Automatic Transmission Oil Cooler LPD47391 Low Pressure for Max Heavy Duty 40K

Automatic Transmission Oil Cooler LPD47391 for Max Heavy Duty 40K

This low pressure automatic transmission oil cooler, referenced as LPD47391, helps regulate transmission fluid temperature on heavy duty Max 40K applications so the gearbox stays within its safe operating range under load.

Overview

The automatic transmission oil cooler LPD47391 is a low pressure fluid cooling unit intended to shed heat from transmission fluid before it returns to the gearbox. It suits heavy duty Max 40K setups where sustained torque loads raise fluid temperatures quickly. This transmission oil cooler is a practical replacement for a clogged or leaking original unit on work vehicles that see constant use.

Built For Performance

• Low pressure design matched to the LPD47391 reference for consistent fluid flow
• Cooling core built to handle sustained heavy duty transmission heat loads
• Designed for Max Heavy Duty 40K applications where fluid temperature control matters
• Direct replacement footprint for simpler installation during service
• Construction suited to constant duty cycles rather than light intermittent use

On-The-Job Use

• Heavy duty trucks running continuous haul or load cycles
• Max 40K drivetrain service and transmission fluid temperature management
• Fleet maintenance where transmission overheating shortens fluid and clutch life
• Replacement of a failed or restricted original transmission cooler

Specs At A Glance

Good To Know

Q: What does a low pressure transmission oil cooler do? A: It removes heat from automatic transmission fluid before the fluid returns to the gearbox, keeping operating temperatures in a safer range. A restricted or leaking cooler can lead to overheated fluid and rough shifting.

Q: Should the cooler be matched to the transmission it serves? A: Yes, flow rate and pressure rating should match the transmission it cools, which is why the LPD47391 reference matters here. Confirm your unit matches before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.