Bosch Alternator 12V 140A 1986A00654

The Bosch Alternator 12V 140A with part number 1986A00654 is a rotating electrical component supplied as a single each unit. It is rated at 12 volts and 140 amps, which are the key identifiers to check against the vehicle’s charging system requirements before ordering.

This alternator is listed under Bosch and carries a 12 month warranty. The stated description is Bosch Alternator 12V 140A, so the voltage, amperage and part number should be matched carefully to the vehicle application and the existing unit where possible.

The fitment information provided includes Audi, Skoda and Volkswagen applications, with model coverage shown across A1, A3, A4, TT, Fabia, Octavia, Superb, Yeti, Caddy, Eos, Golf, Jetta, Passat and Tiguan families. Because alternators can vary within the same model range, the part number 1986A00654 remains the most reliable identifier to confirm before purchase.

Key Features

• Bosch rotating electrical alternator
• 12V system voltage
• 140A power rating
• Part number 1986A00654
• Supplied as each
• 12 month warranty

Specifications

• Brand: Bosch
• Product type: Alternator
• Voltage: 12
• Power rating: 140 amp
• Part number: 1986A00654
• Unit of measure: Each
• Warranty: 12 months
• Product group: Rotating Electrical

Verified fitment coverage

• Audi A1
• Audi A3
• Audi A4
• Audi TT
• Skoda Fabia
• Skoda Octavia
• Skoda Superb
• Skoda Yeti

Application and Buying Notes

Before ordering, confirm the existing alternator matches the Bosch part number 1986A00654 and the listed electrical rating of 12V 140A. That combination is the strongest buying check here, especially on vehicles that may carry more than one charging system option within the same model range.

The supplied fitment coverage spans several Audi, Skoda and Volkswagen models, but the listings shown are model-family based rather than a full vehicle-by-vehicle cross-reference. For that reason, matching the part number on the old unit, checking the vehicle build details, and comparing connector and mounting arrangement remain important steps.

The stated 140 amp output is a useful guide when replacing an alternator that must meet the vehicle’s charging demand. It should be treated as a direct specification to compare, not an estimate or upgrade claim. If the vehicle previously used a different amperage alternator, the correct replacement should be selected on application details rather than appearance alone.

This alternator is sold as a single each unit and carries a 12 month warranty. Keep in mind that alternator replacement jobs can be affected by engine variant, factory electrical package, and accessory equipment, so the safest approach is to verify all available identifiers before fitting or booking the work.

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 1986A00654 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, Voltage 12, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00654, Brand BOSCH, Description Bosch Alternator 12V 140A, Power Rating (Amp) 140.

Additional published details for cross-checking include Product Group 2 ALTERNATORS.

Bosch Alternator 12V 140A. Part number 1986A00654 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.

For part number 1986A00654, 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 FABIA, SKODA FABIA 2010. 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 Bosch part number 1986A00654, 12V electrical system details, 140A output, and the vehicle application details shown for Audi, Skoda and Volkswagen fitments before purchase.

FAQ

What is the part number for this alternator?

The part number is 1986A00654. For this listing, part number 1986A00654 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include AUDI A1, AUDI A1 2010, AUDI A1 2011. These details should still be checked against the original unit before ordering.

What voltage and amperage is this alternator rated at?

It is rated at 12 volts and 140 amps. For this listing, part number 1986A00654 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include AUDI A1, AUDI A1 2010, AUDI A1 2011. These details should still be checked against the original unit before ordering.

Which brand is this alternator?

The brand is Bosch. For this listing, part number 1986A00654 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include AUDI A1, AUDI A1 2010, AUDI A1 2011. These details should still be checked against the original unit before ordering.

What warranty is supplied with this alternator?

It carries a 12 month warranty. For this listing, part number 1986A00654 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include AUDI A1, AUDI A1 2010, AUDI A1 2011. These details should still be checked against the original unit before ordering.

Which vehicle makes are listed with this alternator?

The fitment coverage provided includes Audi, Skoda and Volkswagen applications. For this listing, part number 1986A00654 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include AUDI A1, AUDI A1 2010, AUDI A1 2011. These details should still be checked against the original unit before ordering.

What should I check before buying?

Confirm the Bosch part number 1986A00654, the 12V 140A specification, and the vehicle application details before ordering. For this listing, part number 1986A00654 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include AUDI A1, AUDI A1 2010, AUDI A1 2011. These details should still be checked against the original unit before ordering.