7900 Fisher Pump Mate Belt Drive Pulley Under Hood 4-3/4" Diamond

This is a Fisher 7900 PumpMate.

This allows you to remove a bolt to let the pulley free spin on the pump so that it is not turning the pump when you are not plowing. With the price of these pumps and the fact that they are getting harder to find, it is a good idea to use one.

This will fit both Fisher and Diamond plow pumps. It replaces the Fisher Pump Sheave 3696 for the under hood belt drive pumps. This fits pumps A2311, A5075, 21981 and 8356.

This is an under-the-hood V belt pulley. Measures 4-3/4 end to end and the center is a 1/2 hole with a key groove. They also offer a 6" version (# 7945) and a 3-3/4" version (#7946.) 

Replaces Diamond part # 8160000-169. This is also made to slide on the 816000-164 pump.

This is made up of 7896, 7895 Retaining Ring, 7893 Bearing, 7894 Sheave, 7898 Hub and 7910 Tool Kit. 

Here is a link to the instructions