Rebuilt Alternator, Genuine BMW - F87 M2 F80 M3 F82 F83 M4

Original BMW rebuilt alternator for S55-powered M2, M3, and M4 models. Price includes a $211.75 refundable core deposit.

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Typically ships in 3-5 business days.

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Price:
$1,333.30

This part is listed by BMW as BMW part number 12319845489 (12-31-9-845-489) and is described as Genuine BMW Remanufactured Alternator for S55 engine, as used on F87 M2 (2019, 2020, 2021), F80 M3 (2015, 2016, 2017, 2018), and F82/F83 M4 (2015, 2016, 2017, 2018, 2019, 2020).

Price includes a $484.00 refundable core deposit.  Core refund will be processed upon return and approval of a usable alternator core. Please note the core charge amount can change without notice. At least update the core charge and credit for this alternator was $484.00. Sending a core back is completely optional but helps reduce the out-of-pocket expense of the S55 alternator, and allows proper recycling and re-use of your old/failed alternator part). Please inquire with us if you have question on cores.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648

A core charge applies to this purchase. The supply of original parts for rebuilding keeps the final purchase price low. The core must match the part that was supplied in terms of fitment, type, application, accessories, and hardware. Damaged or modified cores will not receive a refund. A core charge can only be refunded once the core has been inspected and approved. Click here for our Core Policy.

BMW Fitments:
2 Series
F87 (2016-2021) > M2 Competition S55 (2019+)
3 Series
F80 (2015-2018) > M3 (2015-2018)
4 Series
F82 / F83 (2015-2020) > M4 (2015-2020)
F82 / F83 (2015-2020) > M4 GT4
F82 / F83 (2015-2020) > M4 GTS
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