Bosch Alternator 12V 140A Part No. 1986A00889

The Bosch Alternator 12V 140A is a rotating electrical component supplied as an each unit, with a 12 volt output and a 140 amp power rating. The part number is 1986A00889, which is the key identifier to check against your existing unit before ordering.

This alternator is built with high quality raw materials, is corrosion resistant, and uses a reduction drive designed to maintain continual speeds for easier starting. Those details matter in everyday use, especially where the charging system is expected to cope with regular starting and demanding operating conditions.

It is covered by a 12 month warranty and sits within Bosch’s rotating electrical and alternator product groups. If you are replacing a charging system component, the most reliable check is to match the part number 1986A00889, confirm 12V system voltage, and verify the 140A output requirement for the vehicle application.

Key Features

• Bosch alternator
• 12V system voltage
• 140A power rating
• Part No. 1986A00889
• Corrosion resistant construction
• Reduction drive for easier starting

Specifications

• Brand: Bosch
• Product type: Alternator
• Voltage: 12
• Power rating: 140 amp
• Part No.: 1986A00889
• Unit of measure: Each
• Warranty: 12 months
• Product group 1: Rotating electrical

Application and Buying Notes

Before buying, confirm that your original alternator or the required replacement specification matches part number 1986A00889. The listed voltage is 12V and the output is 140A, so those two points should also line up with the vehicle’s charging system requirements.

If you are comparing units, check the physical alternator details on the vehicle and any matching numbers on the old part. A correct part number is the strongest indicator here, especially when the replacement must suit a 12 volt system and a 140 amp charging output.

The reduction drive is noted as helping maintain continual speeds for easier starting, but it should still be treated as one part of the overall charging setup rather than a guarantee of vehicle performance. Confirm the application carefully before fitting, and do not rely on output rating alone without checking the full part match.

This alternator is sold as an individual unit and carries a 12 month warranty. That makes it important to keep your invoice and installation details, and to ensure the replacement is suitable for the exact application before the old unit is removed or discarded.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number 1986A00889 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR, Unit of Measure EACH, Warranty 12 Months, Voltage 12, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00889, Brand BOSCH, Description Bosch Alternator 12V 140A, Power Rating (Amp) 140.

Additional published details for cross-checking include Product Group 2 ALTERNATORS.

Bosch Alternator 12V 140A. Part number 1986A00889 should be checked first. Listed voltage is 12. Listed output rating is 140. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A00889, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 140 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

Compatibility note: Please confirm compatibility using part number 1986A00889, the 12V system requirement, and the 140A output before purchase. If there is any doubt, match the original alternator details on the vehicle with the listed application information.

FAQ

What is the part number for this Bosch alternator?

The part number is 1986A00889. For this listing, part number 1986A00889 is the main reference point. Listed voltage is 12. Listed output rating is 140. These details should still be checked against the original unit before ordering.

What voltage does this alternator use?

It is a 12V alternator. For this listing, part number 1986A00889 is the main reference point. Listed voltage is 12. Listed output rating is 140. These details should still be checked against the original unit before ordering.

What is the output rating?

The listed power rating is 140 amp. For this listing, part number 1986A00889 is the main reference point. Listed voltage is 12. Listed output rating is 140. These details should still be checked against the original unit before ordering.

What warranty is included?

It carries a 12 month warranty. For this listing, part number 1986A00889 is the main reference point. Listed voltage is 12. Listed output rating is 140. These details should still be checked against the original unit before ordering.

Is this sold as a set or as a single unit?

It is supplied as each, so it is sold as a single alternator. For this listing, part number 1986A00889 is the main reference point. Listed voltage is 12. Listed output rating is 140. These details should still be checked against the original unit before ordering.

How should I check if it will suit my vehicle?

Confirm the part number 1986A00889, the 12V system requirement, and the 140A output against your existing unit and vehicle application before ordering. For this listing, part number 1986A00889 is the main reference point. Listed voltage is 12. Listed output rating is 140. These details should still be checked against the original unit before ordering.