Mahle Alternator 12V 150A MG30

The Mahle MG30 alternator is a new 12V unit rated at 150A, supplied as a single-leg mount alternator with an internal regulator. It is specified with a V-ribbed belt pulley and 10-groove pulley section, so the pulley style and belt arrangement need to match the vehicle application exactly.

Key physical details include a 61mm pulley outside diameter, 56mm mount leg thickness, 10mm pivot hole diameter, and 10mm adjusting hole diameter. The alternator also has a 156mm mount centre-to-centre measurement, two mounting bores, and a mounting points diameter of 90.0.

This unit is listed for Mahle applications and carries part number MG30. It is noted as having a coil on the D+ terminal, with rotation specified as clockwise and insulated return marked as no. Those details matter when you are checking a replacement against the original unit before ordering.

Key Features

• 12V alternator with 150A charge current
• New unit, supplied each
• Internal regulator
• V-ribbed belt pulley with 10 groove section
• Single-leg alternator mount
• Coil on D+ terminal

Specifications

• Brand: Mahle
• Product type: Alternator
• Voltage: 12V
• Power rating: 150A
• Alternator charge current: 150A
• Part No.: MG30
• Pin code: IR189
• Pulley outside diameter: 61mm

Fitment information supplied

• Listed fitment families include Case IH Puma.
• Listed fitment families include Challenger MT.
• Listed fitment families include New Holland T7, T7000, T8 and T9.
• Sample application years shown include Case IH Puma 2007 and 2009.
• Sample application years shown include Challenger MT 2007, 2008, 2009, 2010 and 2011.
• Sample application years shown include New Holland T7 2010, T7000 2007 to 2012, T8 2010 and T9.

Application and Buying Notes

Before ordering, compare the MG30 part number, the 12V system requirement, and the 150A output against the alternator you are replacing. The pulley arrangement is also important here: this unit uses a V-ribbed belt pulley with a 10-groove section and a 61mm outside diameter, so the belt profile and alignment need to match the machine already in service.

Check the mounting layout carefully. This alternator is a single-leg mount design with two mounting bores, a 156mm mount centre-to-centre measurement, 56mm mount leg thickness, and 10mm pivot and adjusting holes. If the original unit differs in these dimensions, it may not install correctly even if the electrical rating appears similar.

The note for coil on D+ terminal is another detail to verify against the original unit or wiring arrangement. The alternator is also listed with internal regulation and clockwise rotation, so both the charging control style and rotation direction should be matched before purchase.

Where fitment is concerned, the supplied applications point to Case IH Puma, Challenger MT, and New Holland T7, T7000, T8 and T9 families, with several model-year references shown. That is helpful as a guide, but the safest check is still the part number and the physical mounting and pulley details on the unit already fitted to the vehicle or machine.

This alternator weighs 7.9kg and is supplied new, which can be useful when comparing against a removed unit during parts identification. If you are replacing a charging system component rather than a known direct match, it is worth confirming the D+ terminal arrangement, pulley groove count, and mount centres before finalising the order.

The one-year warranty applies to the supplied unit, but warranty coverage does not remove the need to confirm correct fitment. If there is any doubt about the application, the original alternator number, pulley type, and mounting measurements should be checked against this listing before installation work begins.

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 MG30 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, Mount Leg Thickness 56mm, Pivot Hole Diameter 10, Pulley Outside Diameter 61mm, Regulator Type Internal, Suits Unit Make Mahle, Note With coil on D+ terminal, Mount Cnt to Cnt 156mm.

Additional published details for cross-checking include Insulated Return No, Pulleys with V-ribbed belt pulley, Number of mounting bores 2, Mounting points diameter 90.0, Packaging length 24.8, Packaging height 17.50, Weight 7.9kg, Product Group 1 ROTATING ELECTRICAL, Part No. MG30, Brand MAHLE.

Mahle Alternator 12V 150A. Part number MG30 should be checked first. Listed voltage is 12. Listed output rating is 150. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single Leg. Regulator type is Internal. Pulley configuration is 10 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MG30, 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.

Compatibility note: Please confirm fitment using part number MG30, the 12V 150A specification, and the listed mounting and pulley dimensions before ordering. If the original alternator differs in mount style, pulley groove count, rotation, or D+ terminal arrangement, do not assume it will interchange without checking the application details.

FAQ

What is the part number for this alternator?

The listed part number is MG30.

Is this a 12V or 24V alternator?

This alternator is specified as 12V.

What is the output rating?

The power rating and alternator charge current are both listed as 150A.

What type of regulator does it use?

It uses an internal regulator.

What pulley type is fitted?

It is fitted with a V-ribbed belt pulley and a 10 groove pulley section, with a 61mm pulley outside diameter.

What should I check before buying to confirm fitment?

Check the MG30 part number, 12V system requirement, 150A output, single-leg mount layout, 156mm mount centre-to-centre measurement, and the D+ terminal note against the original unit.