Most popular sizes of viscous fan clutch hex couplings are either 36 mm or 48 mm
This double ended wrench was developed to reduce the cost of purchasing two wrenches, which are needed when performing a variety of fan clutch jobs
When the MST9521 is used with MST6160, most Chrysler, Ford, GM & Land Rover applications can be performed on vehicles that have bolt on water pump pulleys
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