Drivetrain Automatic Transmissions and Components

SunCoast

Category 1 6R140 Torque Converter

$2,744.86

SKU: SUN6R140-CAT1

In Stock
In Stock
Ships by Aug 4
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The SunCoast Category 1 6R140 Torque Converter is engineered to significantly enhance the performance and reliability of the Ford 6R140 transmission, a robust platform known for its deep first gear (3.97:1) and double overdrive. This converter boasts a range of upgrades, including a durable billet cover and furnace-brazed fin construction for superior strength. It features a new Torque Converter Clutch and custom-manipulated turbine and pump angles tailored to customer needs. The design specifically targets chronic captive clutch failures often found in stock 6R140 units. Unlike conventional converters, the clutch engages away from the front cover, mating with a steel backing plate that is typically prone to flex. SunCoast's rigid backing plate mitigates this, while the upgraded clutch assembly addresses the weak leaf springs found in OE units that can lead to component damage. This makes the Category 1 converter an ideal replacement for heavy-duty trucks used for towing and demanding work applications where reliability is paramount. Key specifications include new Torrington thrust bearing construction and precision dynamic balancing to exact tolerances. It is manufactured and tested by American workers in Fort Walton Beach, Florida. Fitment is specific to 2011-2019 Ford F250 and F350 models equipped with the 6.7L Powerstroke engine and the 6R140 transmission. A core charge applies, which is refundable upon inspection and acceptance of the OEM core by SunCoast.

MIA's Description

The SunCoast Category 1 6R140 Torque Converter is a performance upgrade for the Ford 6R140 transmission. It features a billet cover, furnace-brazed fin construction, and a new torque converter clutch. The custom turbine and pump angles, along with a rigid backing plate, enhance durability and reliability.

It utilizes a custom rigid backing plate to reduce deflection and provides a more durable reaction surface than OE components, increasing longevity. The improved clutch design and new Torrington thrust bearing construction further contribute to its robust performance.

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

BrandSunCoast
Part NumberSUN6R140-CAT1
CategoryDrivetrain

Buy with Confidence

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