Bosch Alternator 12V 180A Pad Mount 5 Groove Part No. 0125811109

This Bosch alternator is a new 12V unit rated at 180A and identified by part number 0125811109. It is listed as an alternator excluding vacuum pump, with a pad mount, direct fastening arrangement, internal regulator and a 5 groove pulley.

For applications that call for strong charging output, the 180A charge current and 54mm pulley outside diameter are the key checks. The unit is made in Spain and supplied as each, with one year warranty coverage.

Bosch lists this unit under rotating electrical and notes it suits Bosch application requirements. The design includes insulated return: no, which is important to confirm against the original unit before ordering. Where the original alternator uses a V-belt or V-ribbed belt arrangement, Bosch also recommends checking those related repairs at the same time.

The published details also note high output at low engine speeds, high tech regulators and rectifiers, and OE-standard production. Those are useful points when comparing the replacement to the vehicle’s original charging system, but the main fitment checks remain the part number, mounting style, pulley style and whether the vehicle uses an alternator without a vacuum pump.

Key Features

• 12V alternator with 180A charge current
• New Bosch unit, part number 0125811109
• Pad mount with direct fastening
• 5 groove pulley, 54mm outside diameter
• Internal regulator
• Alternator type: excl. vacuum pump

Specifications

• Voltage: 12V
• Power rating: 180A
• Alternator charge current: 180A
• Type: Alternator
• Unit of measure: Each
• Brand: Bosch
• Part No.: 0125811109
• Pin code: IR169

Fitment details provided

• Supported makes and application groups include Volvo, Volvo S60, Volvo S80, Volvo V60, Volvo XC60 and Volvo XC70.
• Sample application coverage is listed for Volvo S60 model years including 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018.
• The fitment preview also shows Volvo S80 coverage, including 2006 as a sample year.
• Use the part number 0125811109 and the original alternator layout to confirm match before purchase.

Application and Buying Notes

Before ordering, compare the part number 0125811109 with the alternator currently fitted to the vehicle. That is the most reliable starting point, especially when the vehicle may have been fitted with more than one charging system during its life. The listed unit is a 12V, 180A Bosch alternator with a pad mount and direct fastening, so the mounting layout must match the original unit.

The pulley setup is another important checkpoint. This alternator uses a 5 groove pulley with a 54mm outside diameter, and Bosch also notes it is an alternator type excl. vacuum pump. If the original alternator uses a different pulley section, a different offset, or a vacuum pump arrangement, this unit should not be assumed to suit without checking the vehicle details carefully.

The internal regulator, insulated return set to no, and the one year warranty are all useful specification points when comparing replacements. These details matter because charging system parts need to match the vehicle’s electrical design, not just the physical shape. If the existing alternator has different electrical connections or return arrangement, confirm compatibility before fitting.

Bosch notes this alternator is manufactured to the same rigorous production standard as OE parts and is intended to provide strong charging performance, including at low engine speeds. That said, the condition of the battery, belt system and associated charging components can affect the result. Bosch also recommends V-belt and V-ribbed belt related repairs where relevant, so it is sensible to inspect those parts at the same time if wear is present.

If you are working on a Volvo application, use the provided model coverage as a guide only and confirm the exact year and engine arrangement against the vehicle. The fitment preview includes Volvo S60, S80, V60, XC60 and XC70 groups, but the final check should still be the part number, mount type and pulley specification on the existing unit.

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 0125811109 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, Power Rating (Amp) 180, Pulley Section 5 Groove, Suits Unit Make Bosch, Alternator Mount Pad, Insulated Return No, Fastening Type Direct fastening, Recommended additional repairs V-Belt/V-Ribbed Belt.

Additional published details for cross-checking include Packaging width 18.5, Manufactured in Spain, Product Group 1 ROTATING ELECTRICAL, Part No. 0125811109, Brand BOSCH, Description Bosch Alternator 12V 180A, Pin Code IR169, Pulley Outside Diameter 54mm, Regulator Type Internal, Voltage 12.

Bosch Alternator 12V 180A. Part number 0125811109 should be checked first. Listed voltage is 12. Listed output rating is 180. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Compatibility note: Please confirm fitment by matching Bosch part number 0125811109, the 12V 180A rating, pad mount, 5 groove pulley, internal regulator and excl. vacuum pump layout against the vehicle’s original alternator and application details before purchase.

FAQ

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What is the part number for this Bosch alternator?

The part number is 0125811109.

What voltage and output does it have?

It is a 12V alternator with a 180A power rating and 180A alternator charge current.

What pulley specification does it use?

It has a 5 groove pulley with a 54mm pulley outside diameter.

Does it have an internal regulator?

Yes, the regulator type is listed as internal.

Which vehicle groups are shown in the fitment information?

The provided fitment information lists Volvo, Volvo S60, Volvo S80, Volvo V60, Volvo XC60 and Volvo XC70 application groups, with sample Volvo S60 year coverage and a Volvo S80 sample year. Confirm the exact application against the vehicle and part number before ordering.