Part #: AL0850X

Bosch AL0850X Alternator

Alternator (Remanufactured)
⚙️ 21 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Alternator (Remanufactured)
🚗Fitment: BMW, 335is, 1 Series M, 135i, 335i, 335i xDrive, 535i, 535i xDrive, 335xi, and 535xi
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Reliable Remanufactured Alternator for BMW Models

The Bosch AL0850X Alternator (Remanufactured) is designed to provide dependable electrical charging and starting performance for select BMW vehicles. Engineered to meet OEM specifications, this 12-volt alternator ensures consistent power delivery and efficient operation.

  • Voltage: 12V for standard automotive electrical systems
  • Rotation Direction: Clockwise for proper engine compatibility
  • Fan Type: Internal with external fan included for optimal cooling
  • Pulley: 7-groove, 6s type pulley included with 55mm outside diameter
  • Amperage Rating: 180 amps to support high electrical loads
  • Regulator: Internal regulator included for stable voltage output
  • Case Material and Color: Durable aluminum construction in aluminum finish
  • Plug Type: 463 with rear view main mounting ear at 6 o'clock position
  • New or Remanufactured: Remanufactured to meet Bosch quality standards

About the Bosch Alternator (Remanufactured) Product Line

The Bosch Alternator (Remanufactured) line offers remanufactured alternators that maintain strict quality and performance standards comparable to new units. These alternators undergo comprehensive testing and refurbishment processes to restore functionality and reliability. The AL0850X model is part of this line, providing a cost-effective replacement option for BMW 1 Series M, 135i, 335i, 335is, 335i xDrive, 335xi, 535i, 535i xDrive, and 535xi models.

Detailed Product Description

This Bosch AL0850X alternator features a 12-volt electrical system with a 180-amp output rating, suitable for vehicles requiring high electrical capacity. The internal fan design combined with an included external fan ensures efficient heat dissipation during operation. The clockwise rotation direction and 7-groove pulley with a 55mm diameter are engineered to match the specific belt and engine configurations of compatible BMW models. The internal voltage regulator maintains consistent electrical output, protecting vehicle electronics and battery health. The aluminum case provides durability and corrosion resistance, while the plug type 463 and mounting ear placement facilitate straightforward installation.

Compatible BMW Models and Common Applications

  • Replacement for alternator failures in BMW 1 Series M and 135i
  • Suitable for BMW 335i, 335is, 335i xDrive, and 335xi with charging issues
  • Used in BMW 535i, 535i xDrive, and 535xi for restoring electrical system performance
  • Addresses problems such as battery not charging, dimming lights, and electrical system faults
  • Ideal for vehicles experiencing alternator pulley or regulator failures

Installation Notes and Tips

  • Ensure vehicle battery is disconnected before installation to prevent electrical shorts
  • Verify clockwise rotation direction matches engine requirements
  • Confirm plug type 463 and mounting ear position align with vehicle harness and bracket
  • Inspect belt condition and tension; replace if worn to avoid premature alternator wear
  • Use proper torque specifications when securing alternator to prevent damage

Quality Assurance and Warranty

The Bosch AL0850X alternator is remanufactured to meet stringent Bosch quality standards, ensuring reliable performance and durability. Each unit undergoes comprehensive testing to verify electrical output, mechanical integrity, and regulator function. This product is packaged securely in a box to protect during shipping. Warranty coverage details should be confirmed with the distributor or installer.

BrandBosch
Part NumberAL0850X
PositionAlternator (Remanufactured)
Amperage Rating180
Case ColorAluminum
Case MaterialAluminum
Cases Per Pallet (ORLY)60
External Fan IncludedYes
External Regulator IncludedYes
Fan TypeInternal
New Or RemanufacturedRemanufactured
One Wire CapableNo
Original Equipment Manufacturer NamesBO
Outside Pulley Diameter55
PackagingBox
Plug Clock Rear View Main Mounting Ear at 6 O Clock12
Plug Type463
Pulley Groove Quantity7
Pulley IncludedYes
Pulley Type6S
Pulley Type / Belt Type (Alternator)7S-CP
Regulator TypeInternal
Rotation DirectionClockwise
Unit(s) per Car Qty (ORLY)1
Voltage12

This part fits 21 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2013BMW335is3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2012BMW335is3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2011BMW1 Series M3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2011BMW335is3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2010BMW135i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2010BMW335i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2010BMW335i xDrive3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2010BMW535i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2010BMW535i xDrive3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2009BMW135i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2009BMW335i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2009BMW335i xDrive3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2009BMW535i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2009BMW535i xDrive3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2008BMW135i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2008BMW335i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2008BMW335xi3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2008BMW535i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2008BMW535xi3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2007BMW335i3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)
2007BMW335xi3.0LL6N/ATo 180 Amp Alternator; Alternator (Remanufactured)

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

12317558220

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.