Mishimoto Universal 13-Row Stacked-Plate Transmission Cooler Kit — 1.25" Thin Core, 40,000 GVW

The Mishimoto MMTC-SP-13N is a universal 13-row stacked-plate transmission cooler kit engineered to lower fluid temperatures for heavy-duty towing, off-road use, and high‑performance driving.

If your vehicle spends time hauling trailers, tackling trails, or being pushed on the track, factory transmission cooling can be insufficient. This Mishimoto kit pairs a compact, high-surface-area stacked-plate core with a complete installation package—hose, fittings, clamps, and brackets—so you get a durable, leak-resistant upgrade that fits a wide range of cars, trucks, and SUVs. The core measures 22.85" x 7.10" x 1.25" and the assembly is rated up to 40,000 GVW for heavy-duty applications.

How does the stacked-plate core keep transmission fluid cooler?

The 13-row stacked-plate design increases contact surface area between the fluid and ambient air while maintaining a low pressure drop. That combination allows more heat to transfer away from the fluid without restricting flow, which helps the transmission operate in its intended temperature window under sustained load.

• 13 compact rows for high surface-area-to-volume ratio
• Low pressure loss preserves fluid circulation and pump efficiency
• Shallow 1.25" thickness for flexible mounting options

What’s included and how does it prevent leaks?

The kit arrives with all parts needed for a typical installation: 50" of SAE J1532-rated cooler hose, adapter fittings, clamps, unions, and mounting brackets. Mishimoto’s precision-machined adapters feature integrated O-rings for a sealed connection that reduces seepage risks common with basic barb or compression fittings.

• 50" SAE J1532 spiral-reinforced cooler hose for pressure durability
• 3/4"-16 to 3/8" adapter fittings with O-ring sealing
• Stainless-steel worm-gear clamps and 3/8" unions included

Will this fit my vehicle and fluid type?

The MMTC-SP-13N is designed as a universal solution for many platforms and supports automatic transmission fluid, power steering fluid, engine oil, and similar automotive fluids. Its compact dimensions and included universal brackets simplify mounting in front-mounted or radiator-adjacent locations on trucks and performance cars.

• Universal mounting brackets accommodate multiple chassis layouts
• Compatible with ATF, power steering fluid, and engine oil
• 40,000 GVW rating suits heavy tow rigs and off-road trucks

How durable and serviceable is the kit for demanding use?

Components are chosen for long-term reliability in harsh environments. The reinforcement in the cooler hose, stainless clamps, and O-ring sealed fittings provide pressure resistance and corrosion protection, while the stacked-plate core balances strength with thermal efficiency for repeated heavy-duty cycles.

• Spiral polyester reinforcement resists hose collapse under pressure
• Stainless-steel clamps for corrosion resistance and secure fastening
• Service-friendly hose lengths and standard fittings for easy maintenance

Who is this for: The Mishimoto MMTC-SP-13N is aimed at truck owners, off-road enthusiasts, tow vehicle operators, and performance drivers who need a compact, high-capacity transmission cooler that installs with minimal modification. If you’re regularly towing heavy loads, running sustained high transmission temperatures, or upgrading cooling for a track or off-road build, this kit provides a versatile, ready-to-install solution built for demanding conditions.