Drivetrain Automatic Transmissions and Components

Sun Coast Converters

Suncoast ALLISON CAT 1 500 HP TRANSMISSION 2004-2005 2WD (WITHOUT CONVERTER) GMAX-CAT1-LLY-0405-2WD-LC $2000 Core Charge Applies

$9,948.34

SKU: S02K GMAX-CAT3-LLY-0405-2WD-LC

In Stock
In Stock
Ships by Jun 20
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Complete transmission and converter replacement designed to handle increased horsepower and torque levels, addressing known factory design flaws. Includes custom clutch packs, steels, billet plates, an overhaul kit, recalibrated valve body, gasket kit, filters, new internal wiring harness, billet input shaft, billet flexplate, billet P2 planet, billet C2 clutch hub, and a SunCoast Triple Disc Billet Converter. Flexplate is SFI certified to 29.3. Input shaft is constructed from 9310 Vacumelt steel. C2 clutch hub is made from 4140 heat treated stress relieved steel. P2 planet is made from 4140 billet steel that undergoes induction hardening. Features custom apply plate, smart trim/clutch control valve, and components to improve C2 clutch piston durability.

Fitment

Fitment Guaranteed

Don’t gamble
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 GMAX-CAT3-LLY-0405-2WD-LC

Videos

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.

View Full Return Policy