Drivetrain Automatic Transmissions and Components

Sun Coast Converters

Suncoast L5P BILLET INPUT SHAFT A1-BIS-L5P $100 Core Charge Applies

$256.00

SKU: S02K A1-P1B-6

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Suncoast L5P BILLET INPUT SHAFT A1-BIS-L5P $100 Core Charge Applies

MIA's Description

The SunCoast A1-P1B-6 Modified P1 Sun Gear is an internal transmission component designed to reinforce the Allison 1000 transmission in 2001-2010 GM Silverado and Sierra HD trucks with the 6.6L Duramax engine. Made from heat-treated steel and precision-machined, this upgraded sun gear increases torque capacity, improves gear engagement and durability, and reduces internal stress. It is ideal for tuned trucks or those used for heavy-duty work, enhancing overall transmission reliability.

Fitment

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Specifications

BrandSun Coast Converters
Part NumberS02K A1-P1B-6

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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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