Dorman 603-5134 Heavy Duty Pressurized Engine Coolant Reservoir for International

The Dorman 603-5134 is a heavy-duty pressurized engine coolant reservoir from Dorman HD Solutions, engineered as a direct replacement for select International commercial vehicles. Designed to restore proper cooling system function, this reservoir matches the fit and function of the original equipment part for a reliable, hassle-free repair.

Key Features:

• Direct OE Replacement – Engineered to match the exact fit, form, and function of the original coolant reservoir
• Heavy-Duty Construction – Manufactured from quality polymers formulated to withstand extreme underhood heat and engine vibration
• Pressurized Design – Built to maintain proper system pressure, supporting efficient coolant circulation and engine temperature regulation
• Seamless Installation – Application-specific design allows for straightforward installation with no modifications required
• Dorman HD Solutions – Part of Dorman's dedicated heavy-duty truck product line, backed by over 100 years of aftermarket engineering experience

A failing or cracked coolant reservoir can lead to coolant loss, overheating, and costly engine damage. The Dorman 603-5134 provides a cost-effective alternative to dealer-priced OEM parts, keeping International trucks running at optimal operating temperature.