4L60E to NP205 Transfer Case Adapter

This adapter kit adapts either 2wd or 4wd late model 4L60E with removable bell housing to the GM NP205 with 10 spline male input. The adapter kit includes a two piece adapter assembly with VSS sensor, tone wheel, new short 4L60E main shaft, 27 x 10 spline coupler, oring, gasjets and fastening hardware.

The 51-0405 adapter was designed to make this style of 4L60E look just like a 700R. By incorporating a new clamp-on reluctor ring and sensor on this adapter, a 40 pulse per output shaft revolution signal is generated for the drivetrain control module. This adapter kit comes with a new clamp-on reluctor ring that should be installed on the new 700R output shaft that is also part of this kit. This clamp-on reluctor ring clamps over the stock governor gear on the 700R output shaft. We have provided two reluctor sensor locations to choose from in the adapter. The hole not being used will need to be plugged with the plug provided.

The one piece GM 700R4 output shaft used in this kit is made out of 4340 alloy steel. This output shaft is manufactured with the highest quality materials and standards as the OEM output shaft.