Dorman HD Solutions Heavy Duty Pressurized Coolant Reservoir for 2008-2020 Freightliner 603-5203

Heavy duty pressurized coolant reservoir for 2008-2020 Freightliner trucks used to replace cracked or leaking factory tanks.

Built to meet the manufacturer's design intent for reliable service, this replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.

Key Features

• Direct replacement for specific Freightliner heavy duty models
• Constructed from durable materials resistant to underhood heat
• Designed to handle engine vibration without cracking
• Pressurized design matches original equipment specifications
• Part number 603-5203 ensures correct identification

Benefits

• Restores proper coolant capacity and system pressure
• Prevents overheating caused by reservoir leaks or cracks
• Reduces risk of repeat repairs with robust construction
• Ensures smoother installation with OE-matching form and fit
• Provides long-lasting performance for daily driving demands

Application

This part is designed for fleet managers and owner-operators of Freightliner heavy duty trucks requiring a trustworthy fix for failed coolant tanks. It serves as a critical component for maintaining engine temperature regulation in demanding commercial transport environments.

Fitment Notes

• Compatible with select 2008-2020 Freightliner models
• Replaces Freightliner part numbers A0525263006, A0533118000, A0525263005, and A0525263007
• Also compatible with Spectra Premium FRT1703C and Standard Motor Products FRT1703C

Why Choose Dorman - HD Solutions?

• Backed by over 100 years of automotive aftermarket experience
• Engineered as direct-fit replacements to match OE form, fit, and function
• Validated through testing to stand up to daily driving demands
• Focus on fit, durability, and dependable performance restores vehicle confidence

What's in the Box

• 1 PC Heavy Duty Pressurized Coolant Reservoir

Item Dimensions

• 29.7in x 22.4in x 15.9in, 14.6lbs