RADHLBNIU Transmission Oil Cooler Kit LPD47391 40k – Brazed‑Aluminum Core, Universal Mount for Vans, Trucks & RVs

RADHLBNIU LPD47391 40k Transmission Oil Cooler Kit is a heavy‑duty brazed‑aluminum auxiliary cooler designed to lower transmission temperatures for vans, light trucks, RVs and towing applications.

If your vehicle spends time towing, climbing grades, or hauling heavy loads, an auxiliary transmission cooler helps protect the gearbox by reducing operating temperature and heat soak. The LPD47391 40k kit combines a robust brazed‑aluminum core, precise fin spacing and corrosion‑resistant finishes to provide a reliable add‑on cooling solution. It ships complete with mounting and plumbing hardware; professional installation is recommended to ensure proper flow and secure connections.

How will this cooler affect my transmission temperatures?

Installing the 40k cooler increases heat dissipation surface area and improves oil circulation, which lowers peak transmission temperatures during demanding use. This helps the transmission run closer to its intended operating range under load, reducing thermal stress on seals and fluid.

• Brazed‑aluminum core for rapid heat transfer.
• Optimized fin spacing to maximize airflow and cooling efficiency.
• Direct plumbing to the transmission circuit for quicker oil turnover.

Will the LPD47391 kit fit my van, light truck, or RV?

The kit is specified as a 40k capacity cooler compatible with many cars, vans, light trucks and recreational vehicles commonly used for towing. Before ordering, confirm that LPD47391 matches your vehicle’s auxiliary cooler requirements and available mounting locations.

• Replace part number: LPD47391 — verify fitment first.
• Universal mounting hardware included for adaptable installation.
• Intended for vehicles frequently towing or operating under heavy loads.

What are the construction and durability features?

The cooler uses a durable brazed‑aluminum structure that combines strength with efficient thermal conductivity. It has corrosion‑resistant surfaces and is rated for high‑temperature environments typical of transmission service.

• Brazed core provides leak‑resistant brazed joints and structural rigidity.
• Corrosion‑resistant finish extends life in road and towing conditions.
• Designed for high temperature resistance and long service intervals.

What comes in the package and how difficult is installation?

The LPD47391 40k kit arrives with all parts needed to mount and plumb the cooler to your vehicle’s transmission circuit. While hardware is included, professional installation is recommended to ensure correct routing, secure fittings and proper torque to avoid leaks.

• Complete mounting brackets, hoses/adapters and fasteners included.
• Brand new unit—never refurbished—ready for installation.
• Professional installation advised for reliable, long‑term operation.

Who this is for: The RADHLBNIU LPD47391 40k Transmission Oil Cooler Kit is aimed at owners of vans, light trucks and RVs who tow, carry heavy payloads, or operate in hot climates and need an auxiliary solution to help control transmission temperatures. If you want a durable, aftermarket cooler built from brazed aluminum with included hardware, and you can confirm the LPD47391 model fits your vehicle, this kit offers a practical upgrade to support heavier duty use.