Bosch Alternator 12V 120A 0124515052

Bosch Alternator 12V 120A, part number 0124515052, is a new alternator supplied as each unit with an internal regulator and a 120 amp charge current. It is listed as an alternator type excluding vacuum pump, so the application needs to match that configuration before purchase.

The unit uses a 6 groove pulley with multi-belt pulley arrangement, a 50mm pulley outside diameter, and a twin leg alternator mount with double pivot lever fastening. Those mounting and pulley details are important when checking interchange, especially where the original unit has the same 12V layout but different bracket or pulley specifications.

It is manufactured in South Africa and carries a one year warranty. The listed Pin Code is IR122, and the recommended additional repair is a V-Belt/V-Ribbed Belt where the drive system is being serviced at the same time.

For buyers comparing replacements, the key identifiers here are Bosch brand, 12V voltage, 120A output, and part number 0124515052. Matching those details against the removed unit is the safest way to confirm whether this alternator is the correct unit for the vehicle application.

Key Features

• Bosch brand alternator
• 12V system with 120A charge current
• New unit, supplied each
• Internal regulator
• 6 groove pulley with multi-belt pulley
• Twin leg mount with double pivot lever fastening

Specifications

• Part number: 0124515052
• Voltage: 12V
• Charge current / power rating: 120A
• Regulator type: Internal
• Pulley section: 6 groove
• Pulley outside diameter: 50mm
• Mount type: Twin leg
• Fastening type: Double pivot lever

Fitment guidance

• Fitment preview includes BMW 3 applications from 2000 through 2005.
• Fitment group shown: BMW and BMW 3.
• Confirm the removed alternator matches the 12V, 120A, 6 groove, twin leg, and excluded vacuum pump configuration before ordering.

Application and Buying Notes

When replacing an alternator, the most useful checks are the part number 0124515052, the 12V operating voltage, and the 120A output rating. If the original unit differs in pulley arrangement, mount style, or regulator type, the replacement may not interchange even where the vehicle family appears similar.

This Bosch unit uses a 6 groove multi-belt pulley with a 50mm outside diameter and a twin leg mount. Those details matter because alternator fitment is often determined by the bracket shape, belt drive layout, and fastening style rather than by brand name alone.

The alternator is listed as excluding a vacuum pump, so that point needs to be checked carefully on the vehicle and on the removed part. If the existing alternator includes a vacuum pump or a different rear housing arrangement, this unit should not be assumed to suit.

A one year warranty is listed for this part, and it is supplied new rather than remanufactured. If you are renewing the charging system, the recommended additional repair is the V-Belt/V-Ribbed Belt, which is sensible to inspect when the drive system has wear or contamination.

The listed fitment preview references BMW 3 applications from 2000 to 2005, but that should still be treated as a guide only. Always verify the removed alternator against the Bosch part number, pin code IR122, and the physical mounting and pulley details before finalising the order.

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 0124515052 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) 120, Pulley Section 6 Groove, Suits Unit Make Bosch, Alternator Mount Twin Leg, Alternator Charge Current [A] 120, Pulleys with multi-belt pulley, Number of grooves 6.

Additional published details for cross-checking include Packaging length 23.9, Packaging height 20, Product Group 2 ALTERNATORS, Part No. 0124515052, Brand BOSCH, Description Bosch Alternator 12V 120A, Pin Code IR122, Pulley Outside Diameter 50mm, Regulator Type Internal.

Bosch Alternator 12V 120A. Part number 0124515052 should be checked first. Listed voltage is 12. Listed output rating is 120. 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 0124515052, 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 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include BMW 3, BMW 3 2000, BMW 3 2001, BMW 3 2002. 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: Please confirm compatibility by matching Bosch part number 0124515052, 12V voltage, 120A output, 6 groove pulley, twin leg mount, and the excluded vacuum pump configuration against the vehicle and the removed alternator.

FAQ

What is the part number for this alternator?

The listed Bosch part number is 0124515052.

What voltage and output does it have?

It is a 12V alternator with a 120A charge current rating.

Is this a new or remanufactured unit?

It is listed as new.

Does it have an internal regulator?

Yes, the regulator type is listed as internal.

What pulley setup does it use?

It has a 6 groove pulley with a multi-belt pulley arrangement and a 50mm pulley outside diameter.

What fitment information is shown?

The fitment preview shows BMW and BMW 3 applications, including BMW 3 listings from 2000 through 2005. Final fitment should still be confirmed against the part number and physical details.