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Efficient Cooling for Heavy-Duty Vehicles
The LPD47391 40k Transmission Oil Cooler Kit is engineered to deliver superior cooling performance for vehicles with a maximum gross vehicle weight (GVW) of 40,000 pounds. Whether you're driving a large commercial truck, towing a trailer, or operating a heavy-duty SUV, this transmission cooler is designed to help maintain optimal performance by keeping transmission temperatures in check. Ideal for towing and long-distance travel, the cooler enhances vehicle efficiency and reliability, especially during high-stress operations.
Low Pressure Drop Design for Maximum Efficiency
One of the standout features of this transmission cooler is its advanced low-pressure drop technology. By minimizing pressure loss as the oil flows through the cooler, it reduces energy consumption while maintaining optimal transmission function. This helps protect your vehicle’s critical components from overheating, ensuring smoother gear shifts and prolonged transmission life. The low-pressure design also helps save fuel, making this cooler a valuable upgrade for those looking to increase their vehicle’s efficiency.
Complete Mounting Kit Included
Installation is made easy with the included mounting hardware. The LPD47391 kit comes with high-quality bolts, fasteners, and brackets that are designed to fit a wide range of heavy-duty vehicles. Whether you are a professional mechanic or a DIY enthusiast, the straightforward installation process ensures a stable, secure fit. This means you can quickly install the cooler and get back on the road with confidence.
Advanced Cooling Technology for Long-Term Protection
With advanced cooling technology, this transmission oil cooler not only maintains a steady operating temperature but also significantly extends the life of your transmission. By efficiently dissipating heat, the cooler helps prevent potential damage caused by overheating, reduces the likelihood of maintenance issues, and ensures your vehicle performs at its best.
Whether you’re towing heavy loads, driving through rough terrain, or dealing with hot climates, this cooler keeps your vehicle running smoothly. Whether you’re looking for enhanced transmission cooling for everyday driving or need a reliable solution for long hauls and towing, the LPD47391 40k Transmission Oil Cooler Kit provides unmatched performance, longevity, and peace of mind. Upgrade your vehicle’s cooling system today and ensure your transmission stays protected in even the most demanding conditions.

Specifications:
Cooling fins area measures 8.5” x 22” x 1.25” thick
Suitable for applications up to 40,000lbs Gross Vehicle Weight
NOTE: This kit is NOT intended for operation below 32 degrees Fahrenheit
High Flow 3/8" Inverted Flair Hex fittings
Plate-style cooler outperforms old tube-and-fin designs in a smaller overall size
Delivers up to 15X less flow restriction
30% more cooling delivers maximum heat transfer
Durable brazed aluminum construction
Self-regulating flow for maximum lube flow protection through cold start-up, varied temperatures and driving conditions, heavy loads and towing

This kit includes:
Mounting hardware – Bolts, nuts, washers and steel mounting straps
Brass fittings, high-quality cooler hose, and hose clamps

Pls Note:
(1)It would be highly appreciated if you might contact us first once you have any problems concerning the items. And you can expect all the issues would be resolved ASAP!
(2) Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item
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| Items Included | Bolts, nuts, washers and steel mounting straps |
|---|---|
| Manufacturer Part Number | LPD47391 |
| GVW | 40,000,40k |
| Drive Type | 4WD,AWD,RWD |
| Material | Aluminum |
| Superseded Part Number | OC-47391-1 |
| Placement on Vehicle | Front |
| Suitable for | Applications up to 40,000lbs Gross Vehicle Weight |
| Brand | speedyautopartsusa |
| Type | Transmission Filter Oil Cooler |
| Attention: | No installation instructions |
| Interchange Part Number | 47391, LPD 47391, LPD47391, OC-4739-1 |
| Universal Fitment | No |
| OE/OEM Part Number | LPD 47391 |
| Performance Part | Yes |
