Bosch Alternator 12V 85A BXF1255A

The Bosch Alternator 12V 85A, part number BXF1255A, is a new alternator for 12-volt charging systems with an 85 amp power rating. It uses an internal regulator, a twin leg alternator mount, and a pulley with a 70 mm outside diameter and A section pulley profile.

Key mounting dimensions include 65 mm inside mounting legs, M10x1.25 pivot hole diameter, M10x1.25 adjusting hole diameter, and 187 mm mount centre to centre. These measurements matter when checking replacement suitability, especially where bracket layout and belt alignment need to match the original unit.

This unit is listed under Bosch with OEM number 0986AN0518, and it weighs 5.06 kg. It is covered by a one year warranty and is sold as each, which makes it suitable for buyers replacing a single alternator on a compatible application rather than changing a full charging system setup.

Key Features

• 12V alternator with 85A power rating
• Internal regulator
• Twin leg alternator mount
• 70 mm pulley outside diameter
• A section pulley profile
• New unit

Specifications

• Brand: Bosch
• Part No.: BXF1255A
• OEM Number: 0986AN0518
• Voltage: 12
• Power Rating: 85 amp
• Regulator Type: Internal
• Alternator Mount: Twin Leg
• Inside Mounting Legs: 65 mm

Known fitment applications

• FORD Capri
• FORD Fairlane
• FORD Fairmont
• FORD Falcon
• FORD LTD

Application and Buying Notes

Before ordering, compare the Bosch part number BXF1255A and OEM number 0986AN0518 with the alternator you are replacing. The mounting layout is specific: twin leg mount, 65 mm inside mounting legs, 187 mm centre-to-centre mounting, and M10x1.25 pivot and adjusting holes. Those dimensions are the first checks to make if the vehicle has been modified or if another alternator has been fitted previously.

The 12V, 85A rating is the key electrical detail here. It suits a 12-volt charging system and is intended as a direct replacement for an alternator with the same output and regulator arrangement. Because this unit has an internal regulator, it is important to confirm the existing charging setup rather than assuming any alternator with the same pulley size will interchange.

The pulley details also need attention. This alternator has a 70 mm outside diameter pulley with an A section profile, so belt type and alignment should be checked against the current installation. A mismatch here can affect belt tracking and charging performance even if the brackets appear to line up.

The listed fitment points to Ford Capri, Fairlane, Fairmont, Falcon and LTD applications, but those model families cover different years and configurations. Use the part number, OEM number, mounting dimensions, pulley section, and regulator type together when confirming suitability for your vehicle or for the unit being replaced.

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 BXF1255A 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 One Year, Inside Mounting Legs 65mm, Pivot Hole Diameter M10x1.25, Pulley Outside Diameter 70mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 187mm, OEM Number 0986AN0518.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. BXF1255A, Brand BOSCH, Description Bosch Alternator 12V 85A, Adjusting Hole Diameter M10x1.25, Pin Code IR110, Power Rating (Amp) 85, Pulley Section A, Suits Unit Make Bosch.

Bosch Alternator 12V 85A. Part number BXF1255A should be checked first. Listed voltage is 12. Listed output rating is 85. These details form the core reference points used by parts interpreters when confirming the correct replacement.

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

For part number BXF1255A, 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 85 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment against part number BXF1255A, OEM number 0986AN0518, mounting measurements, pulley type, and the vehicle application before purchase. Model names alone are not enough to guarantee compatibility.

FAQ

What is the voltage and output of this alternator?

It is a 12V alternator with an 85 amp power rating. For this listing, part number BXF1255A is the main reference point. Listed voltage is 12. Listed output rating is 85. Published fitment references include FORD CAPRI, FORD CAPRI 1989, FORD CAPRI 1990. These details should still be checked against the original unit before ordering.

Is the regulator internal or external?

This alternator has an internal regulator. For this listing, part number BXF1255A is the main reference point. Listed voltage is 12. Listed output rating is 85. Published fitment references include FORD CAPRI, FORD CAPRI 1989, FORD CAPRI 1990. These details should still be checked against the original unit before ordering.

What part number should I use to match it?

The part number is BXF1255A. The OEM number listed is 0986AN0518. For this listing, part number BXF1255A is the main reference point. Listed voltage is 12. Listed output rating is 85. Published fitment references include FORD CAPRI, FORD CAPRI 1989, FORD CAPRI 1990. These details should still be checked against the original unit before ordering.

What mounting details are provided?

It has a twin leg alternator mount, 65 mm inside mounting legs, 187 mm mount centre to centre, and M10x1.25 pivot and adjusting holes. For this listing, part number BXF1255A is the main reference point. Listed voltage is 12. Listed output rating is 85. Published fitment references include FORD CAPRI, FORD CAPRI 1989, FORD CAPRI 1990. These details should still be checked against the original unit before ordering.

What pulley details are listed?

The pulley outside diameter is 70 mm and the pulley section is A. For this listing, part number BXF1255A is the main reference point. Listed voltage is 12. Listed output rating is 85. Published fitment references include FORD CAPRI, FORD CAPRI 1989, FORD CAPRI 1990. These details should still be checked against the original unit before ordering.

What vehicles are listed in the fitment information?

The fitment information lists Ford Capri, Ford Fairlane, Ford Fairmont, Ford Falcon and Ford LTD. For this listing, part number BXF1255A is the main reference point. Listed voltage is 12. Listed output rating is 85. Published fitment references include FORD CAPRI, FORD CAPRI 1989, FORD CAPRI 1990. These details should still be checked against the original unit before ordering.