Home
12317847517 - Genuine BMW Voltage Regulator - E9X M3 S65

Genuine BMW Voltage Regulator - E9X M3 S65

Genuine BMW

T#: 39048 | Part#: 12317847517

Part#: 12-31-7-847-517

Part#: 12 31 7 847 517

Part#: 12.31.7.847.517

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

1 of

2 of

3 of

4 of

5 of

6 of

7 of

8 of

Checking Vehicle Fitment...

$205.99

6% off MSRP:

$218.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

Lifetime Replacement

Free Shipping

Availability:

In Stock

Est. Ship Date:

on Jul 13, 2026

Qty

Add to Wish List

Product Details

If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.

If the output is too high, the regulator prevents the excess power from damaging any sensitive electronics in the electrical system.

If the output is too low, the regulator will cause the alternator to provide more power to the system to prevent excess drain and strain on the battery.

Genuine BMW Voltage Regulator - Valeo
This item fits the following BMW Chassis:
E90,E92,E93

Fits BMW Engines including:
S65

Prop 65 Warning

Previous Revisions

12-31-7-837-980, 12 31 7 837 980, 12.31.7.837.980, 12317837980

Cross Reference

12317847517, 12-31-7-847-517, 12 31 7 847 517, 12.31.7.847.517
12317568260, 12-31-7-568-260, 12 31 7 568 260, 12.31.7.568.260
12317837980, 12-31-7-837-980, 12 31 7 837 980, 12.31.7.837.980

Product Q&A

Lifetime Replacement

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

Fits These Cars

MAKE	MODEL	SUBMODEL	ENGINE	Special Fitment Notes
BMW	E90	M3	S65 4.0L	Use vehicle selector to confirm fitment
BMW	E90	M3	S65 4.0L	Use vehicle selector to confirm fitment
BMW	E92	M3	S65 4.0L	Use vehicle selector to confirm fitment
BMW	E92	M3	S65 4.0L	Use vehicle selector to confirm fitment
BMW	E93	M3	S65 4.0L	Use vehicle selector to confirm fitment
BMW	E93	M3	S65 4.0L	Use vehicle selector to confirm fitment

*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.