Bosch Alternator 12V 85A BXF1259A

This Bosch alternator is a new 12V, 85A rotating electrical unit supplied as each, with part number BXF1259A and pin code IR110. It uses an internal regulator and a 3 groove pulley, with a pulley outside diameter of 57mm.

Key mounting dimensions include 65mm inside mounting legs, M10 pivot hole diameter, M10 adjusting hole diameter, and 187mm mount centre to centre. The alternator mount is listed as twin leg, which is an important check before ordering a replacement.

At 9.21kg, this unit sits in the heavier class of alternators and is built for standard 12V charging applications. It is a Bosch-branded new part with a one year warranty and is identified for use in vehicles where the matching mounting and electrical details line up.

The listed features include corrosion resistance, long life materials, and a reduction drive designed to maintain continual speeds for easier starting. Those are useful construction and operating details, but the correct fit still depends on confirming the part number and the vehicle application details carefully.

Key Features

• New Bosch alternator
• 12V output with 85A power rating
• Internal regulator
• 3 groove pulley
• Twin leg alternator mount
• Corrosion resistant construction

Specifications

• Part No.: BXF1259A
• Brand: Bosch
• Voltage: 12
• Power rating: 85A
• Regulator type: Internal
• Pulley section: 3 groove
• Pulley outside diameter: 57mm
• Inside mounting legs: 65mm

Fitment notes

• Fitment data supplied includes Ford and Mitsubishi applications.
• Listed Ford applications include F-150, Fairlane, Fairmont, Falcon and LTD.
• Listed Mitsubishi applications include Magna.
• Sample application coverage includes Ford F-150 1991 to 1996 and Mitsubishi Magna 1987 to 1989, with additional year coverage also shown in the supplied fitment data.
• Confirm the vehicle’s alternator mount, pulley configuration and mounting dimensions before ordering.

Application and Buying Notes

The most important buying check for this alternator is the part number BXF1259A, followed by the mounting layout and pulley details. With 65mm inside mounting legs, a twin leg mount, M10 pivot and adjusting holes, and a 187mm mount centre to centre, this unit needs to match the existing bracket arrangement closely.

The 12V, 85A output is suitable only where that charging specification is required. If the vehicle was fitted with a different amperage alternator, the electrical and physical match both need to be verified rather than assuming interchangeability.

The 3 groove pulley with a 57mm outside diameter is another critical detail. Belt alignment and belt profile must suit the existing drive setup, especially where the vehicle has been converted, repaired, or fitted with non-standard accessories.

Because this alternator is listed for multiple Ford and Mitsubishi applications, use the vehicle details as a guide only and check the alternator itself where possible. Comparing the part number, pin code IR110, regulator type, mount style, and pulley section is the safest way to avoid ordering the wrong unit.

The one year warranty applies to this Bosch new alternator, but warranty coverage does not replace the need to confirm fitment first. A careful check of the mounting points, electrical connections, and belt drive arrangement will save time during installation.

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 BXF1259A 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 M10, Pulley Outside Diameter 57mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 187mm, Weight 9.21kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. BXF1259A, Brand BOSCH, Description Bosch Alternator 12V 85A, Adjusting Hole Diameter M10, Pin Code IR110, Power Rating (Amp) 85, Pulley Section 3 Groove, Suits Unit Make Bosch, Alternator Mount Twin Leg.

Bosch Alternator 12V 85A. Part number BXF1259A 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 3 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXF1259A, 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.

Available application references include FORD F-150, FORD F-150 1991, FORD F-150 1992, FORD F-150 1993, MITSUBISHI MAGNA, MITSUBISHI MAGNA 1987. 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: Always confirm compatibility by matching part number BXF1259A, pin code IR110, the twin leg mount, and the 12V 85A specifications against the vehicle application and the removed unit before purchase.

FAQ

What is the part number for this alternator?

The part number is BXF1259A.

Is this a new or remanufactured alternator?

This alternator is listed as new.

What are the electrical specifications?

It is a 12V alternator with an 85A power rating and an internal regulator.

What pulley details are listed?

The alternator has a 3 groove pulley with a 57mm outside diameter.

What mounting measurements should be checked?

Check the 65mm inside mounting legs, 187mm mount centre to centre, and the M10 pivot and adjusting hole diameters.

Which vehicles are mentioned in the fitment data?

The supplied fitment data mentions Ford applications including F-150, Fairlane, Fairmont, Falcon and LTD, plus Mitsubishi Magna applications.