At WOSP we offer an ever-growing, wide range of pulleys. Therefore to help you easily find what you need, the pulleys are seperated by type and their groove size & bore diameter .

Please bear in mind:

The majority of the world’s alternators have either 15mm or 17mm shafts. Therefore all of our pulleys have been separated to differentiate for this. Please follow suit to save us having to ask which bore size is required. A sleeve is available in our alternator spares to reduce a 17mm bore down to 15mm, but it is not advised.

V type (wedge) belts are not designed for more than 100-120A. If the customer requires an alternator which is over 100-120A output then special attention needs to be made to ensure sufficient belt wrap (contact area), or be advised that belt slip is likely.

The majority of our aluminum pulleys come hard anodized black as standard for longer life, because pulleys wear / have a service life, particularly when aluminum.