Mahle Alternator 12V 120A MG170

The MAHLE alternator MG170 is a 12V unit rated at 120A, supplied as a new alternator for rotating electrical applications. It uses an internal regulator and is listed with a 6 groove V-ribbed belt pulley, which makes the drive setup a key point to confirm before ordering.

Physical details matter on alternators, and this unit is specified with a multi leg alternator mount, 2 mounting bores, 56mm mount leg thickness, and 90.0 mounting points diameter. The distance from the pulley to the alternator is listed at 32.4, and the pulley outside diameter is 50mm.

This alternator is described as dust proof with insulated ground. It is also noted as meeting international standards and requirements for electromagnetic compatibility, and being manufactured using environmentally friendly technologies and materials. The part number is MG170, which is the most useful identifier to match against the vehicle application or removed unit.

Key Features

• 12V alternator rated at 120A
• Internal regulator
• 6 groove V-ribbed belt pulley
• Multi leg alternator mount
• Dust proof with insulated ground
• New part

Specifications

• Brand: MAHLE
• Product type: Alternator
• Part number: MG170
• Voltage: 12V
• Charge current / power rating: 120A
• Regulator type: Internal
• Mounting style: Multi leg
• Number of mounting bores: 2

Application and Buying Notes

Before ordering, compare the removed alternator against MG170 and check the 12V system rating, 120A output, internal regulator, and the 6 groove V-ribbed belt pulley. Those details are the quickest way to rule out obvious mismatches when replacing a charging unit.

Mounting layout is just as important as electrical rating. This alternator is listed with a multi leg mount, 2 mounting bores, 56mm mount leg thickness, 56.0 mounting bores distance, 90.0 mounting points diameter, and a 10mm adjusting hole diameter. If any of those do not line up with the vehicle bracket or the old unit, it should not be treated as a direct match.

Pulley alignment must also be checked carefully. The pulley outside diameter is 50mm, the pulley section is 6 groove, and the distance from the pulley to the alternator is 32.4. Those measurements affect belt alignment and bracket clearance, so they need to be confirmed against the existing setup rather than assumed.

The note of dust proof and insulated ground may be relevant in harsher operating conditions, but it should still be treated as a specification, not a promise of compatibility. If the vehicle used a different regulator style, pulley arrangement, or case shape, that difference can matter even when the amperage rating is similar.

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 MG170 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, Pulley Outside Diameter 50mm, Regulator Type Internal, Voltage 12, Alternator Mount Multi Leg, Alternator Charge Current [A] 120, Number of mounting bores 2.

Additional published details for cross-checking include Mounting points diameter 90.0, Packaging length 24.8, Packaging height 17.50, Product Group 2 ALTERNATORS, Part No. MG170, Brand MAHLE, Description Mahle Alternator 12V 120A, Adjusting Hole Diameter 10, Power Rating (Amp) 120.

Mahle Alternator 12V 120A. Part number MG170 should be checked first. Listed voltage is 12. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Multi Leg. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MG170, 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 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment by matching part number MG170, the 12V 120A specification, internal regulator, multi leg mount, and 6 groove pulley details against the vehicle and the removed unit before purchase.

FAQ

What is the part number for this alternator?

The part number is MG170. For this listing, part number MG170 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number MG170 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

What is the voltage and output rating?

It is a 12V alternator rated at 120A. For this listing, part number MG170 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

Does it use an internal regulator?

Yes. The regulator type is listed as internal. For this listing, part number MG170 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

What pulley type does it have?

It has a 6 groove V-ribbed belt pulley with a 50mm outside diameter. For this listing, part number MG170 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

How should I confirm fitment before buying?

Match MG170, the 12V 120A rating, the internal regulator, and the mounting and pulley measurements against the existing unit and vehicle application. For this listing, part number MG170 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.