Alternator regulator, add-on/flush-mounted12 31 7 540 657

BMW OE number, as listed in aftermarket supplier catalogues. Compare listings for this exact number, then confirm the part number and vehicle fitment before ordering.

Lowest price

€48.40

plus €14.74 shipping to Germany, on Ovoko

Compare 12 listings

Compare offers

What each marketplace’s search lists for this number, lowest price first, Ovoko last. Listings can include other parts that name it.

AUTODOC

Prices not checked

New

View on AUTODOC

Ovoko

12 listings

Used

Checked 2026-10-25 19:13 UTC

€48.40Cheapest listing: + €14.74 shipping to Germanyestimated delivery in 4–8 daysView on Ovoko

We may earn a commission through partner links. How we stay useful

Aftermarket part numbers

Supplier articles whose catalogue lists 12 31 7 540 657. Check the supplier’s own restrictions before ordering.

BOSCH: 1986AE0082F00M145881F00MA45222
METZGER AUTOTEILE: 2390113

Vehicle fitment

Engine code and production dates decide fitment. Model name and year alone don’t.

113 vehicles in 28 model series, inferred

Aftermarket parts that list 12 31 7 540 657 fit these vehicles according to their supplier catalogues. That does not prove 12 31 7 540 657 itself fits every one: check the engine code, production dates and the supplier’s restrictions on the model series’ vehicle pages.

