Heating and Cooling› Oil and Fluid Coolers

C.ROTO MOLDG

OUTBACK

$401.24

SKU: C05W H-678

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Hayden 678 Rapid-Cool Transmission Oil Cooler, also known as the Tru-Cool 40k or LPD 40K, is a heavy-duty, universal-fit transmission oil cooler. It features a durable plate and fin design, rated for vehicles with a Gross Vehicle Weight (GVW) up to 24,000 lbs. This cooler is specifically designed for applications involving towing, heavy-duty use, or environments where increased transmission cooling is critical to prevent overheating and extend transmission life. Installation typically requires available space for mounting and adaptation of transmission fluid lines, often using a universal mounting kit included with the product.

Fitment

Fitment Guaranteed

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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

BrandC.ROTO MOLDG
Part NumberC05W H-678

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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