Home / High Performance Automotive Units / MCR HIGH PERFORMANCE ALTERNATORS / AFTERMARKET STOCK ALTERNATORS / BMW ALTERNATORS / NEW Alternator Replaces BMW 12V 180AMPS CW 12-31-7-837-981 12-31-7-838-656 LRA03300 12941 2543424 439675 440252 FG18S014

NEW Alternator Replaces BMW 12V 180AMPS CW 12-31-7-837-981 12-31-7-838-656 LRA03300 12941 2543424 439675 440252 FG18S014

**All parts are 100% brand new and meet or exceed OEM specifications.**
**Units may differ in color from listing photos and are for U.S. Models only (unless otherwise noted)**
**Fitment information below is accurate to the best of our knowledge and should be used for reference only. If you have any questions about fitment, please call our parts specialist before placing your order. For further assistance call 586-257-1515

Product Description

Description: Alternator
OEM(s): BMW
Voltage: 12
Amps: 180
Rotation: CW
Mtg Ear 1 Hole: 10.4mm Unthreaded
Mtg Ear 2 Hole: 10.4mm Unthreaded
Mtg Ear 3 Hole: M10x1.50 Threaded
Mtg Ear 1 Thickness: 1.811in / 46mm
Mtg Ear 2 Thickness: 1.094in / 27.8mm
Mtg Ear 3 Thickness: 0.902in / 22.9mm
Regulator Clock: 3:00
Fan Location: Internal
Regulator Location: Internal
B+ Terminal: M8x1.25
COM Terminal: Spade
Terminal 3 ID: N/C
Polarity: Negative
Pulley Grooves: 6
Pulley Type: Solid
Pulley OD: 2.362in / 60mm
Notes:

Replaces:
BMW 12-31-7-837-981, 12-31-7-838-656
Lucas LRA03300
Remy Light Duty 12941
Valeo 2543424, 439675, 440252, FG18S014

Used On:
BMW M3 4.0L S6 2008, 2009
BMW M3 4.0L S6 2010, 2011, 2012, 2013
BMW M3 3999cc, 4.0L V8 2008, 2009, 2010

MCR Part Number: 11450N

**PROP 65 - This product may expose you to chemicals such as Lead, Carbon Black, Silica, Crystalline which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov**.