Bosch Alternator 12V 120A Part No. 1986A00844

The Bosch Alternator 12V 120A, part no. 1986A00844, is a rotating electrical component supplied as an each unit for 12-volt applications. It is rated at 120 amps, which is the key output figure to match when replacing the original alternator on a vehicle that requires this specification.

This alternator is listed as an alternator type excl. vacuum pump and uses a single pivoted lever fastening type. Those details matter when checking replacement compatibility, because the mounting style and alternator configuration need to line up with the vehicle’s original setup before fitting begins.

Bosch identifies this unit as being made from high quality raw materials for long life and optimal performance. It carries a 12 month warranty and is manufactured in China. For peace of mind, confirm the part number 1986A00844 and compare the application details against the vehicle before ordering.

The listed fitment information includes Mercedes-Benz and Mercedes-Benz C-Class applications, with sample references to C-Class vehicles from 2000, 2001 and 2002. Fitment should still be checked carefully against the exact vehicle details and the original alternator specification, as alternators can differ by engine, mounting arrangement, and ancillary equipment.

Key Features

• 12V alternator with 120A charge current
• Bosch branded rotating electrical component
• Part number: 1986A00844
• Alternator type: excl. vacuum pump
• Single pivoted lever fastening type
• 12 month warranty

Specifications

• Voltage: 12
• Power rating: 120 amp
• Alternator charge current: 120A
• Type: Alternator
• Unit of measure: Each
• Product group: Rotating Electrical
• Product group 2: Alternators
• Manufactured in: China

Fitment information

• Mercedes-Benz
• Mercedes-Benz C-Class
• Sample application references include Mercedes-Benz C-Class 2000, 2001 and 2002

Application and Buying Notes

The most important checks for this alternator are the 12V system requirement, the 120A output rating, and the part number 1986A00844. If the vehicle’s original unit differs in voltage, output, mounting style, or alternator configuration, it should not be assumed to be a direct replacement.

This alternator is listed as excl. vacuum pump, so the original vehicle arrangement needs to be matched carefully. That detail can make a difference on some applications, especially where the alternator is part of a specific accessory or engine layout.

The fastening type is a single pivoted lever, so the mounting arrangement should be compared with the removed unit before installation. Checking the physical mount, belt path, and connector arrangement against the old alternator is the safest way to confirm suitability.

A V-Belt / V-Ribbed Belt is recommended as an additional repair when replacing this alternator. If the belt shows wear, cracking, glazing, or age-related stretch, replacing it at the same time can help avoid a comeback after the alternator swap.

The listed fitment points to Mercedes-Benz and Mercedes-Benz C-Class applications, including sample C-Class references for 2000, 2001 and 2002. Even where those application details appear to align, the correct buying method is still to verify against the vehicle’s exact build details and the original part number.

For workshop or DIY installation, compare the old and new units side by side before bolting up. Confirm the 12V rating, 120A output, part no. 1986A00844, and the single pivoted lever mounting so the replacement matches the vehicle’s charging system requirements.

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 1986A00844 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 20, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00844.

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 23.9, Packaging height 20, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 120A. Part number 1986A00844 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 1986A00844, 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.

The listed warranty is 12 Months. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm compatibility by matching part number 1986A00844 and checking the vehicle’s exact application details, mounting style, alternator configuration, and 12V 120A specification before purchase.

FAQ

What is the voltage of this Bosch alternator?

This alternator is rated at 12V.

What is the output rating?

The listed power rating and alternator charge current are both 120A.

What is the part number?

The part number is 1986A00844.

Does this alternator include a vacuum pump?

No. It is listed as alternator type excl. vacuum pump.

What vehicles are listed in the fitment information?

The fitment information includes Mercedes-Benz and Mercedes-Benz C-Class, with sample references to C-Class 2000, 2001 and 2002.

What should I check before ordering?

Confirm the part number 1986A00844, the 12V and 120A specification, the single pivoted lever mounting type, and the vehicle’s exact application details before purchase.