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BMW E28 Alternator & Alternator Parts

BMW E28 Alternator & Alternator Parts Bosch Alternators are built especially for extremes of heat, cold and high demand. Your BMW deserves nothing less than the best, which is why BMW has used Bosch as an Original Equipment Alternator manufacturer for decades. Bosch alternators are built to last using the highest quality materials and the most technologically advanced processes. All alternator parts are 100% factory tested prior to and during remanufacturing to assure that they meet or exceed original equipment specifications. And every Bosch alternator is fully load tested to guarantee compliance with Bosch's strict performance specifications. Buy the best alternator for your BMW: Buy a Bosch Alternator!
You're currently viewing parts for your (E28) 5-Series 1982-1988. Reset your chassis
For accurate results, specify your model below.
Large HD Polyurethane Alternator Bushings - Set of 4

Trouble trying to get your alternator tensioned or aligned properly? This is a common issue due to the rubber bushings wearing with age or degrading from exposure to the elements, oil, or other contaminants.

Restore proper alignment and tensioning function to your alternator with these Heavy Duty Alternator Polyurethane Bushings.

These will resist pressure and any possible contaminants for much longer than stock rubber bushings, making these a likely one time solution to your alternator issues!

Replaces BMW part # 12311268433. Most cars require four.

This item fits the following BMWs:
1977-1983 E21 BMW 320i
1984-1988 E30 BMW 318i 325e 325es
1988-1991 E30 BMW M3
1976-1981 E12 BMW 528i 530i
1982-1988 E28 BMW 528e 533i 535i M5
1982-1989 E24 BMW 633csi 635csi M6
1981-1987 E23 BMW 733i 735i

Part #: tms3458KT
Price: $22.00 (USD) 
Quantity:   
OEM Bosch Voltage Regulator (Bosch Alternator) - 12311726022 This is the voltage regulator found on the back of the alternator. It's a normal wear item and the contacts are the first thing to check if you believe the alternator is not charging the battery (lights flickering or dim, battery light on in the dash, the engine quits without warning, or other electrical failures). The voltage regulator manages the voltage flowing through the car, especially to and from the battery. There are two carbon contacts on the regulator that control the magnetic field when the alternator is spinning and these contacts wear over time. A new set of contacts will be about 13mm in length. Anything less than 5mm and the voltage regulator should be replaced, regardless if that is the cause of your electrical problems or not. Most older mechanics will tell you to keep a spare regulator in your toolbox.

The carbon contacts can be replaced on their own but requires desoldering the old ones from the base and then soldering the new ones on. It may be easier to just replace the unit as a whole.

This is the OEM voltage regulator, made by Bosch or Hella. It's the one with the white base and fits most Bosch alternators from 1977-1995 (Valeo and other alternators look very different and have a black cover and base). This part number replaces the previous BMW part numbers - 12311271664, 12321279548, 12311722755, 12321711399 and Bosch part numbers 1197311021 and 1197311028.
Part #: 12311726022
Price: $49.95 (USD) 
Quantity:   
Alternator Adjusting Bar - E30 325e 325i, E28 528e Replace the alternator adjuster on BMW's with the M20 engine with this Genuine BMW part. Over time this part can become corroded or the teeth can become stripped.

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1982-1988 E28 BMW 528e
Part #: 12311274833
Price: $37.95 (USD) 
Quantity:   
OEM Bosch Alternator - E30 M3, E28 M5 and E24 M6

If your car has died on the side of the road from a dead battery and you notice flickering or low powered head lights, it's likely your alternator failing. To be sure you are getting a high quality part with a long life-span, choose this OEM Bosch Alternator. OEM replacement from BMW part number 12311466088 and 12311735706

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

A $92.00 refundable core charge is included with this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.

This alternator fits all 1987-1991 M3 (E30), all 1988 M5 (E28), and all 1988-1989 M6 (E24).

Part #: AL140X
Price: $321.00 (USD) 
Quantity:   
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