#62W. Fits 4L80E and TH400. Sonnax forward clutch hub thrust washer 34298-078 is .015″ thicker than the OEM version and replaces the OEM .063″ thick washer between the forward clutch hub and the forward drum. This allows front unit endplay to be reduced. – – – – The new .030″ thicker 34301-094 thrust washer is an alternative to the OEM washer. Shimming at this location maintains the relationship with the forward clutch hub and direct drum and does not alter the endplay path through the unit. Cost is for one thrust washer.