Drivetrain› Automatic Transmissions and Components
Sun Coast Converters
Suncoast 4L80E Smart-Tech Overrun Clutch Valve Kit SUN34200-40K
SKU: S02K 34200-40K
Moderate — 2–4 hours
Description
This patented kit installs quickly onto the valve body without requiring transmission removal. It improves overdrive roller clutch holding power in D4 and Reverse ranges, helping to extend the life of hard-working transmissions.
Fitment
Fitment Guaranteed
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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 | Sun Coast Converters |
| Part Number | S02K 34200-40K |
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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