Bosch Alternator 12V 220A 1986A00769

This Bosch alternator is a 12V unit with a 220A power rating, supplied new and identified by part number 1986A00769. It uses a pad alternator mount with direct fastening, an internal regulator, and a 6 groove pulley, so it is important to compare the mounting style and drive arrangement on the vehicle before ordering.

The alternator is listed with clockwise rotation, a pulley outside diameter of 50mm, an inside mounting leg dimension of 56mm, and a mount leg thickness of 70mm. Those dimensions are the key checks when matching the unit to an existing application, especially where access, bracket style, or belt alignment matters.

It is described as an alternator type excl. vacuum pump and is made by Bosch in Hungary. The unit carries a 12 month warranty and weighs 8.86kg, which can help when comparing against the removed part or confirming handling and installation requirements.

Key Features

• 12V alternator with 220A output
• Bosch part number 1986A00769
• New unit, not remanufactured
• Internal regulator
• 6 groove pulley
• Clockwise rotation

Specifications

• Brand: Bosch
• Product type: Alternator
• Voltage: 12V
• Power rating: 220A
• Alternator charge current: 220A
• Part no.: 1986A00769
• Regulator type: Internal
• Rotation: CW

Fitment guidance

• Mercedes-Benz S-Class applications are listed in the supplied fitment data, including model years 2005 through 2013.
• Mercedes-Benz Viano applications are also listed, including 2007.
• Fitment is tied to the part number and the application details, so the removed alternator should be matched by mounting style, pulley layout, rotation, and electrical specification before purchase.

Application and Buying Notes

Before ordering, compare the Bosch part number 1986A00769 with the removed alternator and check that the vehicle uses a 12V, 220A unit with an internal regulator. The mounting style also matters here: this alternator is a pad mount with direct fastening, so the bracket and bolt arrangement need to line up with the existing setup.

The pulley setup is another important checkpoint. This unit has a 6 groove pulley, a 50mm pulley outside diameter, and clockwise rotation. If the belt type, groove count, or rotation differs from what is fitted now, the alternator may not suit the application even if the electrical rating looks correct.

The alternator is listed as excl. vacuum pump, which is a useful distinction on vehicles that may use different front-end accessory arrangements. The inside mounting legs are 56mm and the mount leg thickness is 70mm, so those dimensions should be compared carefully where physical clearance and bracket fit are critical.

Because alternators can vary within the same vehicle family, the most reliable check is the old part itself. Compare the part number, mount type, pulley specification, and regulator type, then confirm the application against the vehicle details. If there is any uncertainty, take measurements off the original unit before installing the replacement.

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 1986A00769 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, Mount Leg Thickness 70mm, Power Rating (Amp) 220, Pulley Section 6 Groove, Rotation CW, Voltage 12, New / Reman. New, Fastening Type Direct fastening.

Additional published details for cross-checking include Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 20, Manufactured in Hungary, Product Group 2 ALTERNATORS, Part No. 1986A00769, Brand BOSCH, Description Bosch Alternator 12V 220A, Inside Mounting Legs 56mm, Pin Code IR201.

Bosch Alternator 12V 220A. Part number 1986A00769 should be checked first. Listed voltage is 12. Listed output rating is 220. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Pad. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number 1986A00769, 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 220 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment using part number 1986A00769, the vehicle application details, and the physical mounting and pulley specifications before purchase.

FAQ

What is the part number for this Bosch alternator?

The part number is 1986A00769. For this listing, part number 1986A00769 is the main reference point. Listed voltage is 12. Listed output rating is 220. Published fitment references include MERCEDES-BENZ S-CLASS, MERCEDES-BENZ S-CLASS 2005, MERCEDES-BENZ S-CLASS 2006. These details should still be checked against the original unit before ordering.

What voltage and output does this alternator have?

It is a 12V alternator with a 220A power rating. For this listing, part number 1986A00769 is the main reference point. Listed voltage is 12. Listed output rating is 220. Published fitment references include MERCEDES-BENZ S-CLASS, MERCEDES-BENZ S-CLASS 2005, MERCEDES-BENZ S-CLASS 2006. These details should still be checked against the original unit before ordering.

Does this alternator have an internal regulator?

Yes. The regulator type is internal. For this listing, part number 1986A00769 is the main reference point. Listed voltage is 12. Listed output rating is 220. Published fitment references include MERCEDES-BENZ S-CLASS, MERCEDES-BENZ S-CLASS 2005, MERCEDES-BENZ S-CLASS 2006. These details should still be checked against the original unit before ordering.

What pulley configuration does it use?

It has a 6 groove pulley with a 50mm outside diameter. For this listing, part number 1986A00769 is the main reference point. Listed voltage is 12. Listed output rating is 220. Published fitment references include MERCEDES-BENZ S-CLASS, MERCEDES-BENZ S-CLASS 2005, MERCEDES-BENZ S-CLASS 2006. These details should still be checked against the original unit before ordering.

Which vehicles are listed in the fitment data?

Mercedes-Benz S-Class applications from 2005 to 2013 are listed, along with Mercedes-Benz Viano 2007. For this listing, part number 1986A00769 is the main reference point. Listed voltage is 12. Listed output rating is 220. Published fitment references include MERCEDES-BENZ S-CLASS, MERCEDES-BENZ S-CLASS 2005, MERCEDES-BENZ S-CLASS 2006. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number 1986A00769 is the main reference point. Listed voltage is 12. Listed output rating is 220. Published fitment references include MERCEDES-BENZ S-CLASS, MERCEDES-BENZ S-CLASS 2005, MERCEDES-BENZ S-CLASS 2006. These details should still be checked against the original unit before ordering.