Mahle Alternator 12V 55A MG43 OEM 11201071

The Mahle Alternator 12V 55A is a new rotating electrical unit supplied as each, with part number MG43 and OEM number 11201071. It is a 12-volt alternator rated at 55 amps, with internal regulation and a clockwise rotation.

This unit is listed with a twin leg alternator mount, 73mm inside mounting legs, 12mm pivot hole diameter, and 85.0 mounting points diameter. It also uses a 72mm outside diameter pulley with an A-section belt pulley and one belt.

If you are matching an existing alternator, the critical identifiers here are 12V, 55A, MG43, and 11201071. The physical details such as the 44.5 distance from the pulley to the alternator, 62.6 mounting bores distance, and 11mm adjusting hole diameter are important when checking interchange and installation space.

Key Features

• 12V alternator with 55A charge current
• New unit, supplied each
• Internal regulator type
• Clockwise rotation
• Twin leg alternator mount
• Supplied with belt pulley

Specifications

• Brand: Mahle
• Product type: Alternator
• Part No.: MG43
• OEM Number: 11201071
• Voltage: 12V
• Power rating: 55 amp
• Alternator charge current: 55A
• Regulator type: Internal

Fitment information provided

• FIAT
• FIAT 1000
• FIAT 1130
• FIAT 3350
• FIAT 3450
• FIAT 700
• FIAT 800
• FIAT 90

Application and Buying Notes

Before ordering, compare the alternator mounting style and measurements against the unit already fitted to the vehicle. The key checks here are the twin leg mount, 73mm inside mounting legs, 12mm pivot hole, 11mm adjusting hole, and 62.6 mounting bores distance. These dimensions affect whether the alternator will physically sit and align correctly.

The electrical side is equally important. This alternator is 12V and 55A, with an internal regulator and clockwise rotation. Those details need to match the vehicle’s charging system requirements, because voltage, current output, regulation style, and rotation are all part of the interchange decision.

The pulley details should also be confirmed. This unit has a 72mm pulley outside diameter, A-section pulley, and is supplied with one belt. If the existing drive setup uses a different belt profile or pulley arrangement, the part may not be a direct replacement without further checking.

If you are replacing a failed alternator, it is sensible to compare the old unit’s part number, OEM number, and physical features before fitting. The listed identifiers MG43 and 11201071 are the strongest reference points for matching, especially where multiple alternators may be used across similar applications.

The product is listed as new and carries a one year warranty. That gives a clear buying reference, but it does not remove the need to confirm fitment against the vehicle application and the installed alternator. A careful check up front helps avoid delays, incorrect ordering, and unnecessary return freight.

When dealing with charging parts, exact matching matters more than general shape. Even where the vehicle family is listed, the correct result still depends on the alternator mount, pulley configuration, and the vehicle’s original electrical setup. If any of those details differ, verify before purchase.

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 MG43 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 73mm, Pivot Hole Diameter 12, Pulley Outside Diameter 72mm, Regulator Type Internal, Suits Unit Make Mahle, Alternator Mount Twin Leg, OEM Number 11201071.

Additional published details for cross-checking include Pulleys with belt pulley, Mounting points diameter 85.0, Distance from pulley to the alternator 44.5, Packaging width 18.60, Net Weight 4698, Product Group 1 ROTATING ELECTRICAL, Part No. MG43, Brand MAHLE, Description Mahle Alternator 12V 55A, Adjusting Hole Diameter 11.

Mahle Alternator 12V 55A. Part number MG43 should be checked first. Listed voltage is 12. Listed output rating is 55. 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MG43, 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 55 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by matching part number MG43 and OEM number 11201071, then check the 12V 55A rating, twin leg mount, pulley dimensions, rotation, and vehicle application details before ordering.

FAQ

What is the voltage and output of this alternator?

This alternator is 12V and rated at 55 amps. The specification also lists Alternator Charge Current [A] as 55.

Is the regulator internal or external?

The regulator type is internal.

What is the rotation direction?

The rotation is clockwise, shown as CW in the specifications.

What pulley setup does it use?

It is supplied with a belt pulley, has a 72mm pulley outside diameter, uses an A-section pulley, and is listed with one belt.

What part numbers should I use to match it?

The listed part number is MG43 and the OEM number is 11201071. Those are the main identifiers to compare against the existing unit.

Which fitment groups are listed for this alternator?

The fitment data lists FIAT, FIAT 1000, FIAT 1130, FIAT 3350, FIAT 3450, FIAT 700, FIAT 800, FIAT 90, and FIAT 900, with FIAT 1000 applications shown from 1972 through 1982.