Sonnax 34006-SPB Heavy Duty Case Bushing Upgrade Kit fits 400, 4L80E and 4L85E Featured Products In the genuine box as

In the genuine box as received from Mopar

This can result in harsh or soft shifts and band/clutch failure as well as other driveability concerns

Direct clutch failure

Fits '07-later

Sonnax 34006-SPB Heavy Duty Case Bushing Upgrade Kit fits 400, 4L80E and 4L85E Featured Products In the genuine box asBrand: Sonnax Interchange Part Number: 34064BAK Items Included: Heavy Duty No Walk Case Bushing, Thrust Bearing. Shim Kit Manufacturer Part Number: 34006 SBP Universal Fitment: Yes Performance Part: Yes TH400, 4L80 E, 4L85 E Transmission Upgrade Heavy Duty Case Bushing Kit Part No. 34006 SPB Case bushing walkout and thrust washer wear are common issues in the GM 400, 4L80 E and 4L85 E units. Sonnax heavy duty case bushing kit 34006 SPB combines the