Alternator Pulley. We are an authorised distributor for Borg & Beck parts. Equivalent to Part Numbers: OE: 6111550715, 6111550515, 6111550315 BLUE PRI…. If you order before 12PM we'll dispatch same day from our UK warehouse. For guaranteed next day delivery please select this option at checkout. This product comes with free 365-day no quibble returns (UK only).