Mahle Alternator 12V 55A MG426

The Mahle Alternator MG426 is a new 12V unit with a 55A power rating and internal regulator. It is listed with a twin leg alternator mount, 86mm inside mounting legs, a 144mm mount centre-to-centre measurement, and a 72mm pulley outside diameter.

This alternator is supplied with a belt pulley, uses one belt, and is set up for clockwise rotation. The connector/clamp is W, the pin code is IR25, and the adjusting hole diameter is M8x1.25. Those details matter when checking replacement compatibility on the vehicle before ordering.

Mahle identifies this unit as part number MG426, and the unit of measure is each. It is a new alternator, not remanufactured, and is covered by a one year warranty. The stated alternator charge current is 55A.

The listed product information also notes that the alternators fulfil international standards and requirements for electromagnetic compatibility, and are manufactured using environmentally friendly technologies and materials.

Key Features

• 12V alternator with 55A output
• Internal regulator
• New unit, not remanufactured
• Twin leg alternator mount
• Supplied with belt pulley
• Clockwise rotation

Specifications

• Brand: Mahle
• Part number: MG426
• Type: Alternator
• Voltage: 12V
• Power rating: 55A
• Alternator charge current: 55A
• Rotation: CW
• Pulley outside diameter: 72mm

Fitment guidance

• Fitment is not positively verified here by vehicle model.
• Confirmed application groups in the supplied data include BMW 3, Ford 3000-Series, Ford 555 C, International Harvester 484, Jaguar XJ, JCB 112, JCB 525-67, JCB 817/820, JCB 881, John Deere 1750, Land Rover Defender, Land Rover 88/109, Landini 5, Landini 50, Landini 55, Landini 60, Landini 65, Landini 75, Massey Ferguson 375, Massey Ferguson 384, Massey Ferguson 398, Massey Ferguson 399, New Holland LX885, and Vermeer BC1220 - BC1230.
• The fitment data also references models such as Ford Cargo, Land Rover Discovery, Landini Blizzard, Landini Multifarm, Landini Powerfarm, Landini Rex, Landini Series 4, Landini Vision, Massey Ferguson 6265, MG MGB GT, Millers Welder, and Vermeer SC1102 and ST750HP.
• Because alternators are sensitive to mounting style, pulley size, rotation, connector type, and regulator type, the part number MG426 and the measurements above should be checked against the existing unit.

Application and Buying Notes

Before ordering, compare the existing alternator against the MG426 details: 12V, 55A output, internal regulator, twin leg mount, CW rotation, and a 72mm pulley outside diameter. A unit can look similar but still differ in mounting legs, connector type, or pulley arrangement.

The listed 86mm inside mounting legs and 144mm mount centre-to-centre measurement are important checks when matching bracket spacing. The pivot hole diameter of 8, the M8x1.25 adjusting hole, and the 83.0 mounting points diameter give further confirmation points if you are comparing the old unit on the bench.

This alternator is supplied with a belt pulley and is set up for one belt with A section pulley profile. That matters if the existing drive system uses a different belt width or pulley configuration, as the wrong pulley style can stop a proper installation even when the electrical rating matches.

The connector/clamp is W and the pin code is IR25, so the plug arrangement should be matched carefully. On electrical parts like alternators, the safest comparison is always the part number first, then the physical mounting and connector details, then the voltage and output rating.

If the vehicle has been modified, the best practice is to compare the removed unit, note the regulator type, pulley size, and mounting style, and confirm the application against the vehicle identification details. The one year warranty applies to the part as supplied, but it does not replace the need to verify fitment before fitting.

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 MG426 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 86mm, Pivot Hole Diameter 8, Pulley Outside Diameter 72mm, Regulator Type Internal, Suits Unit Make Mahle, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Pulleys with belt pulley, Mounting Bores Distance 86.0, Number of belts 1, Packaging length 24.8, Packaging height 17.50, Product Group 2 ALTERNATORS, Part No. MG426, Brand MAHLE, Description Mahle Alternator 12V 55A.

Mahle Alternator 12V 55A. Part number MG426 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 MG426, 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 compatibility using part number MG426 and the listed mounting, pulley, regulator, rotation, and connector details before purchase.

FAQ

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What is the voltage and output rating?

It is a 12V alternator with a 55A power rating and 55A alternator charge current.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What mounting style does it use?

It uses a twin leg alternator mount, with 86mm inside mounting legs and a 144mm mount centre-to-centre measurement.

What pulley details are listed?

It is supplied with a belt pulley, has a 72mm pulley outside diameter, uses pulley section A, and is set up for one belt.

How should I check fitment before buying?

Compare the part number MG426, then check the vehicle application, voltage, 55A output, rotation, connector type W, pin code IR25, and the mounting measurements against the existing unit.