Dorman 626-541 Radiator Coolant Hose

OE FIX Heater Hose Assembly

Dorman 626-541 is a radiator coolant hose and heater hose assembly built for select Ford and Lincoln applications. It replaces the original HVAC heater hose design with an upgraded aluminum Y-connector to address a common failure point in the plastic connector used on the OE part.

• Upgraded aluminum Y-connector for improved durability
• Molded hose assembly for a direct-fit style replacement
• Constructed with metal, plastic, and rubber materials
• Natural finish
• Three-branch hose layout for the specified cooling system routing
• Maximum working pressure: 50 psi
• Centerline length: 5.69 in.

Fitment Details

Compatible With select 2011-2018 Ford F-150, from thermostat housing to water outlet; 2011-2018 Ford Mustang, from thermostat housing to water outlet; and 2011-2014 Lincoln Mark LT, from thermostat housing to water outlet.

This part cross-references Ford BR3Z8566A for the same application.

Product Overview

Built as an OE FIX replacement, Dorman 626-541 addresses a known weak point in the original heater hose assembly by replacing the plastic Y-connector with aluminum. The molded assembly follows the factory routing from the thermostat housing to the water outlet and is shaped for the listed Ford F-150, Ford Mustang, and Lincoln Mark LT applications. Key dimensions include 1.56 in. and 1.57 in. end inside diameters, plus a 1.26 in. branch opening, supporting the specified cooling system connection points.

Common Problems This Part Can Address

• Cracked plastic Y-connector in the heater hose assembly
• Coolant leaks at the hose junction
• Heat-related deterioration of the original hose routing
• Loss of cooling system integrity at the thermostat housing or water outlet connection
• Need for a replacement hose assembly with updated connector material

Installation Notes

Install as a molded heater hose assembly following the factory routing from the thermostat housing to the water outlet. Verify hose orientation, connector alignment, and end diameters before installation. Inspect mating surfaces and adjacent cooling system components for wear or residue before reassembly.

Quality Assurance

Dorman OE FIX parts are engineered to correct known failure points in original equipment designs by updating the affected component. Part number 626-541 is built for the listed Ford and Lincoln applications and uses an aluminum Y-connector to improve the connector material at the common failure location.