Tru-Cool Transmission Oil Cooler OC-47391 LPD47391 for Low Pressure Drop 40k GVW

This Tru-Cool Transmission Oil Cooler OC-47391 LPD47391 is designed for low pressure drop automotive applications and references part number(s) OC-47391 and LPD47391.

Product Overview

The Tru-Cool Transmission Oil Cooler OC-47391 LPD47391 is an advanced auxiliary cooling system engineered to protect vehicle transmissions from excessive heat. Utilizing a specialized low pressure drop stacked plate design, it features a cold weather passive bypass that allows highly viscous automatic transmission fluid to flow efficiently without flow restriction. This durable brazed aluminum unit delivers up to double the cooling performance of standard coolers, ensuring optimal operating temperatures under heavy towing or heavy-duty workloads.

Key Features & Performance

• Provides up to forty thousand pounds gross vehicle weight rating capacity
• Delivers forty-five thousand BTU per hour cooling efficiency
• Features unique passive cold weather bypass for optimal oil flow
• Utilizes durable brazed aluminum stacked plate construction
• Maintains stable transmission fluid viscosity under stressful driving conditions

Fitment & Compatibility

• for Tru-Cool auxiliary cooler configurations
• for vehicle setups requiring standard three-eighths inverted flare hex fittings

Common Uses

• Preventing transmission fluid overheating during heavy towing and racing
• Extending the operational life of automotive gearboxes and lubricants
• Upgrading factory cooling units on modern fleet and utility trucks

Technical Specifications

• Product Type: Transmission Oil Cooler
• Part Number(s): OC-47391, LPD47391
• Brand Compatibility: for Tru-Cool
• Application: Low Pressure Drop 40k GVW

Frequently Asked Questions

Q: How do I verify if this transmission cooler fits my specific truck? A: You should verify your existing plumbing space, line sizes, and fitting types to confirm compatibility with the three-eighths inverted flare hex connection before purchase.

Q: What is the main benefit of the low pressure drop technology? A: The system features a cold weather bypass that routes thicker, cold fluid through the top of the system while directing hot, thin fluid through the core for maximized heat transfer.