Bosch Alternator 12V 100A BXH1262A

This Bosch alternator is a 12V, 100A unit supplied new under part number BXH1262A. It uses an internal regulator, a 6 groove pulley, and a twin leg alternator mount with 56mm inside mounting legs and a 184mm centre-to-centre mount measurement.

It is listed as suitable for Holden Astra, Barina and Vectra applications with Z18XE, C16SE, C14NZ and C22SEL engines. The fitment information provided also includes Holden Astra applications across multiple model years, but the exact vehicle match still needs to be confirmed against the part number, engine code and mounting details before purchase.

This alternator is a Bosch-branded rotating electrical component, sold each, with a stated weight of 6.84kg. The pulley outside diameter is 55mm and the adjusting hole diameter is M8 x 1.25, which are both useful checkpoints when comparing to the unit already fitted to the vehicle.

Key Features

• 12V alternator with 100A output
• Internal regulator
• 6 groove pulley
• Twin leg alternator mount
• New unit, not remanufactured
• Bosch part number BXH1262A

Specifications

• Brand: Bosch
• Product type: Alternator
• Voltage: 12V
• Power rating: 100A
• Part No.: BXH1262A
• Unit of measure: Each
• Warranty: One year
• Regulator type: Internal

Fitment guidance

• Listed for Holden Astra, Barina and Vectra applications
• Listed for vehicles with Z18XE, C16SE, C14NZ and C22SEL engines
• Fitment data also includes Holden Astra applications across multiple years
• Confirm the alternator mount, pulley type and part number before ordering

Application and Buying Notes

Before buying, compare the Bosch part number BXH1262A with the alternator on the vehicle and check the mounting layout carefully. The key physical measurements here are the 56mm inside mounting legs, 184mm centre-to-centre mount spacing, 10mm pivot hole diameter and M8 x 1.25 adjusting hole diameter. If those points do not match, the unit may not install correctly even if the vehicle model appears similar.

The pulley detail matters as well. This alternator uses a 6 groove pulley with a 55mm outside diameter, so the belt arrangement on the vehicle needs to match that setup. A belt or pulley mismatch can create installation issues, noise or charging problems, so it is worth checking the existing unit rather than relying on the model name alone.

The internal regulator is another important compatibility checkpoint. Some charging systems use different regulator arrangements, and this alternator is specified with an internal regulator for the application it suits. The unit is a 12V, 100A Bosch alternator, so it is intended for vehicles that require that charging specification rather than a lower-output or different-regulated unit.

This is a new alternator with a one year warranty, and it weighs 6.84kg. That weight and the listed Bosch construction details can be helpful when comparing against a removed unit, especially if you are checking that the replacement is the same style and configuration rather than simply a close-looking alternative.

For Holden applications, engine code is one of the clearest ways to narrow the correct fitment. The listed engine codes are Z18XE, C16SE, C14NZ and C22SEL, and those should be matched to the vehicle wherever possible. If the car has been modified, has an engine swap, or uses non-standard charging components, the part number and mounting measurements become even more important.

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 BXH1262A 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 56mm, Pivot Hole Diameter 10, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 184mm, Weight 6.84kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. BXH1262A, Brand BOSCH, Description Bosch Alternator 12V 100A, Adjusting Hole Diameter M8 x 1.25, Pin Code IR189, Power Rating (Amp) 100, Pulley Section 6 Groove, Suits Unit Make Bosch, Alternator Mount Twin Leg.

Bosch Alternator 12V 100A. Part number BXH1262A should be checked first. Listed voltage is 12. Listed output rating is 100. 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 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXH1262A, 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 100 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment by matching Bosch part number BXH1262A, the listed engine code, the twin leg mounting pattern, the 6 groove pulley, and the 12V 100A specification against the vehicle before ordering.

FAQ

What part number is this Bosch alternator?

The part number listed is BXH1262A.

What voltage and output does it have?

It is a 12V alternator with a 100A power rating.

Is the regulator built in?

Yes. The regulator type is listed as internal.

What pulley setup does it use?

It uses a 6 groove pulley with a 55mm outside diameter.

Which vehicles are listed for this alternator?

It is listed for Holden Astra, Barina and Vectra applications, with engine codes Z18XE, C16SE, C14NZ and C22SEL.

What should I check before ordering?

Check the Bosch part number BXH1262A, engine code, twin leg mount, 56mm inside mounting legs, 184mm mount centre-to-centre, 10mm pivot hole, M8 x 1.25 adjusting hole, and 6 groove pulley before ordering.