Drivetrain› Automatic Transmissions and Components

Sun Coast Converters

Suncoast Converters Heavy Duty Input Shaft - For Use With Turbine Support Bushing 30280-02

$707.98

SKU: S02K 30280-02

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Suncoast Converters Heavy Duty Input Shaft - For Use With Turbine Support Bushing 30280-02

MIA's Description

The Sonnax 30280-02 Heavy Duty Input Shaft is designed to address common input shaft failure in performance GM TH400 transmissions running with added horsepower. This shaft is manufactured from 300M, high-strength steel with additional processing for resistance to fracture, making it ideal for street or strip applications requiring maximum durability. It is intended for use with aftermarket converters with internal turbine support and aftermarket drums with compatible 28-tooth splines.

Fitment

Fitment Guaranteed

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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.

Available on iOS & Android

Specifications

BrandSun Coast Converters
Part NumberS02K 30280-02

Videos

How to Assemble & Install the Sonnax TH400 Smart-Tech Drum Module

How to Assemble & Install the Sonnax TH400 Smart-Tech Drum Module
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Improve TH400 Performance, Consistency & Safety with the Sonnax Smart-Tech Drum Module (34555-01K)
TH400: How To Recipe for 800-1000HP

TH400: How To Recipe for 800-1000HP
Quick Transmission upgrade TH400

Quick Transmission upgrade TH400

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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