This great-looking Rotary-Design Alternator Pulley is manufactured to suit all early model Mazda's with 15mm shaft. Can be altered to suit later model Mazda alternators (17mm shaft), Made from quality 6061-6T alloy, these twin-belt alternators look great and are well built. These popular Rotary design alternator pulleys are available in a range of colours with the rotor shape on the front of the pulley being machined to highlight the rotor emble.