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Drivetrain› Automatic Transmissions and Components

Sun Coast Converters

Suncoast CATEGORY 1 4R70W BILLET TORQUE CONVERTER 3 000-3 200 RPM SUN4R70W-4

$1,395.00 $1,353.15 Save $41.85

SKU: S02K 4R70W-4

In Stock
In Stock
Ships by Jun 19
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The SunCoast Performance 4R70W/4R75W Category 2 Rebuild Kit offers a comprehensive upgrade for Ford automatic transmissions. It includes a heavy-duty intermediate shaft, Smart Tech forward clutch drum, Sonnax Zip Kit, and a new torque converter, designed to enhance shift feel, withstand high horsepower, and provide greater torque holding capacity. This kit is made in the USA.

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

BrandSun Coast Converters
Part NumberS02K 4R70W-4

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.

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