Drivetrain Automatic Transmissions and Components

Sun Coast Converters

35 SPLINE SOLID BILLET INPUT SHAFT

$2,057.39

SKU: S02K SC-22121B-08K

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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

The Sonnax Smart-Tech® Big Input Shaft Kit is an extreme-duty solution designed to prevent input shaft spline twist and breakage in high-torque Chrysler 47RH, 47RE, and 48RE diesel applications. This kit is 35% stronger than 300M 23-spline shafts at both the spline and sealing ring/cross-hole areas, addressing common failure points.

Fitment

Fitment Guaranteed

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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 SC-22121B-08K

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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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