BMW

28 model series · 113 vehicles

BMW model series inferred from aftermarket parts
Model series	Production	Engine codes	HSN / TSN
1 (E81)6 vehicles1 of them: some versions only	08/2004 – 12/2011	N43 B16A, N45 B16A, N46 B20B, N46 B20B.., N46 B20C, N46N, N52 B30A, N52 B30B	0005 / AAK, ACU, ACW, AJM, AJN, AJZ, ARC, ARD, ARH, ARK
1 (E82)1 vehicle	01/2008 – 12/2013	N51 B30A, N52 B30A	Not listed
1 (E87) 2004–20114 vehicles1 of them: some versions only	06/2004 – 03/2007	N45 B16A, N46 B20B, N46 B20B.., N46 B20C, N52 B30A, N52 B30B	0005 / 163, 165, 166, 843, AAH, AAJ, AAK, AAM, ACR, ACS, ACU, ACW, ART
1 (E87) LCI3 vehicles	03/2007 – 09/2012	N43 B20A, N45 B16A, N46 B20, N46 B20B, N46 B20B.., N46 B20C	0005 / 163, AAM, ACW, AJM, AJN, ART, ARY, ASB
1 (E88)3 vehicles	03/2007 – 12/2013	N46 B20B, N46 B20B.., N46 B20C.., N51 B30A, N52 B30A	0005 / AMU, ANA, AQM, AQQ
3 (E90) 2004–201114 vehicles3 of them: some versions only	12/2004 – 12/2011	N45 B16A, N45 B20A, N46 B20B.., N46 B20C, N46B20CC, N46 B20E, N51 B30A, N52, N52 B25A, N52 B25B, N52 B25BE, N52 B25BF, N52 B30A, N52 B30B, N53, N53 B30A	0005 / 820, 822, 823, 846, 855, 871, 874, 880, 881, ABY, ADI, ADK, ADN, ADQ, ADT, ADV, AEB, AEF, AJU, ALA, ALB, ALE, ALV, AMF, AVV, AVY, AWF, AWI, AWK, AWM, AWN, AWR, AWT
3 (E90) LCI6 vehicles	09/2008 – 12/2013	N45 B16A, N46 B20B.., N46 B20C, N46 B20E, N51 B30A, N52 B25A, N52 B30A, N52 B30B, N52 KB25	0005 / 820, 823, 871, ADI, ADN, ADT, AJW, AVV, AWG, AWN
3 (E91) 2004–201211 vehicles1 of them: some versions only	12/2004 – 06/2012	N43 B20A, N46 B20B, N46 B20B.., N46 B20C, N51 B30A, N52, N52 B25A, N52 B25B, N52 B25BF, N52 B30A, N53	0005 / 849, 876, 877, 883, 884, ABX, ADJ, ADO, ADX, ADY, AEA, AEE, AJV, ALL, ALO, ALP, ALX, AXC, AXL, AXM, AXN, AXP, AXV
3 (E91) LCI5 vehicles	03/2007 – 08/2012	N46 B20B.., N46 B20C, N52 B25A, N52 B25B, N52 B25BF, N52 B30A, N53, N53 B30A	0005 / 849, 876, 877, 884, ADJ, ADO, ADX, AEE, AJX, ALO, AXM, AXN, AXP, AXQ, AXV, AXW
3 (E92) 2006–20137 vehicles4 of them: some versions only	06/2006 – 02/2010	N46 B20B, N51 B30A, N52, N52 B25A, N52 B30A, N52N, N53, N53 B30A	0005 / 895, AFM, AFO, AFQ, AFS, AJS, AKU, ALT, AVF, AVH, AVK, AVP, AVS
3 (E92) LCI4 vehicles	02/2010 – 12/2013	N51 B30A, N52 B25A, N52 B30A	0005 / BMR
3 (E93) 2006–20135 vehicles	12/2006 – 12/2013	N46 B20B, N51 B30A, N52 B25A, N52 B25BF, N52 B30A, N52 B30B, N53 B30A	0005 / AHI, AHN, AIX, AJR, ASQ, AUK, AUP, AUR, AUT, AUU
3 (E93) LCI5 vehicles	03/2010 – 12/2013	N51 B30A, N52 B25A, N52 B25BF, N52 B30A, N52 B30B, N53 B30A	0005 / AHN, ASQ, AUT, AUU
51 vehicle	09/2008 – 03/2010	N52 B30A	Not listed
5 (E60) 2003–7 vehicles	09/2004 – 12/2009	N52, N52 B25A, N52 B25B, N52 B25BE, N52 B25BF, N52 B30A, N52 B30B, N52 B30BF	0005 / 174, 176, 834, 835, 836, 837, ABC, ABD, ABJ, ABP, ABV, AHD, AHE, AIA
5 (E60) LCI4 vehicles	02/2007 – 03/2010	N52 B30A, N52 B30B, N53	0005 / AIB, AIL, AIP
5 (E61) 2003–20106 vehicles	09/2004 – 05/2010	N52, N52 B25A, N52 B25B, N52 B30A, N52 B30B	0005 / 175, 177, 838, 839, 840, 841, AAW, AAZ, ABA, ABK, AHB, AHC
5 (E61) LCI2 vehicles	01/2007 – 12/2010	N52 B30A, N52 B30B, N53	0005 / 841, AAZ, AIH
6 (E63) 2003–20111 vehicle	09/2004 – 08/2007	N52 B30A, N52 B30B, N52 B30BF	0005 / 811, AGZ
6 (E63) LCI1 vehicle1 of them: some versions only	09/2007 – 08/2010	N52, N53 B30A	0005 / AKF
6 (E64) 2004–20071 vehicle	09/2004 – 08/2007	N52 B30A, N52 B30B	0005 / 812, AGY
6 (E64) LCI1 vehicle1 of them: some versions only	09/2007 – 08/2010	N52, N53 B30A	0005 / AKG
7 (E65)1 vehicle	03/2005 – 08/2008	N52 B30A, N52 B30B	0005 / 825, ACM
7 (E66)1 vehicle	03/2005 – 08/2008	N52 B30A, N52 B30B	0005 / 825, ACM
X3 (E83) 2003–20092 vehicles	07/2005 – 08/2008	N46, N46 B20B	0005 / 851, AGS, AKL
X3 (E83) LCI1 vehicle	09/2008 – 09/2010	N46	0005 / 851, AGS, AKL
Z4 (E85)8 vehicles	09/2005 – 02/2009	N52, N52 B25A, N52 B25B, N52 B25BF, N52 B30A, N52 B30B	0005 / AAA, AAB, AAC, AAD
Z4 (E86)2 vehicles	03/2006 – 08/2008	N52, N52 B30A, N52 B30B	0005 / AAF