Late 722.6 valve bodies added a TCC damper valve at a previously vacant bore in the casting. This damper valve acts like an accumulator for the converter clutch. If there is leakage due to bore wear, signal leak to exhaust, resulting in harsh TCC apply and lock-up. The highly wear-resistant sleeve incorporates o-rings to seal against previous bore wear, without the need to ream the bore. Annular grooves have been added to the valve to better center the valve and prevent wear. No machining required. and High Quality Product Name: TCC Damper Valve & Sleeve Kit Part Number: 68942-23K Placement on Vehicle:Front : 1 Set Symptoms: Harsh lockup : Wear at the TCC damper valve bore allows signal pressure to leak, resulting in harsh TCC apply. Correction: -in-place improved TCC damper valve kit restores hydraulic sealing. Material: Metal colour: silver Package Contents: 1 x Damper Valve Sleeve Kit Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.