Sale

Heating and Cooling Oil and Fluid Coolers

Mishimoto

Performance Transmission Cooler

$440.00 $399.95 Save $40.05

SKU: MMTC-GMT-99-MM

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Mishimoto performance transmission cooler is designed for 1999-2013 Chevrolet Silverado and GMC Sierra trucks with 4LXX or 6L80 transmissions. It features a stacked-plate core with internal and external louvered fins for maximum heat transfer.

This cooler offers a significant increase in cooling capacity with a 521% larger core volume and a 278% increase in frontal surface area compared to stock. It includes -6ORB quick-disconnect fittings that can be swapped for -6AN fittings, and comes with an adjustable mounting bracket and an ambient air temperature sensor relocation bracket for easier installation.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMishimoto
Part NumberMMTC-GMT-99-MM
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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