Bosch Alternator 12V 175A Part No. 1986A01045

The Bosch Alternator 12V 175A is a rotating electrical component with a charge current of 175A and part number 1986A01045. It is listed as an alternator passenger unit and is supplied as each, with a 12 month warranty.

Bosch lists this unit with a reduction drive and corrosion resistant construction, and notes that it is made from high quality raw materials. It is manufactured in Spain and sits in the Bosch rotating electrical product group.

Key Features

• 12V alternator with 175A charge current
• Bosch part number 1986A01045
• Alternator type excl. vacuum pump
• Double pivot lever fastening type
• Reduction drive design
• Corrosion resistant construction

Specifications

• Brand: Bosch
• Product type: Alternator passenger
• Alternator charge current: 175A
• Voltage: 12V
• Part No.: 1986A01045
• Warranty: 12 months
• Fastening type: Double pivot lever
• Alternator type: Excl. vacuum pump

Fitment guidance

• Fitment data supplied references Mercedes-Benz applications
• Referenced vehicle groups include C-Class, E-Class, SLC and SLK
• Sample applications listed include Mercedes-Benz C-Class 2013, 2014, 2015, 2016, 2017 and 2018
• Application confirmation should still be checked against the vehicle’s existing alternator and part number

Application and Buying Notes

Before ordering, confirm the existing alternator matches Bosch part number 1986A01045, the 12V rating and the 175A charge current. The key application detail here is that this unit is specified as excl. vacuum pump, so a visual and part number match on the vehicle is important.

The fastening type is listed as double pivot lever, which should be checked against the current mounting arrangement. If the bracket style, pulley arrangement or connector layout differs, the alternator may not suit the vehicle even where the model family appears similar.

Bosch also recommends checking the V-belt or V-ribbed belt at the same time. That is sensible because charging issues are not always caused by the alternator alone, and belt wear or incorrect drive condition can affect charging performance and installation quality.

The unit is manufactured in Spain and supplied with a 12 month warranty. Keep the original unit for comparison until the new alternator is confirmed against the vehicle, especially when working across Mercedes-Benz C-Class and E-Class applications where multiple variants may exist within the same model family.

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 1986A01045 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 PASSENGER, Unit of Measure EACH, Warranty 12 Months, 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. 1986A01045, Brand BOSCH.

Additional published details for cross-checking include Description Bosch Alternator 12V 175A, Alternator Charge Current [A] 175, Alternator Type excl. vacuum pump, Packaging length 24, Packaging height 20, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 175A. Part number 1986A01045 should be checked first. Listed output rating is 175. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A01045, 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 passenger in workshop, fleet, trade, agricultural, or construction service, the listed output 175 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 2013, MERCEDES-BENZ C-CLASS 2014, MERCEDES-BENZ C-CLASS 2015. 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 using the Bosch part number 1986A01045, the 12V 175A specification, the excl. vacuum pump design and the double pivot lever fastening type before purchase.

FAQ

What is the part number for this Bosch alternator?

The part number listed is 1986A01045. For this listing, part number 1986A01045 is the main reference point. Listed output rating is 175. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2013, MERCEDES-BENZ C-CLASS 2014. These details should still be checked against the original unit before ordering.

What voltage and charge current does it have?

It is a 12V alternator with a charge current of 175A. For this listing, part number 1986A01045 is the main reference point. Listed output rating is 175. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2013, MERCEDES-BENZ C-CLASS 2014. These details should still be checked against the original unit before ordering.

Does this alternator include a vacuum pump?

No. It is specified as an alternator type excl. vacuum pump. For this listing, part number 1986A01045 is the main reference point. Listed output rating is 175. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2013, MERCEDES-BENZ C-CLASS 2014. These details should still be checked against the original unit before ordering.

What fitting style does it use?

The fastening type listed is double pivot lever. For this listing, part number 1986A01045 is the main reference point. Listed output rating is 175. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2013, MERCEDES-BENZ C-CLASS 2014. These details should still be checked against the original unit before ordering.

What vehicles are referenced in the fitment information?

The fitment information references Mercedes-Benz applications, including C-Class, E-Class, SLC and SLK groups, with sample C-Class model years shown from 2013 to 2018. For this listing, part number 1986A01045 is the main reference point. Listed output rating is 175. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2013, MERCEDES-BENZ C-CLASS 2014. These details should still be checked against the original unit before ordering.

Is any additional repair item recommended?

Yes. Bosch recommends checking the V-belt or V-ribbed belt as an additional repair item. For this listing, part number 1986A01045 is the main reference point. Listed output rating is 175. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2013, MERCEDES-BENZ C-CLASS 2014. These details should still be checked against the original unit before ordering.