This is a valve body upgrade kit for all KM model transmissions with a four solenoid ECT's This Valve Body Upgrade Kit from TransLab Superior will work for the Diamante F4A33, W4A33, F4A22, F4A23, KM175, KM176, KM177 and all KM's. This Valve Body Upgrade Kit corrects or prevents the following problems: 2-3 flair, coast downshift clunks, OD not engaging, end clutch failure, part throttle 3-2 bang, neutrals at a stop, 4-2 neutral, slips or neutrals in 4th, slide 1-2, and 3rd gear starts. This Valve Body Upgrade Kit also provides improved cooler flow, lube, & lockup operation, converter fills in park, shorter shifts without the resulting downshift clunks, extended clutch & band life. We also offer a High Performance version of this TransLab Superior Valve Body Upgrade Kit. Please see my other listings!