Dorman OE Solutions Engine Coolant Reservoir for 2018-2019 BMW X5 X6 603-361

Pressurized coolant reservoir for 2018-2019 BMW X5 and 2019 BMW X6 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 and engine vibration while matching the original part's fit and function.

Key Features

• Direct replacement for specific BMW OEM part numbers including 17137647290 and 17117639021
• Constructed from durable materials designed to resist thermal stress and cracking
• Engineered to match original equipment form, fit, and function
• Validated through testing to ensure dependable performance
• Manufactured by Dorman with over 100 years of automotive aftermarket experience

Benefits

• Restores proper cooling system pressure to prevent overheating issues
• Eliminates coolant leaks caused by worn or damaged factory reservoirs
• Ensures a smooth installation process with direct-fit design
• Reduces the risk of repeat repairs through robust construction
• Provides a cost-effective solution compared to dealer-only parts
• Helps maintain optimal engine operating temperatures for daily driving

Application

This part is intended for owners of BMW X5 and X6 models experiencing coolant loss, visible cracks in the expansion tank, or pressure system failures requiring a trustworthy aftermarket replacement.

Fitment Notes

• Compatible with 2018-2019 BMW X5 models
• Compatible with 2019 BMW X6 models
• Verify vehicle compatibility using provided BMW part numbers before purchase

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function for a smoother installation and reliable results.

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• Length: 11.9 inches
• Width: 9.5 inches
• Height: 8.3 inches
• Weight: 3.6 lbs