Bosch Alternator 12V 120A Part No. 1986A00852

This Bosch alternator is a 12V, 120A unit with Part No. 1986A00852, supplied as an each. It is listed as an alternator type excl. vacuum pump and uses a double pivot lever fastening type, so it is important to compare the mounting arrangement and application details before ordering.

Bosch identifies this unit as a rotating electrical component manufactured to the same rigorous production standard as OE parts. It is made in Spain and carries a 12 months warranty, giving you a clear reference point for replacement planning on vehicles that need a 12V charging system with 120A output.

The alternator is described as providing high power output even at low engine speeds, with high charging efficiency and protection for onboard electrical systems through high tech regulators and rectifiers. Those details matter on vehicles where consistent charging under varying engine speeds is important, but the part number and application still need to match exactly.

The supplied fitment information shows CASE applications, including 580SR III, 580SR PLUS III and 590SR III variants across multiple model years. If your vehicle is one of those machines, confirm the full model designation and year against the listed part number 1986A00852 before buying.

Key Features

• Bosch alternator, 12V, 120A
• Part No. 1986A00852
• Alternator type: excl. vacuum pump
• Fastening type: Double Pivot Lever
• Manufactured in Spain
• 12 months warranty

Specifications

• Voltage: 12
• Power rating: 120 amp
• Alternator charge current: 120A
• Unit of measure: each
• Packaging dimensions: 24 x 18.5 x 20
• Recommended additional repairs: V-Belt / V-Ribbed Belt

Known Fitment Applications

• CASE 580SR III
• CASE 580SR III 2008
• CASE 580SR III 2009
• CASE 580SR PLUS III
• CASE 580SR PLUS III 2008
• CASE 580SR PLUS III 2009
• CASE 590SR III
• CASE 590SR III 2008

Application and Buying Notes

Before ordering, check that your existing unit is a 12V alternator with 120A output and that the mounting style matches the double pivot lever arrangement. The alternator is listed as excl. vacuum pump, so that detail must also line up with the vehicle’s current setup.

The part number is the most reliable buying reference here: 1986A00852. If the vehicle is a CASE 580SR III, 580SR PLUS III or 590SR III variant, match the full model designation and year exactly, because the supplied fitment covers several related applications rather than a universal replacement.

The recommendation for V-Belt / V-Ribbed Belt additional repairs is worth considering at the same time as the alternator change. If the belt is worn, glazed or contaminated, fitting a new alternator on an ageing drive belt can create avoidable charging issues or noise, even when the alternator itself is correct.

This Bosch unit is intended to support dependable charging performance, including high output at low engine speeds. That makes the specification useful, but it does not remove the need to confirm physical fit, electrical connection style and application details against the original part on the machine.

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 1986A00852 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 Double Pivot Lever, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 18.5, Manufactured in Spain, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00852.

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 24, Packaging height 20, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 120A. Part number 1986A00852 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 1986A00852, 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 CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009, CASE 580SR PLUS III. 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: Confirm compatibility by matching Part No. 1986A00852, 12V electrical system details, 120A output, mounting style, and the specific CASE model and year before purchase.

FAQ

What voltage and amperage is this alternator?

It is a 12V alternator with a 120A power rating and 120A alternator charge current. For this listing, part number 1986A00852 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009. These details should still be checked against the original unit before ordering.

What is the part number?

The listed part number is 1986A00852. For this listing, part number 1986A00852 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009. These details should still be checked against the original unit before ordering.

Does this alternator include a vacuum pump?

No. It is listed as an alternator type excl. vacuum pump. For this listing, part number 1986A00852 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009. These details should still be checked against the original unit before ordering.

What vehicles are shown in the supplied fitment data?

The fitment information includes CASE 580SR III, CASE 580SR PLUS III and CASE 590SR III variants, including 2008 and 2009 applications where listed. For this listing, part number 1986A00852 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009. These details should still be checked against the original unit before ordering.

What mounting type is listed?

The fastening type is listed as Double Pivot Lever. For this listing, part number 1986A00852 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009. These details should still be checked against the original unit before ordering.

Is there a warranty listed?

Yes. The alternator carries a 12 months warranty. For this listing, part number 1986A00852 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CASE 580SR III, CASE 580SR III 2008, CASE 580SR III 2009. These details should still be checked against the original unit before ordering.