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Used in conjunction with relay 12631742690 to solve SMG transmission issues

M3's equipped with the SMG transmission from 4/2004 have been known to experience premature failure of the hydraulic control unit relay. If the relay were to fail you will lose all hydraulic control and the transmission will not shift leaving you stranded.

BMW has a service bulletin about this issue which is number S.I. B23 01 04

Fits These Cars:
2004 BMW M3 Manual Trans Wire Harness

From 4/2004
2005 BMW M3 Manual Trans Wire Harness
2006 BMW M3 Manual Trans Wire Harness
Product match fitment

BMW SMG Transmission Repair Wiring Set - Genuine BMW 12637545666

Genuine bmw logoGenuine BMW
SKU #:


Manual Trans Wire Harness
OE Numbers:
$30.79 MSRP: $37.99
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