OEX Alternator 12V 120A Cummins ZXA101

The OEX Alternator ZXA101 is a 12V, 120A unit with an internal regulator, built as a new alternator for Cummins applications. It uses an 8 groove pulley, with a 61mm pulley outside diameter, and is listed with an OEM number of 5318120.

Mounting details are important on alternators, and this unit is specified with a twin leg alternator mount, 126mm centre-to-centre mounting and 84mm inside mounting legs. The pivot hole is M10x1.5/10.5 and the adjusting hole diameter is 11.5mm, so the physical mount and bracket layout should be checked carefully before ordering.

OEX identifies this alternator as part no. ZXA101 and supplies it as an each unit in the rotating electrical category. The unit weighs 6.64kg and is backed by a one year warranty, which gives a clear reference point for replacement work where the original unit is no longer charging correctly or the existing alternator is due for replacement.

Key Features

• 12V alternator with 120A power rating
• Internal regulator
• 8 groove pulley
• Twin leg alternator mount
• New unit, supplied each
• One year warranty

Specifications

• Voltage: 12V
• Power rating: 120A
• Regulator type: Internal
• Pulley section: 8 groove
• Pulley outside diameter: 61mm
• Alternator mount: Twin leg
• Mount centre-to-centre: 126mm
• Inside mounting legs: 84mm

Known Application Details

• FOTON 45.110
• FOTON 45.110 2014
• FOTON 45.110 2015
• FOTON 45.110 2016
• FOTON AUMARK
• FOTON AUMARK 2012
• FOTON SAUVANA
• FOTON SAUVANA 2017

Application and Buying Notes

This alternator is built around a 12V electrical system and a 120A output, so it should only be compared against the vehicle’s original charging specification and the existing unit’s mounting pattern. The twin leg mount, 126mm mount centre-to-centre measurement, 84mm inside mounting legs and M10x1.5/10.5 pivot hole are the main fitment checkpoints, because alternators can look similar while still differing in bracket spacing or hole size.

The pulley is an 8 groove design with a 61mm outside diameter. That matters because belt alignment and belt type need to match the vehicle setup. If the existing alternator uses a different groove count or pulley diameter, the unit may not suit without further confirmation.

The listed OEM number is 5318120 and the OEX part number is ZXA101. Those are the best identifiers to confirm when cross-checking a replacement, particularly if the old alternator label is faded or the vehicle has had previous electrical repairs. The unit is also listed as a new item with an internal regulator, which should be checked against the original regulator arrangement before purchase.

A correct alternator match depends on more than voltage alone. Confirm the mounting layout, pulley profile, connector arrangement and the vehicle application details before fitting. For vehicles listed against FOTON models, use the exact model and year where available, as the applications shown include 45.110, AUMARK, SAUVANA, TUNLAND, VIEW and VIEW G7 references.

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 ZXA101 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 84mm, Power Rating (Amp) 120, Pulley Section 8 Groove, Suits Unit Make Cummins, Alternator Mount Twin Leg, Mount Cnt to Cnt 126mm, OEM Number 5318120.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. ZXA101, Brand OEX, Description OEX Alternator 12V 120A Cummins, Adjusting Hole Diameter 11.5, Pivot Hole Diameter M10x1.5/10.5, Pulley Outside Diameter 61mm, Regulator Type Internal, Voltage 12.

OEX Alternator 12V 120A Cummins. Part number ZXA101 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 Twin Leg. Regulator type is Internal. 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 ZXA101, 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.

Available application references include FOTON 45.110, FOTON 45.110 2014, FOTON 45.110 2015, FOTON 45.110 2016. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Confirm fitment using the OEX part number ZXA101, OEM number 5318120, 12V 120A rating, twin leg mount dimensions and the vehicle application details before ordering. Do not rely on appearance alone, as alternator mounts, pulley section and regulator type can vary between similar-looking units.

FAQ

What is the voltage and output of this alternator?

It is a 12V alternator with a 120A power rating.

Is this alternator new or remanufactured?

It is listed as new.

What pulley type does it use?

It has an 8 groove pulley with a 61mm pulley outside diameter.

What mounting details should I check before buying?

Check the twin leg mount, 126mm centre-to-centre mounting, 84mm inside mounting legs, M10x1.5/10.5 pivot hole and 11.5mm adjusting hole.

What part numbers are supplied for cross-checking?

The OEX part number is ZXA101 and the OEM number is 5318120.

What vehicle applications are listed?

Listed applications include FOTON 45.110, AUMARK, SAUVANA, TUNLAND, VIEW and VIEW G7 references, including some year-specific listings such as 2012, 2013, 2014, 2015, 2016 and 2017.