Drivetrain› Automatic Transmissions and Components
ATK ENGINES
GM RWD 6L90 6SPD TRANS
SKU: A040 8224A-JMBF
Advanced — 4+ hours
Description
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
| Brand | ATK ENGINES |
| Part Number | A040 8224A-JMBF |
Videos
This is a MUST DO when rebuilding a 6L80-6L90 transmission!!!
GM 6L80 & 6L90 Transmission Upgrade Options for the 4-5-6 Clutch
How We Fix GM Transmission Failure (6L80 & 6L90)
6L80 & 6L90 the WORST 6-Speeds? | Common 6L80 & 6L90 Problems that lead to DESTRUCTION!
Building it back better that’s the key!!! 6L90-6L80 Tons of upgrades for these units use them.
6L90 Torque Converter Install in an 6L80 Transmission - Silverado Sierra Tahoe Suburban Yukon
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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