OEX Alternator 24V 20A Nikko Style NXA606

The OEX Alternator 24V 20A Nikko Style, part number NXA606, is a new rotating electrical unit supplied as each. It is listed as a Nikko-style alternator with a 24 volt system, 25 amp power rating, and internal regulator, making the electrical and mounting details important to confirm before ordering.

This alternator suits a Nikko unit make and uses a twin leg alternator mount. Key mounting measurements include 80mm inside mounting legs, 155mm mount centre to centre, 10mm pivot hole diameter, and an M8x1.25 adjusting hole. The pulley is an A section pulley with a 68mm outside diameter and a 15mm shaft dimension.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories that are ISO9001 certified for engineering, testing, and quality control procedures. The listed warranty is 3 years for passenger use and 1 year for commercial use, so it is worth matching the application carefully before purchase.

At 3.6kg, this alternator is a compact 24V replacement option for applications needing the NXA606 configuration. The fitment information supplied lists a range of equipment and engine applications, but the final check should still be made against the part number, mount style, pulley details, and vehicle or machine application.

Key Features

• 24V alternator, Nikko style
• Part number NXA606
• New unit, supplied each
• Internal regulator
• Twin leg alternator mount
• A section pulley, 68mm outside diameter

Specifications

• Brand: OEX
• Product type: Alternator
• Voltage: 24V
• Power rating: 25 amp
• Unit of measure: Each
• Suits unit make: Nikko
• Alternator mount: Twin leg
• Regulator type: Internal

Known application references

• CASE CX75
• CASE CX80
• HITACHI EX100-2
• HITACHI EX100-3
• HITACHI EX100WD
• HITACHI EX150
• HITACHI ZX70
• HITACHI ZX75US

Application and Buying Notes

Before buying, confirm that your original alternator is a Nikko-style unit with the same 24V system and internal regulator arrangement. The key matching points here are the NXA606 part number, twin leg mount, 155mm mount centre to centre, 80mm inside mounting legs, and 68mm A section pulley, as small differences in those dimensions can stop a clean swap.

The listed power rating is 25 amp, so this is not a part to guess on if the machine specification is unclear. Check the application tag on the machine, the existing alternator label, and the mounting layout on the engine or bracket. The 10mm pivot hole and M8x1.25 adjusting hole are especially useful checks when comparing against the removed unit.

The fitment references include a broad range of equipment families such as CASE, HITACHI, IHI, ISUZU, JCB, JOHN DEERE, KATO, KOBELCO, KOMATSU, LINK-BELT, SUMITOMO, and TAKEUCHI. That said, the safest approach is still to verify the exact machine, engine, and alternator configuration rather than relying on the brand name alone.

If you are replacing a failed alternator, compare the old unit before it is discarded. Check pulley section, shaft dimension, mounting ear spacing, and regulator type together. This helps avoid ordering a similar-looking alternator that does not line up once fitted or that uses a different electrical connection or charging output.

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 NXA606 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 3yr Passenger 1yr Commercial, Inside Mounting Legs 80mm, Pivot Hole Diameter 10, Pulley Outside Diameter 68mm, Regulator Type Internal, Voltage 24, Mount Cnt to Cnt 155mm, Shaft Dimension 15.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. NXA606, Brand OEX, Description OEX Alternator 24V 20A Nikko Style, Adjusting Hole Diameter M8x1.25, Pin Code IR15, Power Rating (Amp) 25, Pulley Section A, Suits Unit Make Nikko.

OEX Alternator 24V 20A Nikko Style. Part number NXA606 should be checked first. Listed voltage is 24. Listed output rating is 25. 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 NXA606, 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 24 and output 25 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include CASE CX75, CASE CX75 2007, CASE CX80, CASE CX80 2007, HITACHI EX100-2, HITACHI EX100-3. 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 part number NXA606, the 24V 25 amp specification, the Nikko-style application, and the mounting and pulley dimensions before ordering. Vehicle and machine references are provided as application guidance only, and the final match should always be checked against the existing unit and installation details.

FAQ

What is the part number for this alternator?

The part number listed is NXA606.

Is this a new or remanufactured unit?

This alternator is listed as new.

What voltage does it use?

It is a 24V alternator.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What are the main mounting measurements?

The listed mounting details are 80mm inside mounting legs, 155mm mount centre to centre, 10mm pivot hole diameter, and an M8x1.25 adjusting hole.

What warranty is listed?

The listed warranty is 3 years for passenger use and 1 year for commercial use.