Bosch Alternator 12V 150A 1986A00872

The Bosch Alternator 12V 150A, part number 1986A00872, is a rotating electrical component supplied as an individual unit for vehicle charging systems. It is a 12V alternator with a 150A charge current and a direct fastening design, so the mounting style and electrical specification should be checked against the vehicle application before purchase.

This alternator is listed as an excl. vacuum pump type and is made in Spain. Bosch states it is manufactured to the same rigorous production standard as OE parts, with high tech regulators and rectifiers intended to help protect onboard electrical systems. For vehicles that match the application, the 150A output provides a strong charging capacity without relying on guessing about fitment.

A recommended additional repair is the V-belt/V-ribbed belt, which is worth considering when replacing an alternator because belt condition directly affects charging performance. The unit carries a 12 month warranty and is supplied as each, which makes it important to confirm the exact part number and installation details before ordering.

Bosch also notes strong performance at low engine speeds and long-life construction designed for demanding conditions. That makes this alternator a practical choice where the correct application is confirmed and the buyer wants a quality replacement with clear technical identification rather than a generic match.

Key Features

• Bosch alternator, 12V 150A
• Part number: 1986A00872
• Direct fastening type
• Alternator type: excl. vacuum pump
• Manufactured in Spain
• Supplied each

Specifications

• Alternator charge current: 150A
• Voltage: 12V
• Product type: alternator
• Brand: Bosch
• Part No.: 1986A00872
• Fastening type: direct fastening
• Alternator type: excl. vacuum pump
• Manufactured in Spain

Fitment guidance

• Known application families include Mercedes-Benz C-Class, CLK, CLS, E-Class, SLK and Viano.
• Sample applications provided include Mercedes-Benz C-Class 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014.
• Fitment information is grouped under Mercedes-Benz, but the exact vehicle match still needs to be checked against the part number and the alternator type.
• The unit is listed as excl. vacuum pump, so the vacuum pump configuration must be confirmed before ordering.
• The direct fastening mount should be matched to the existing alternator and belt drive layout on the vehicle.

Application and Buying Notes

When checking this Bosch alternator, start with the part number 1986A00872 and confirm the vehicle application against the existing unit. The 12V system voltage, 150A charge current and direct fastening mount all need to line up with the vehicle’s charging system and bracket arrangement, especially because this alternator is listed as excl. vacuum pump.

It is also sensible to inspect the drive belt at the same time. Bosch recommends a V-belt or V-ribbed belt as an additional repair, and belt wear can affect charging output and noise. If the existing belt is aged, glazed or cracked, replacing it alongside the alternator may avoid a repeat job, provided the belt specification matches the vehicle.

The alternator is made in Spain and supplied with a 12 month warranty, but warranty coverage does not replace the need to verify installation compatibility. The packaging size is 28 x 22.5 x 22.5, which can help with handling and storage, although the key buying checks remain the part number, mounting style, voltage and whether the vehicle uses an alternator without a vacuum pump.

Bosch notes high power output at low engine speeds and protection for onboard electrical systems through high tech regulators and rectifiers. Those are useful design characteristics, but the practical result still depends on having the correct application and the charging system in good condition. Matching the alternator type to the vehicle is the safest way to avoid installation issues.

If you are comparing this against the old unit, check the label, housing style and any details connected to the vacuum pump arrangement before ordering. A correct Bosch replacement should be selected on verified compatibility, not on appearance alone, because alternators with similar casing can differ in mount, output and accessory configuration.

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 1986A00872 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, Fastening Type Direct fastening, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 22.5, Manufactured in Spain, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00872, Brand BOSCH.

Additional published details for cross-checking include Description Bosch Alternator 12V 150A, Alternator Charge Current [A] 150, Alternator Type excl. vacuum pump, Packaging length 28, Packaging height 22.5, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 150A. Part number 1986A00872 should be checked first. Listed output rating is 150. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A00872, 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.

Compatibility note: Confirm compatibility using part number 1986A00872, the 12V 150A specification, the direct fastening mount and the excl. vacuum pump application before purchase. If the existing alternator differs in mounting or accessory configuration, do not rely on appearance alone.

FAQ

What is the part number for this Bosch alternator?

The part number is 1986A00872.

What voltage and output does it have?

It is a 12V alternator with a 150A charge current.

Does this alternator use a vacuum pump?

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

What type of mounting does it use?

It uses a direct fastening type.

Which vehicles are listed in the fitment information?

The fitment information includes Mercedes-Benz C-Class, CLK, CLS, E-Class, SLK and Viano.

Is there a warranty included?

Yes. The listed warranty is 12 months.