What is a Stage 5 transmission package?

A Stage 5 package represents a significant upgrade over stock. It includes a fully remanufactured transmission with stronger internal parts, a high-stall torque converter, and an electronic controller for custom tuning. It's built for vehicles with modified engines and heavy-duty use.

Does this transmission package include the Co-Pilot controller?

Yes, the ATS Diesel Stage 5 Transmission Package includes the Co-Pilot electronic transmission controller. This unit allows you to adjust shift points and line pressure on the fly to match your driving needs.

What is the benefit of a high-stall torque converter?

A high-stall torque converter allows the engine to reach a higher RPM before the torque converter fully locks up. This helps transfer more power to the drivetrain, especially beneficial for modified diesel engines and heavy towing applications.

ATS Diesel 1989-1991 Ford 4wd E4OD Stage 5 Transmission Package

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ATS Diesel

ATS Diesel 1989-1991 Ford 4wd E4OD Stage 5 Transmission Package

Name: ATS Diesel 1989-1991 Ford 4wd E4OD Stage 5 Transmission Package
Brand: ATS Diesel
Price: 9178.61 USD
Availability: InStock

$9178.61

ATS Diesel 1989-1991 Ford 4wd E4OD Stage 5 Transmission Package. Built for heavy towing and high-performance use.

Key Features

Complete transmission rebuild — ready to install.
Co-Pilot electronic controller — allows for custom tuning of shift points and line pressure.
High-stall torque converter — designed for improved power transfer with modified engines.
Updated internal components — stronger parts for increased durability.
Built for heavy towing and high-performance applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Will this fit your vehicle?

Compatible with 58 vehicles

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Product Details

Already running a high-performance diesel engine? This Stage 5 E4OD transmission package from ATS Diesel is the next piece to handle the power. It's built to handle serious towing and demanding use, far beyond what a stock transmission can manage. This package is designed for 1989-1991 Ford 4WD trucks with the E4OD transmission.

The Stage 5 package includes a completely remanufactured E4OD transmission, a Co-Pilot electronic transmission controller, and a high-stall torque converter. ATS Diesel uses updated internal components and stronger clutches to ensure reliability under load. The Co-Pilot controller allows for on-the-fly adjustments to shift points and line pressure, giving you control over how the transmission behaves.