Mishimoto 7.3L Upper Coolant Hose Reroute Kit 99-01 F250

Upper coolant hose reroute kit for the 1999–2001 Ford 7.3L Powerstroke, the Mishimoto 7.3L Upper Coolant Hose Reroute Kit 99-01 F250 streamlines serpentine-belt service by removing the factory upper radiator hose from the belt path, reducing coolant loss and service time.

This reroute kit addresses a specific serviceability and reliability issue on the 7.3L Powerstroke: Ford’s factory routing snakes the upper radiator hose through the serpentine area, requiring coolant draining, refilling, and bleeding whenever the belt is changed. By changing the hose path, the Mishimoto solution reduces the need to disturb the cooling system during routine belt maintenance, helping maintain coolant integrity and shorten service intervals.

Key functional benefits

• Reroutes the upper radiator hose — keeps the hose out of the serpentine/belt area so belt replacement can be completed with minimal impact to the cooling system.
• Minimizes coolant handling — reduces the frequency of draining and refilling the cooling system during accessory service, lowering the risk of air introduction and contamination.
• Improves service efficiency — simplifies routine maintenance tasks on 1999–2001 F250 7.3L Powerstroke trucks by shortening the belt-change procedure.

Design intent and application

This kit is purpose-designed for the 7.3L Powerstroke used in 1999–2001 Ford F250 applications, addressing the factory routing that complicates serpentine belt service. The Mishimoto approach focuses on practical, service-oriented value: maintain coolant system integrity while enabling faster, cleaner belt and accessory maintenance operations.

Contents:

Brand note: Mishimoto names this kit to reflect its focus on cooling-system solutions and practical performance support for diesel truck maintenance.