Drivetrain› Automatic Transmissions and Components

Sun Coast Converters

Suncoast Enhanced Performance Accumulator Spring SUNSC-77704S

$39.00

SKU: S02K SC-77704S

In Stock
In Stock
Ships by Jun 14
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Sun Coast Converters SC-77704S is an enhanced performance accumulator spring designed for GM 200-4R, 4L60, and 4L60-E series transmissions. This Sonnax spring provides firmer 1-2 shifts for a quick, positive shift feel. It achieves this without reducing accumulator piston travel, resulting in a firmer yet cushioned shift that minimizes stress on the band and shafts.

Fitment

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

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Specifications

BrandSun Coast Converters
Part NumberS02K SC-77704S

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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