Mahle Alternator 24V 120A MG1100

The MAHLE MG1100 alternator is a new 24V, 120A rotating electrical unit supplied with a V-ribbed belt pulley and 8-groove pulley section. It is listed as a twin leg alternator mount with 107mm inside mounting legs, a 13mm pivot hole diameter, and a 72mm pulley outside diameter.

This unit is a Mahle alternator, part number MG1100, and it is described as a multi-function alternator. The charge current is 120A, the rotation is clockwise, and the distance from the pulley to the alternator is 44.0mm. Those dimensions matter when you are matching the unit to the existing mounting and belt alignment on the vehicle.

It is a new unit, not remanufactured, and it comes with a one year warranty. The alternator is also stated to comply with international standards for electromagnetic compatibility and to be manufactured using the latest technologies and materials.

Fitment data supplied with this product links it to Volvo applications including FH II, FM II and FMX II variants. As with any charging system component, the correct part number, mounting style, pulley arrangement and electrical specification should be checked together before ordering.

Key Features

• New 24V alternator
• 120A charge current
• V-ribbed belt pulley
• 8-groove pulley section
• Clockwise rotation
• Twin leg mount

Specifications

• Brand: MAHLE
• Part number: MG1100
• Product type: Alternator
• Voltage: 24V
• Power rating: 120A
• Alternator charge current: 120A
• Condition: New
• Rotation: CW

Fitment guidance

• Volvo FH II
• Volvo FM II
• Volvo FMX II
• Supplied fitment references also include 2012 and 2013 applications for some Volvo model lines

Application and Buying Notes

Before buying, match the part number MG1100 and compare the vehicle’s charging system requirements with the 24V, 120A rating. Voltage and output need to suit the vehicle system, and this alternator is not a generic 12V unit.

Check the mounting arrangement carefully. This unit is listed with a twin leg alternator mount, 107mm inside mounting legs, 107.0 mounting bores distance, a 13mm pivot hole diameter, and 99.0 mounting points diameter. Those details need to align with the existing bracket and hardware.

Belt drive compatibility also needs to be checked. The alternator uses a V-ribbed belt pulley with an 8-groove pulley section and a 72mm pulley outside diameter, with 44.0mm from the pulley to the alternator. Those dimensions help confirm belt line and pulley match-up before installation.

The supplied fitment points to Volvo FH II, FM II and FMX II applications, including some 2012 and 2013 references, but fitment should still be verified against the vehicle’s exact specification. In commercial vehicle charging systems, small differences in mounting or pulley details can make a unit unsuitable even where the model family appears similar.

This is a new MAHLE alternator with a one year warranty, so it is suitable where a fresh replacement unit is required rather than a remanufactured component. The product is also described as ISO 9001 certified and compliant with international standards for electromagnetic compatibility, which are useful indicators when selecting a replacement electrical part.

If you are replacing a failed alternator, compare the old unit’s label, mounting style, pulley groove count and electrical output before ordering. That approach is the safest way to confirm the correct replacement and avoid downtime from an incorrect match.

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 MG1100 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, Pivot Hole Diameter 13, Pulley Outside Diameter 72mm, Rotation CW, Voltage 24, New / Reman. New, Pulleys with V-ribbed belt pulley, Mounting Bores Distance 107.0.

Additional published details for cross-checking include Distance from pulley to the alternator 44.0, Packaging width 23.00, Net Weight 8507, Product Group 1 ROTATING ELECTRICAL, Part No. MG1100, Brand MAHLE, Description Mahle Alternator 24V 120A, Inside Mounting Legs 107mm, Power Rating (Amp) 120, Pulley Section 8 Groove.

Mahle Alternator 24V 120A. Part number MG1100 should be checked first. Listed voltage is 24. 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. Pulley configuration is 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MG1100, 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 24 and output 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by matching part number MG1100, the 24V 120A specification, the twin leg mount, and the 8-groove V-ribbed pulley details against the vehicle’s existing alternator and application records before purchase.

FAQ

What is the part number for this alternator?

The part number is MG1100.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What voltage and output does it have?

It is a 24V alternator with a 120A charge current and 120A power rating.

What type of pulley does it use?

It uses a V-ribbed belt pulley with an 8-groove pulley section and a 72mm outside diameter.

What vehicles is it linked to?

The supplied fitment references point to Volvo FH II, FM II and FMX II applications, including some 2012 and 2013 listings.

What should I check before ordering?

Check the part number MG1100, the 24V electrical system, the 120A output, the twin leg mount, and the pulley groove and diameter details against the existing unit.