ATS Diesel

E4OD Transmission Package Stage 1

$5,184.99

SKU: 309-912-3104

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The ATS Diesel Performance E4OD Transmission Package is a robust upgrade engineered to address common failure points in the Ford E4OD transmission, particularly when paired with the torque demands of diesel engines. This Stage 1 package is specifically designed for 1989-1991 Ford F-250 and F-350 trucks equipped with Power Stroke diesel engines and the E4OD transmission, in 2WD configurations. This transmission package includes a high-performance Five Star Torque Converter with a billet cover and five lock-up clutches, available in low or high stall configurations. It also features upgraded clutch packs with an additional clutch in the overdrive, intermediate, and forward sections. To ensure optimal performance, the transmission pump is modified to increase line pressure for greater clamping force on the clutch packs, and the valve body is recalibrated for precise shifts and increased torque capacity. The package is completed with new bearings, seals, gaskets, a low roller clutch, heavy-duty intermediate sprag, bonded coast and overdrive pistons, and an ATS Deep Transmission Pan that adds five quarts of fluid to help manage temperatures. The Stage 1 Package is recommended for trucks engaged in light towing, daily driving, and those with stock or mild performance modifications. It comes with a comprehensive 3-year/300,000-mile warranty, providing significant peace of mind for owners.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandATS Diesel
Part Number309-912-3104
CategoryDrivetrain
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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