Mahle Alternator 12V 80A MG18

The Mahle MG18 alternator is a new 12V unit rated at 80A, supplied with a belt pulley and arranged for clockwise rotation. It is listed as a single-leg alternator with a one-year warranty, which makes the key identifiers easy to check before ordering: Part No. MG18, voltage 12V, charge current 80A, and pulley section A.

Important physical points include a 68mm pulley outside diameter, 115mm mounting points diameter, 32mm mount leg thickness, 10mm pivot hole diameter, and 11mm adjusting hole diameter. The unit has one belt groove and internal regulation, so it is intended for applications that match those core dimensions and electrical characteristics.

A note is supplied for a 120A version, MG441, and it also says to check the original pulley. That is worth treating as a proper compatibility checkpoint, because pulley details and belt alignment are just as important as voltage and amperage when matching an alternator.

This is a Mahle alternator sold as each, and the supplied fitment data includes machinery and engine applications such as Ammann RW1805, Belarus 320R, Haulotte HA120PX, Lombardini LDW1204, LDW1204T, LDW1503, LDW2004, and Wacker Neuson RD16-90. Those applications should still be verified against the part number and dimensions before purchase.

Key Features

• New Mahle alternator
• 12V, 80A output
• Internal regulator
• Supplied with belt pulley
• Clockwise rotation
• Single-leg alternator mount

Specifications

• Brand: Mahle
• Part No.: MG18
• Voltage: 12V
• Alternator charge current: 80A
• Power rating: 80A
• Rotation: CW
• Regulator type: Internal
• New / remanufactured: New

Fitment references supplied

• Ammann RW1805
• Ammann RW1805 2011
• Ammann RW1805 2012
• Belarus 320R
• Belarus 320R 1991
• Belarus Series 100
• Belarus Series 100 2008
• Belarus Series 100 2013

Application and Buying Notes

Before ordering, compare the Part No. MG18, the 12V system voltage, and the 80A output with the alternator already fitted to the machine or engine. The unit is marked as new, uses an internal regulator, and is built as a single-leg alternator, so the mounting style needs to match as well as the electrical output.

The pulley detail deserves careful checking. This alternator is supplied with a pulley, has a 68mm outside diameter, uses an A section pulley, and runs clockwise. The product note specifically says to check the original pulley, which is a sensible step if belt alignment, pulley width, or shaft setup differs from the existing unit.

The listed mounting measurements are also important: 115mm mounting points diameter, 32mm mount leg thickness, 10mm pivot hole diameter, and 11mm adjusting hole diameter. If any of those dimensions differ from the old unit, the alternator may not align correctly even if the application name looks similar.

The fitment references include Ammann RW1805, Belarus 320R, Haulotte HA120PX, several Lombardini LDW variants, and Wacker Neuson RD16-90 applications. Use those references as a guide only and confirm them against the exact machine details, original part number, and pulley arrangement before fitting.

The supplied note also mentions a 120A version, MG441. That indicates there are related alternators in the range, so matching the exact part number MG18 is the safest approach when the vehicle or machine uses the 80A specification.

Packaging dimensions are listed as 24.8 length and 17.50 height, which may be useful for workshop receiving or storage, but they do not replace fitment checks. The practical confirmation points remain voltage, amperage, rotation, regulator type, mounting dimensions, and pulley specification.

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 MG18 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 32mm, Pivot Hole Diameter 10, Pulley Outside Diameter 68mm, Regulator Type Internal, Suits Unit Make Mahle, Note 120A version MG441. Check original pulley, Mount Cnt to Cnt 115mm.

Additional published details for cross-checking include Alternator Charge Current [A] 80, Mounting Bores Distance 32, Number of belts 1, Packaging length 24.8, Packaging height 17.50, Product Group 2 ALTERNATORS, Part No. MG18, Brand MAHLE, Description Mahle Alternator 12V 80A.

Mahle Alternator 12V 80A. Part number MG18 should be checked first. Listed voltage is 12. Listed output rating is 80. 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MG18, 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: Confirm fitment using Part No. MG18, 12V/80A rating, clockwise rotation, internal regulator, single-leg mounting, and the pulley and mounting dimensions before ordering. If the original alternator or pulley differs, compare those details closely with the supplied specifications.

FAQ

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What voltage and output does this unit have?

The alternator is 12V and rated at 80A.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What pulley information is supplied?

It is supplied with a belt pulley, has a 68mm pulley outside diameter, uses an A section pulley, and is listed with one belt groove.

What mounting details should be checked before buying?

Check the single-leg mount, 32mm mount leg thickness, 10mm pivot hole diameter, 11mm adjusting hole diameter, and 115mm mounting points diameter.

Which applications are referenced for this alternator?

The supplied fitment references include Ammann RW1805, Belarus 320R and Series 100, Haulotte HA120PX, Lombardini LDW1204, LDW1204T, LDW1503, LDW2004, and Wacker Neuson RD16-90.