Tru-Cool Max 40,000 GVW Transmission Oil Cooler Low Pressure Drop OC-4739-1 LPD 47391 LPD47391 OC47391 LPD-4739-1

Tru-Cool Max 40,000 GVW Heavy-Duty Transmission Oil Cooler

Improve automatic transmission cooling performance with this Tru-Cool Max heavy-duty auxiliary transmission oil cooler. Designed for demanding driving conditions, the Low Pressure Drop (LPD) design helps promote efficient transmission-fluid circulation while reducing operating temperatures during towing, hauling, commercial use, and other high-load applications.

Compatible Vehicle Types:
- Cars with automatic transmissions
- Pickup trucks
- Chevrolet/GMC 1500, 2500 and 3500-class trucks where dimensions and connections are suitable
- SUVs
- Vans
- RVs and motorhomes
- Towing vehicles
- Heavy-duty and performance applications

Product Specifications:
- GVW Rating: Up to 40,000 lbs
- Cooling Capacity: Approximately 45,000 BTU
- Cooler Size: Approximately 8.5 x 22 x 1.25 inches
- Design: Low Pressure Drop (LPD)
- Connection Type: 3/8-inch inverted flare
- Thread Size: 5/8-18 UNF-2B
- Application: Auxiliary automatic transmission cooling

Key Features:
- Low Pressure Drop design supports efficient transmission-fluid circulation
- Helps reduce transmission operating temperatures
- Designed for towing, hauling, heavy-duty, and performance applications
- Durable construction for demanding use
- Large cooling surface helps improve heat dissipation
- Suitable as an auxiliary transmission cooler when properly installed

Compatible Part Numbers:
OC-4739-1, LPD-4739-1, 47391, LPD47391, OC47391, LPD-47391

Package Includes:
- 1 x Transmission Oil Cooler
- Transmission Cooler Hose
- Mounting Brackets
- Fittings
- Clamps
- Mounting Hardware

Important Information:
This is a universal-style auxiliary transmission oil cooler and is not a vehicle-specific direct replacement. Compatibility depends on available mounting space, transmission cooler-line configuration, fittings, and installation requirements. Additional fittings, adapters, or modifications may be required for some applications. Please verify cooler dimensions, available mounting space, transmission line size, fittings, and part-number compatibility before purchasing. Professional installation is recommended.

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