Drivetrain› Automatic Transmissions and Components

ATK ENGINES

GM 8L90 5.3 4WD AUTO TRANS

$5,680.56

SKU: A040 T9721AA

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

Moderate — 2–4 hours

Description

Our remanufactured transmissions have improved torque converters included with every transmission to eliminate the possibility of front seal leaks, vibration or premature bushing wear, All torque converters are tested for leaks, lock-up, concentricity and balance. Every fully remanufactured valve body, with complete system correction and recalibration kit, is tested independently and includes updated throttle valve, manual valve, 4-spool switch valve, pressure regulator valve and governor plugs for improved shifting, lubrication and performance. All wear-prone valves are restored to stringent specifications and vacuum tested to confirm proper function. Each remanufactured transmission is hot, cold, load and simulated road testing.

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

BrandATK ENGINES
Part NumberA040 T9721AA

Videos

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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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