Genuine BMW Idler Pulley - Multiple BMWs

Product Details

This is a Genuine BMW Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

This pulley shares its mounting bolt with the alternator, and is used for the main drive belt on the M50-family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines), and also used on the S85 V10. This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time.

This item is 80mm Diameter. Please check the diameter before ordering.

This upper idler pulley fits the following BMWs:
1991-1995 E34 525i (M50 engine)
1992-1999 E36 325i, 325is, 328i, 328is, 323is
1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter)
1997-2003 E39 525i, 528i, 530i
1999-2000 E46 323i, 323Ci, 328i, 328Ci
2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi
2001-2006 E46 M3 coupe & convertible
2000-2006 X5 3.0 liter (E53 chassis)
2006-2009 M5 & M6 V10
1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe
2003-2009 Z4 & MZ4 Z4 M Coupe, Z4 M Roadster

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