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Drivetrain› Automatic Transmissions and Components

Sun Coast

GM-1056-3D Triple Disc Torque Converter

$1,575.00 $1,495.00 Save $80.00

SKU: SCCGM-1056-3D

In Stock
In Stock
Ships by Aug 4
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Sun Coast GM-1056-3D Triple Disc Torque Converter is engineered for 2001-2010 GM 6.6L Duramax applications, serving as an excellent choice for daily driven trucks that also tow or engage in performance driving. This "journeyman" converter incorporates an OEM-style stator and a custom-modified impeller to enhance low-end torque multiplication, effectively getting your load moving, while also providing high-end efficiency to put power to the road. Featuring a triple clutch design and a robust billet cover, this torque converter is built for durability and performance. The converter has a stall speed of approximately 2000 RPM, making it suitable for a wide range of driving conditions. This torque converter is compatible with 2001-2010 GM 6.6L Duramax engines, including LB7, LLY, LBZ, and LMM engine codes. Please note that a $350.00 core charge applies to this purchase, which is refundable upon return of the old unit.

MIA's Description

The Sun Coast GM-1056-3D Triple Disc Torque Converter is designed for 2001-2010 GM 6.6L Duramax trucks, offering a balance for daily driving, towing, and racing. This "journeyman" converter features an OEM-style stator and a custom-modified impeller for improved low-end torque multiplication and high-end efficiency. It is also equipped with a triple clutch and a billet cover, and spools well with stock to medium-sized turbos.

Fitment

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Specifications

BrandSun Coast
Part NumberSCCGM-1056-3D
CategoryDrivetrain

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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