Piston / Toyota U140 / U140e / U140f / U150 / U150e / U151 / U151e / Underdrive (inner) (oem# 34205-21010)

Underdrive Inner Piston for Toyota U140, U150, U151 Transmissions

Restore proper clutch apply and shift performance in your Toyota automatic transmission with this Underdrive (inner) Piston, OEM reference 34205-21010. Manufactured by Atk, this direct-fit replacement piston is engineered for the U140, U140E, U140F, U150, U150E, U151, and U151E units found in a wide range of Toyota vehicles. Whether you are rebuilding a worn transmission or replacing a damaged piston during routine service, this component delivers dependable sealing and consistent hydraulic response.

Key Features

• Direct replacement for OEM part number 34205-21010
• Fits Toyota U140, U140E, U140F, U150, U150E, U151, and U151E transmissions
• Underdrive (inner) piston design for correct clutch apply and release
• Manufactured by Atk to strict dimensional tolerances
• Ideal for rebuilds, repairs, and preventative maintenance

Compatibility

This underdrive inner piston is compatible with Toyota vehicles equipped with U140, U140E, U140F, U150, U150E, U151, and U151E automatic transmissions. Please verify your transmission code and OEM part number before ordering to ensure correct fitment.

Why Choose This Part?

Atk is a trusted name in transmission components, and this piston is built to match OEM specifications for fit and function. If you are servicing a Toyota U140 or U150 series transmission, this is the reliable choice for restoring smooth, positive clutch engagement. Order now and get your rebuild back on the road with confidence.