Vehicles with Aisin AW 450-43LE transmission may exhibit TCC apply and release problems, burnt converters and damage and loss of TCC friction lining. Wear is commonly found at different areas in the lockup control valve bore. Wear at the lockup control valve bore prevents the valve from stroking to the lockup position. Wear at the lockup plunger sleeve causes lower TCC apply and release pressures. Sonnax oversized lockup control valve and cutback valve kit 94987-05K restores hydraulic integrity to properly control the apply and release of the torque converter. The material for the valves has been upgraded from OE steel to hard-coat anodized aluminum. The precision sleeves are manufactured from highly wear resistant aluminum.

Valves are hardcoat anodized to reduce wear
Sleeves are manufactured from highly wear-resistant aluminum
Kit is compatible with both square and pin style retainers

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