Sale

Drivetrain› Automatic Transmissions and Components

ATS Diesel

Stage 1 Transmission Upgrade Kit with Torque Converter

$8,084.99 $7,699.99 Save $385.00

SKU: 309-912-3368

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The ATS Diesel 309-912-3368 is a Stage 1 transmission upgrade kit designed for 2011-2019 Ford F250/F350 Powerstroke 2WD vehicles. It includes an ATS-built 5R110 automatic transmission and a 5 Star Viskus torque converter. The kit also features an extra deep transmission pan for improved cooling and increased fluid capacity.
Show original supplier description
The ATS Diesel 309-912-3368 Stage 1 6R140 Package is a complete transmission upgrade kit engineered to enhance the performance and durability of 2011-2019 Ford F250/F350 Powerstroke 2WD trucks. This comprehensive package includes a professionally built ATS 5R110 automatic transmission, designed to handle increased torque and stress compared to stock units. It is paired with a 5 Star Viskus Clutch Drive Torque Converter, which promotes smoother engagement and firmer shifting for improved throttle response under load. Additionally, the kit features an extra deep transmission pan that not only aids in cooling but also increases fluid capacity, contributing to a longer service life for the transmission. Optimized for demanding applications such as towing, off-road use, and racing, this transmission upgrade improves power delivery and overall durability. It is specifically designed for Ford Super Duty models equipped with the 6.7L Powerstroke diesel engine and the 6R140 transmission in a 2WD configuration. The kit is engineered and built in the USA by ATS Diesel Performance and is sold as a complete bolt-in replacement solution. A $500 shipping surcharge applies at checkout.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandATS Diesel
Part Number309-912-3368
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy