Bosch Alternator 12V 150A 1986A00943

The Bosch Alternator 12V 150A is a passenger vehicle alternator with a 150 amp charge current and part number 1986A00943. It is listed as an alternator type excl. vacuum pump, so it is important to confirm the application details before purchase, especially where the vehicle was fitted with a different charging arrangement.

This unit uses a single pivoted lever fastening type and is supplied as one each. The listed warranty is 12 months. For servicing around the charging system, the recommended additional repair is a V-Belt/V-Ribbed Belt, which is worth checking if the belt is worn, glazed, noisy, or due for replacement at the same time.

Bosch identifies this alternator as part of its rotating electrical product group, and the stated features include corrosion resistance, high-quality raw materials, and a reduction drive to maintain continual speeds for easier starting. The product is manufactured in China and is described as a Bosch Alternator 12V 150A.

Key Features

• 12V passenger vehicle alternator
• 150A alternator charge current
• Part number 1986A00943
• Alternator type: excl. vacuum pump
• Single pivoted lever fastening type
• Corrosion resistant construction

Specifications

• Brand: Bosch
• Product type: Alternator Passenger
• Unit of measure: Each
• Alternator charge current: 150A
• Voltage: 12V
• Part No.: 1986A00943
• Warranty: 12 months
• Manufactured in: China

Fitment guidance

• Fitment data includes Mercedes-Benz applications.
• Fitment groups shown include Mercedes-Benz C-Class, CLK, M-Class and SLK.
• Sample application references shown include Mercedes-Benz C-Class 2004, 2005, 2006, 2007 and 2008.
• Because the alternator is listed as excl. vacuum pump, the existing alternator layout must match before ordering.

Application and Buying Notes

Before ordering, match the Bosch part number 1986A00943 against the vehicle’s existing alternator and confirm the unit is a 12V, 150A alternator. The alternator is listed as type excl. vacuum pump, so the presence or absence of a vacuum pump arrangement is a key check and should not be assumed from the vehicle badge alone.

The fastening type is listed as single pivoted lever, which affects physical mounting and alignment. If the old unit is being replaced, compare the mounting style, belt alignment and connector layout carefully, and inspect the V-Belt/V-Ribbed Belt at the same time if it shows wear or contamination.

The stated features point to a corrosion-resistant unit built from high-quality raw materials with a reduction drive. Those are useful construction details, but they do not replace application checking. Confirm the alternator current rating, mounting style and vehicle-specific fitment before purchase, particularly on Mercedes-Benz applications where several variants may exist across model years.

This alternator is supplied as one each and carries a 12 month warranty. That gives you a clear purchase basis, but warranty cover does not confirm fitment. The safest approach is to use the part number, the 12V 150A rating and the excl. vacuum pump detail together when comparing with the original part.

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 1986A00943 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 Single pivoted lever, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 20, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00943, 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 23.9, Packaging height 20, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 150A. Part number 1986A00943 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 1986A00943, 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 150 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 2004, MERCEDES-BENZ C-CLASS 2005, MERCEDES-BENZ C-CLASS 2006. 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 fitment using the part number 1986A00943, the 12V 150A rating, the single pivoted lever mounting style and the excl. vacuum pump application detail before ordering.

FAQ

What is the part number for this Bosch alternator?

The listed part number is 1986A00943. For this listing, part number 1986A00943 is the main reference point. Listed output rating is 150. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2004, MERCEDES-BENZ C-CLASS 2005. These details should still be checked against the original unit before ordering.

What voltage and charge current does this alternator have?

It is a 12V alternator with a 150A charge current. For this listing, part number 1986A00943 is the main reference point. Listed output rating is 150. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2004, MERCEDES-BENZ C-CLASS 2005. These details should still be checked against the original unit before ordering.

Does this alternator suit every Mercedes-Benz listed in the fitment preview?

No. The fitment preview shows Mercedes-Benz applications, including C-Class, CLK, M-Class and SLK references, but you should still confirm the part number and the excl. vacuum pump detail against the vehicle’s original unit. For this listing, part number 1986A00943 is the main reference point. Listed output rating is 150. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2004, MERCEDES-BENZ C-CLASS 2005. These details should still be checked against the original unit before ordering.

What mounting style is listed for this alternator?

The fastening type is listed as single pivoted lever. For this listing, part number 1986A00943 is the main reference point. Listed output rating is 150. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2004, MERCEDES-BENZ C-CLASS 2005. These details should still be checked against the original unit before ordering.

Is there a recommended additional repair with this alternator?

Yes. The listed recommended additional repair is a V-Belt/V-Ribbed Belt. For this listing, part number 1986A00943 is the main reference point. Listed output rating is 150. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2004, MERCEDES-BENZ C-CLASS 2005. These details should still be checked against the original unit before ordering.

What warranty is listed for this Bosch alternator?

The listed warranty is 12 months. For this listing, part number 1986A00943 is the main reference point. Listed output rating is 150. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2004, MERCEDES-BENZ C-CLASS 2005. These details should still be checked against the original unit before ordering.