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Bosch AL148X Alternator
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.
| Brand | Bosch |
|---|---|
| Part Number | AL148X |
| Position | Alternator (Remanufactured) |
| Amperage Rating | 140 |
| Case Color | Aluminum |
| Case Material | Aluminum |
| Cases Per Pallet (ORLY) | 60 |
| External Fan Included | Yes |
| External Regulator Included | Yes |
| Fan Type | External |
| New Or Remanufactured | Remanufactured |
| One Wire Capable | No |
| Original Equipment Manufacturer Names | BO |
| Outside Pulley Diameter | 73 |
| Packaging | Box |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 12 |
| Plug Type | 381 |
| Pulley Groove Quantity | 1 |
| Pulley Included | Yes |
| Pulley Type | 1V |
| Pulley Type / Belt Type (Alternator) | 1V |
| Regulator Type | Internal |
| Rotation Direction | Clockwise |
| Unit(s) per Car Qty (ORLY) | 1 |
| Voltage | 12 |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1993 | BMW | 535i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1992 | BMW | 535i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1992 | BMW | 735i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1992 | BMW | 735iL | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1991 | BMW | 535i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1991 | BMW | 735i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1991 | BMW | 735iL | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1990 | BMW | 535i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1990 | BMW | 735i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1990 | BMW | 735iL | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1989 | BMW | 535i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1989 | BMW | 735i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1989 | BMW | 735iL | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1988 | BMW | 535i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1988 | BMW | 535is | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1988 | BMW | 735i | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1988 | BMW | 735iL | 3.5L | L6 | N/A | To 140 Amp Alternator; Alternator (Remanufactured) |
| 1987 | BMW | 735i | 3.5L | L6 | N/A | To 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.