Bosch Alternator 12V 220A 0121813101

This Bosch alternator is a new 12V, 220A unit with part number 0121813101. It is a direct fastening alternator with a pad mount and an internal regulator, which are important checks when matching the unit to the vehicle’s charging system layout.

The alternator is supplied with a 6 groove multi-belt pulley, a pulley outside diameter of 50mm, and an alternator type listed as excluding vacuum pump. Those details matter because pulley style, groove count, and mounting arrangement all need to line up with the existing setup before fitment is attempted.

Bosch lists this unit as manufactured in Hungary and covered by a one year warranty. It is identified as a new rotating electrical part, with a charge current rating of 220A and voltage of 12V, so it suits applications that require a high-output alternator of that specification.

Key Features

• New Bosch alternator
• 12V, 220A output
• Internal regulator
• Direct fastening design
• Pad mount alternator
• 6 groove multi-belt pulley

Specifications

• Part number: 0121813101
• Brand: Bosch
• Product type: Alternator
• Voltage: 12V
• Power rating: 220A
• Charge current: 220A
• Regulator type: Internal
• Mount type: Pad

Application and Buying Notes

Before ordering, compare the part number 0121813101 with the alternator currently fitted to the vehicle. That is the most reliable way to confirm you are looking at the correct Bosch unit, especially where the charging system uses a 12V, 220A alternator with an internal regulator and pad mount arrangement.

Also check the pulley details closely. This alternator uses a 6 groove multi-belt pulley with a 50mm outside diameter, and Bosch lists it as a direct fastening unit that excludes a vacuum pump. If the belt layout, pulley groove count, or mounting style differs from the existing alternator, the part will not be a straightforward match.

The listed output is 220A, which is suitable for applications designed around that charging capacity. Matching output matters because alternator amperage, regulator type, and physical mounting all need to align with the vehicle’s electrical and mechanical setup. If the vehicle has different belt wear, a replacement V-belt or V-ribbed belt may also need attention at the same time, as recommended.

This is a new alternator and not a remanufactured unit, so it is intended as a direct replacement where the application details match. If there is any uncertainty, check the vehicle paperwork, the old unit’s label, and the mounting and pulley configuration before purchase. That is the safest way to avoid downtime and return freight.

Bosch identifies corrosion resistance and durable raw materials as part of the unit’s construction. Those qualities are relevant in service environments, but they do not replace the need to confirm fitment. The practical checks remain the part number, 12V system, 220A rating, 6 groove pulley, internal regulator, and pad mount style.

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 0121813101 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, Pulley Outside Diameter 50mm, Regulator Type Internal, Voltage 12, New / Reman. New, Fastening Type Direct fastening, Alternator Type excl. vacuum pump, Recommended additional repairs V-Belt/V-Ribbed Belt.

Additional published details for cross-checking include Packaging width 20, Manufactured in Hungary, Product Group 1 ROTATING ELECTRICAL, Part No. 0121813101, Brand BOSCH, Description Bosch Alternator 12V 220A, Power Rating (Amp) 220, Pulley Section 6 Groove, Suits Unit Make Bosch, Alternator Mount Pad.

Bosch Alternator 12V 220A. Part number 0121813101 should be checked first. Listed voltage is 12. Listed output rating is 220. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Pad. 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 0121813101, 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 220 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

The listed warranty is One Year. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm fitment by matching part number 0121813101, 12V system details, 220A output, 6 groove pulley arrangement, internal regulator, pad mount, and direct fastening style before ordering.

FAQ

Is this alternator new or remanufactured?

This Bosch alternator is listed as new.

What is the voltage and output rating?

It is a 12V alternator with a 220A power rating and 220A charge current.

What part number should I match?

The part number is 0121813101.

What pulley setup does it use?

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

Does it have an internal regulator?

Yes, the regulator type is internal.

What should I check before buying?

Match the part number, 12V system, 220A rating, pad mount, direct fastening style, 6 groove pulley, and the note that it excludes a vacuum pump.