Bosch Alternator 12V 120A Part No. 1986A00863

The Bosch Alternator 12V 120A, part number 1986A00863, is a rotating electrical component supplied as a single unit. It is rated at 12 volts with a 120 amp charge current, making the electrical output specification the key point to check before ordering.

This alternator is listed as an alternator type excluding a vacuum pump, and it uses a single pivoted lever fastening type. Those details matter when comparing against the vehicle’s original charging system layout and mounting arrangement.

Bosch notes that the unit is made from high-quality raw materials to support long life and optimal performance. It is supplied with a 12 month warranty and is manufactured in China.

Key Features

• 12V alternator with 120A charge current
• Bosch rotating electrical component
• Alternator type: excl. vacuum pump
• Single pivoted lever fastening type
• Supplied as each
• 12 month warranty

Specifications

• Brand: Bosch
• Part No.: 1986A00863
• Product type: Alternator
• Voltage: 12
• Power rating: 120 amp
• Alternator charge current: 120A
• Fastening type: Single pivoted lever
• Recommended additional repair: V-Belt / V-Ribbed Belt

Fitment guidance

• Fitment information supplied includes Mercedes-Benz and Mercedes-Benz C-Class applications.
• Sample applications listed include Mercedes-Benz C-Class 2000, 2001 and 2002.
• Confirm the vehicle application against the part number 1986A00863 and the alternator type before ordering.

Application and Buying Notes

The most important check on this Bosch alternator is the electrical rating: 12V and 120A. If the vehicle’s original unit is not the same voltage and charge current, the part should not be assumed to suit. The part number 1986A00863 is the strongest identifier for matching.

The alternator is described as excl. vacuum pump, so the original vehicle arrangement needs to be confirmed carefully. Mounting style also matters here, because the fastening type is listed as single pivoted lever rather than a universal fitment style.

A V-Belt or V-Ribbed Belt is noted as a recommended additional repair. That is useful if the existing belt shows wear, glazing or cracking, because a new alternator is often installed alongside belt service where required.

Packaging dimensions are listed as 28 x 22.5 x 22.5, which may help when checking storage or freight handling, but the actual purchasing decision should still come back to the vehicle application, the mounting arrangement and the part number. If any of those details do not line up, further verification is needed before fitment.

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 1986A00863 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, Fastening Type Single pivoted lever, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 22.5, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00863.

Additional published details for cross-checking include Brand BOSCH, Description Bosch Alternator 12V 120A, Power Rating (Amp) 120, Alternator Charge Current [A] 120, Alternator Type excl. vacuum pump, Packaging length 28, Packaging height 22.5, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 120A. Part number 1986A00863 should be checked first. Listed voltage is 12. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A00863, 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 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001, MERCEDES-BENZ C-CLASS 2002. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Please confirm compatibility using part number 1986A00863, the 12V 120A rating, the excl. vacuum pump alternator type, and the vehicle application details before purchase.

FAQ

What is the part number for this alternator?

The part number is 1986A00863. For this listing, part number 1986A00863 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001. These details should still be checked against the original unit before ordering.

What voltage and amperage is it rated at?

It is rated at 12 volts and 120 amps. For this listing, part number 1986A00863 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001. These details should still be checked against the original unit before ordering.

Does this alternator have a vacuum pump?

No. The alternator type is listed as excl. vacuum pump. For this listing, part number 1986A00863 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001. These details should still be checked against the original unit before ordering.

What mounting or fastening type is listed?

The fastening type is single pivoted lever. For this listing, part number 1986A00863 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001. These details should still be checked against the original unit before ordering.

What warranty is supplied?

A 12 month warranty is listed. For this listing, part number 1986A00863 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001. These details should still be checked against the original unit before ordering.

Which vehicles are mentioned in the fitment information?

The fitment information supplied mentions Mercedes-Benz and Mercedes-Benz C-Class applications, including sample applications for Mercedes-Benz C-Class 2000, 2001 and 2002. For this listing, part number 1986A00863 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2000, MERCEDES-BENZ C-CLASS 2001. These details should still be checked against the original unit before ordering.