HomeBosch AL148X Alternator
Part #: AL148X

Bosch AL148X Alternator

Alternator (Remanufactured)
18 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Alternator (Remanufactured)
Fitment: BMW, 535i, 735i, 735iL, and 535is
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Reliable Remanufactured Alternator for BMW 535i and 735i Models

The Bosch AL148X Alternator (Remanufactured) is engineered to restore the electrical charging system of select BMW vehicles. Designed specifically for BMW 535i, 535is, 735i, and 735iL models, this 12-volt alternator delivers consistent performance and durability.

  • Voltage: 12V system compatibility
  • Amperage Rating: 140 amps for efficient charging
  • Rotation Direction: Clockwise for proper fitment
  • External fan type with included external fan for optimal cooling
  • Internal regulator type with external regulator included
  • Pulley: Single groove (1v) pulley included, 73mm outside diameter
  • Case material and color: Aluminum for lightweight durability
  • Plug Type: 381 with rear view main mounting ear at 6 o'clock
  • Remanufactured to meet OEM specifications

About the Bosch Alternator (Remanufactured) Product Line

The Bosch Alternator (Remanufactured) line offers high-quality remanufactured alternators that meet strict OEM standards. Each unit undergoes comprehensive testing and refurbishment to ensure reliable electrical output and longevity. This product line focuses on restoring alternator functionality with components such as internal regulators and external fans included, providing a cost-effective alternative to new parts without compromising performance.

Detailed Product Description

The Bosch AL148X alternator is designed for BMW 535i, 535is, 735i, and 735iL models requiring a 12-volt charging system. It features a clockwise rotation direction and an external fan type with the fan included to maintain optimal operating temperatures. The alternator includes a single-groove (1v) pulley with a 73mm outside diameter, ensuring compatibility with the vehicle’s belt system. The aluminum case provides a lightweight yet durable housing, while the internal regulator type with an external regulator included ensures stable voltage regulation. The plug type 381 and the rear view main mounting ear positioned at 6 o'clock facilitate proper installation and secure fitment. With a 140-amp rating, this alternator supports the electrical demands of the specified BMW models effectively.

Common Issues Addressed by This Alternator

  • Battery not charging or slow charging
  • Dim or flickering headlights and dashboard lights
  • Electrical system warning lights illuminated
  • Unusual noises from the alternator area
  • Vehicle stalling or difficulty starting due to electrical failure

Installation Notes and Tips

  • Ensure vehicle compatibility with BMW 535i, 535is, 735i, and 735iL models before installation
  • Disconnect the battery prior to removal and installation to prevent electrical shorts
  • Verify the clockwise rotation direction and pulley type match the original alternator
  • Check all electrical connections, including plug type 381, for secure fitment
  • Inspect belt condition and tension after installation to avoid premature wear

Quality Assurance and Warranty

This Bosch AL148X alternator is remanufactured to meet OEM specifications, ensuring reliable performance and durability. Each unit is tested for electrical output, regulator function, and mechanical integrity. The product is packaged securely in a box to prevent damage during transport. Warranty details are provided by Bosch and typically cover defects in materials and workmanship for a specified period.

BrandBosch
Part NumberAL148X
PositionAlternator (Remanufactured)
Amperage Rating140
Case ColorAluminum
Case MaterialAluminum
Cases Per Pallet (ORLY)60
External Fan IncludedYes
External Regulator IncludedYes
Fan TypeExternal
New Or RemanufacturedRemanufactured
One Wire CapableNo
Original Equipment Manufacturer NamesBO
Outside Pulley Diameter73
PackagingBox
Plug Clock Rear View Main Mounting Ear at 6 O Clock12
Plug Type381
Pulley Groove Quantity1
Pulley IncludedYes
Pulley Type1V
Pulley Type / Belt Type (Alternator)1V
Regulator TypeInternal
Rotation DirectionClockwise
Unit(s) per Car Qty (ORLY)1
Voltage12

This part fits 18 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1993BMW535i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1992BMW535i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1992BMW735i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1992BMW735iL3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1991BMW535i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1991BMW735i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1991BMW735iL3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1990BMW535i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1990BMW735i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1990BMW735iL3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1989BMW535i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1989BMW735i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1989BMW735iL3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1988BMW535i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1988BMW535is3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1988BMW735i3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1988BMW735iL3.5LL6N/ATo 140 Amp Alternator; Alternator (Remanufactured)
1987BMW735i3.5LL6N/ATo 140 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:

1231173570512311735706

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