Heavy loads and towing are no match for a 1999–2003 Ford 7.3L Powerstroke equipped with the Mishimoto MMTC-F2D-99SL Transmission Cooler Kit.

The factory 9-row transmission cooler on these trucks often runs hot when towing, hauling, or driving in warm climates. Elevated transmission fluid temperatures accelerate wear on the 4R100 automatic and can lead to costly repairs. The Mishimoto upgrade solves this with a massive 37-row stacked-plate cooler that dramatically increases cooling capacity.

This direct-fit kit increases core volume by 265% and adds 1.0 quart of fluid capacity compared to stock. Independent testing confirms a reliable 10°F+ (5.6°C) drop in transmission fluid temperature with no added pressure drop. Your transmission runs cooler, shifts better, and lasts longer — whether you’re daily driving, working, or towing heavy.

Installation is straightforward with no cutting, welding, or major modifications required. The kit includes high-pressure transmission lines, worm gear clamps, and all mounting hardware for a clean, professional install that works with all stock equipment.

Backed by Mishimoto’s Limited Lifetime Warranty, the MMTC-F2D-99SL is the perfect cooling upgrade for any 7.3 Powerstroke that sees real work.

Key Features

• Direct-fit design for 1999–2003 Ford 7.3L Powerstroke (F-250, F-350 & Excursion)
• 37-row stacked-plate cooler with 265% more core volume than the factory 9-row unit
• Proven 10°F+ drop in transmission fluid temperature
• +1.0 quart increased fluid capacity
• No modifications required — works with all stock components
• Includes high-pressure transmission lines with adapters
• Durable 6061 aluminum construction
• Mishimoto Limited Lifetime Warranty

Kit Includes

• (1) Mishimoto 37-row Stacked-Plate Transmission Cooler (Silver)
• (2) High-Pressure Transmission Lines
• (4) Worm Gear Clamps
• Mounting Hardware & Brackets
• Installation Instructions

Technical Specifications

• Core Size: 25.25" L × 16.13" H × 1.25" Thick
• Overall Dimensions: Approx. 34" L × 23.5" H × 1.34" W
• Material: 6061 Aluminum
• Inlet / Outlet: ½" (13 mm)
• Rows: 37
• Core Volume Increase: 265%
• Fluid Capacity Increase: +1.0 qt

Vehicle Fitment

Fits: 1999–2003 Ford Super Duty F-250 / F-350 and Excursion with 7.3L Powerstroke

Important Notes

• Vehicles equipped with a high-mounted power steering cooler will require relocating the power steering cooler to the lower mounting position.
• May not be a direct fit on trucks built before December 8, 1998 due to additional frame bracing.