Heating and Cooling› Oil and Fluid Coolers

Dieselsite

Tru-Cool 4739-1 Transmission Cooler

$155.56

SKU: D03C 4739-1

In Stock
In Stock
Ships by Jun 15
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Dieselsite 4739-1 is a transmission cooler designed to prevent overheating and extend the life of automatic transmissions. This cooler features a fin and plate design for efficient heat transfer. It has a cooling capacity of 40,000 GVW and comes with 3/8" and 1/2" fittings.

Fitment

Fitment Guaranteed

Don’t gamble
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

BrandDieselsite
Part NumberD03C 4739-1

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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