Fits 1991-94 4L80E Manual shift shafts in GM 4L80-E '91-'94 can become corroded in harsh environments. Corroded manual shift shafts are not suitable for reuse, especially in remanufacturing. This JSPP direct replacement manual shift shaft kit compatible with 38511-01K has been yellow zinc plated to maximize corrosion resistance from road salt and other environmental contaminates. The flange face of the nuts is serrated for better holding capacity. Cost effective solution to OE kit Manual shift shaft and flanged nuts are zinc plated for corrosion resistance The flange face on the nuts is serrated for better holding Note This kit does not fit units with external neutral safety switch. Contents Shaft Metric Flange Nuts (2) Seal (2)