing coolant loss, visible cracks in the expansion tank, or warning lights related to low coolant levels.

Fitment Notes

• Compatible with 2003-2006 BMW X5 models
• Compatible with 2003-2005 Land Rover Range Rover models
• Verify vehicle compatibility using part number 603-270 before purchase

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Backed by over 100 years of automotive aftermarket experience
• Built with quality materials to stand up to daily driving demands
• Offers a smart way to restore your vehicle with confidence and dependability

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• Length: 10.3 inches
• Width: 7.6 inches
• Height: 8.3 inches
• Weight: 2.1 lbs