Bosch Alternator 12V 140A 1986A00906

This Bosch alternator is a new 12V, 140A rotating electrical unit, supplied as each and identified by part number 1986A00906. It is listed as an alternator type excl. vacuum pump, with a clockwise rotation, so the physical design and drive direction are specific points to confirm before ordering.

The unit uses a 6 groove pulley with a 49mm outside diameter, 127mm mount centre-to-centre, 61mm inside mounting legs, and a quad leg alternator mount with double pivot lever fastening. Those mounting and pulley details matter as much as the electrical rating when checking replacement suitability.

Manufactured in Spain and backed by a 12 month warranty, this Bosch alternator is described as corrosion resistant and made from high quality raw materials. It is rated at 140A charge current and is intended to suit applications where the original unit matches the same physical and electrical specification.

Fitment information supplied for this part includes selected AUDI, SKODA and VOLKSWAGEN applications, including Audi A1, Audi A3, Skoda Rapid, Skoda Yeti, Volkswagen Golf and Volkswagen Tiguan. Even with that application coverage, the safest purchase check remains the part number, mounting style, pulley arrangement and voltage rating.

Key Features

• New Bosch alternator
• 12V 140A output
• 6 groove pulley
• Clockwise rotation
• Quad leg mount
• Double pivot lever fastening

Specifications

• Part number: 1986A00906
• Brand: Bosch
• Type: Alternator
• Voltage: 12V
• Power rating: 140A
• Alternator charge current: 140A
• Rotation: CW
• Alternator type: excl. vacuum pump

Fitment references supplied

• AUDI A1
• AUDI A3
• SKODA RAPID
• SKODA YETI
• VOLKSWAGEN GOLF
• VOLKSWAGEN TIGUAN

Application and Buying Notes

Before ordering, compare the part number 1986A00906 with the number on the alternator being replaced. The part number is the most dependable starting point, particularly where the vehicle may have multiple charging system variants or different mount and pulley combinations.

Check the mounting arrangement carefully. This unit is listed with a quad leg alternator mount, double pivot lever fastening, 127mm mount centre-to-centre, 61mm inside mounting legs, and M8x1.25 / 9 adjusting and pivot holes. If any of those points differ from the vehicle’s original alternator, the part may not be the correct physical match.

The pulley specification is equally important. This alternator has a 6 groove pulley with a 49mm outside diameter and clockwise rotation. Matching the pulley section, diameter and rotation helps avoid belt alignment issues and unnecessary rework during installation.

The unit is rated at 12V and 140A, and it is listed as an alternator type excl. vacuum pump. That means the charging output and the overall unit style must both align with the original application. It is also sensible to inspect the belt condition at the same time, as V-Belt or V-Ribbed Belt repairs are recommended additional work with this part.

Fitment references include Audi A1, Audi A3, Skoda Rapid, Skoda Yeti, Volkswagen Golf and Volkswagen Tiguan. Those references are useful as a guide, but they should be treated alongside the exact vehicle details, the existing alternator design and the physical mount and pulley measurements before purchase.

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 1986A00906 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, Inside Mounting Legs 61mm, Power Rating (Amp) 140, Pulley Section 6 Groove, Suits Unit Make Bosch, Alternator Mount Quad Leg, New / Reman. New, Fastening Type Double Pivot Lever.

Additional published details for cross-checking include Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 18.5, Manufactured in Spain, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00906, Brand BOSCH, Description Bosch Alternator 12V 140A, Adjusting Hole Diameter M8x1.25 / 9, Pivot Hole Diameter M8x1.25 / 9, Pulley Outside Diameter 49mm.

Bosch Alternator 12V 140A. Part number 1986A00906 should be checked first. Listed voltage is 12. Listed output rating is 140. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Quad Leg. 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 1986A00906, 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 140 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include AUDI A1, AUDI A1 2010, AUDI A1 2011, AUDI A1 2012, SKODA RAPID, SKODA RAPID 2012. 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 number 1986A00906, 12V system voltage, 140A output, clockwise rotation, 6 groove pulley, quad leg mount and the listed mounting dimensions against the vehicle’s original alternator and application details.

FAQ

Is this a new or remanufactured alternator?

It is listed as new.

What is the voltage and output rating?

This alternator is rated at 12V and 140A.

What part number should I compare before buying?

The listed part number is 1986A00906.

What pulley type does it use?

It uses a 6 groove pulley with a 49mm outside diameter.

What mounting style is listed for this alternator?

The alternator mount is listed as quad leg, with double pivot lever fastening, 127mm mount centre-to-centre, and 61mm inside mounting legs.

Which vehicle families are referenced for fitment?

The supplied fitment references include Audi A1 and A3, Skoda Rapid and Yeti, and Volkswagen Golf and Tiguan. Exact compatibility should still be checked against the original unit and vehicle details.