Dorman HD Solutions Heavy Duty Pressurized Coolant Reservoir for 2018 IC Corporation and International 603-5104

Heavy duty pressurized coolant reservoir for 2018 IC Corporation and International trucks used to replace cracked or leaking factory tanks.

Built to meet the manufacturer's design intent for reliable service, this unit is engineered to withstand underhood heat and engine vibration while matching the original fit and function.

Key Features

• Direct replacement for Navistar part numbers 2602872C91 and 2599039C91
• Constructed from quality materials designed for heavy duty applications
• Pressurized design maintains proper cooling system integrity
• Engineered to match OE form, fit, and function
• Validated through testing for durability and performance

Benefits

• Restores cooling system pressure to prevent overheating
• Eliminates leaks caused by cracked or damaged stock reservoirs
• Reduces risk of repeat repairs with robust construction
• Ensures smoother installation with direct-fit design
• Provides long-lasting reliability for daily driving demands
• Backed by over 100 years of automotive aftermarket experience

Application

Ideal for fleet managers and owner-operators of 2018 IC Corporation and International trucks needing a trustworthy fix for failed coolant tanks without visiting a dealership.

Fitment Notes

• Compatible with 2018 IC Corporation models
• Compatible with 2018 International models
• Replaces multiple Navistar and Automann part numbers including 575.1033

Why Choose Dorman - HD Solutions?

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

What's in the Box

• 1 PC Coolant Reservoir

Item Dimensions

• 19.8in x 15.2in x 9.9in, 6.8lbs