The Mishimoto MMHOSE-F250D-99BK is a black silicone radiator hose kit for a 1999–2000 7.3 Powerstroke, built before April 26, 2001. It is the same kit as the blue MMHOSE-F250D-99BL and the red MMHOSE-F250D-99RD. Later trucks use a different hose set. The factory upper hose is XC3Z-8260-DA.

Two silicone hoses are in the kit. They are rated to about 330 degrees. The factory rubber gets soft and splits at the radiator neck. These hold shape. The warranty is lifetime. Clamps are the factory pieces if they are not rusted. A dual-radiator truck uses a different upper hose.

It fits 1999–2000 Super Duty 7.3 trucks built before April 26, 2001.

Fitment

• 1999–2000 Ford 7.3L Powerstroke
• Built before April 26, 2001
• Black silicone
• Two hoses
• Rated to about 330 degrees
• Lifetime warranty

Match the build date on the door sticker. A later hose will not sit on an early neck. Bleed the system after the hoses are on.