Nikko Alternator 24V 50A NXA9720

The Nikko alternator listed here is a 24V, 50A unit with part number NXA9720. It is a new alternator with an internal regulator and a twin leg mount, supplied as each, and it carries a one year warranty.

Key dimensions matter on this unit: the inside mounting legs measure 69mm, the mount centre to centre is 225mm, the pivot hole diameter is 14.5mm, and the adjusting hole diameter is 12.5mm. The pulley outside diameter is 82mm, with an AAA pulley section, so belt and bracket compatibility need to be checked carefully before purchase.

The note supplied with the part says it is brushless and to check the pulley section, with suitability for an 11A type belt. That makes the physical match just as important as the electrical rating, particularly on equipment where alternator position, mount spacing, and belt profile must line up exactly.

Key Features

• 24V alternator with 50A output
• New unit, supplied each
• Internal regulator
• Twin leg alternator mount
• Brushless design
• One year warranty

Specifications

• Brand: Nikko
• Part number: NXA9720
• Voltage: 24V
• Power rating: 50A
• Type: Alternator
• Condition: New
• Regulator type: Internal
• Mount type: Twin leg

Fitment guidance

• No verified vehicle or machine fitment is provided here beyond the supplied suitability notes.
• The part is listed as suitable for Nikko unit applications.
• The note specifies to check pulley section and that it suits an 11A type belt.

Application and Buying Notes

Before ordering, compare the part number NXA9720 with the alternator currently fitted to the machine or vehicle. The electrical rating is 24V at 50A, so it is important to confirm that the charging system is designed for that output and voltage before replacing the unit.

Physical fit is equally important on this alternator. The twin leg mount, 69mm inside mounting legs, 225mm mount centre to centre, 14.5mm pivot hole diameter, and 12.5mm adjusting hole diameter all need to match the existing brackets and hardware closely for a proper installation.

The pulley details should also be checked carefully. This unit has an 82mm pulley outside diameter and an AAA pulley section, and the supplied note says to check pulley section and that it suits an 11A type belt. If the belt profile or pulley section does not match, the alternator may not align or drive correctly.

Because this is a brushless, internally regulated alternator, it is best matched by specification rather than by appearance alone. Weight is listed at 10.9kg, and the unit is supplied new with a one year warranty, so confirming the existing unit’s layout and mount points will save time and reduce the risk of ordering the wrong part.

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 NXA9720 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 69mm, Pivot Hole Diameter 14.5, Pulley Outside Diameter 82mm, Regulator Type Internal, Voltage 24, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. NXA9720, Brand NIKKO, Description Nikko Alternator 24V 50A, Adjusting Hole Diameter 12.5, Pin Code IR18, Power Rating (Amp) 50, Pulley Section AAA, Suits Unit Make Nikko.

Nikko Alternator 24V 50A. Part number NXA9720 should be checked first. Listed voltage is 24. Listed output rating is 50. 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 AAA. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number NXA9720, 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 50 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm compatibility by matching part number NXA9720, the 24V 50A rating, twin leg mount dimensions, and the AAA pulley section before purchase. If the existing alternator or belt setup differs, do not assume interchangeability.

FAQ

What is the part number for this alternator?

The part number is NXA9720. For this listing, part number NXA9720 is the main reference point. Listed voltage is 24. Listed output rating is 50. Published fitment references include ISUZU F, ISUZU F 1985, ISUZU F 1986. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 24V alternator with a 50A power rating. For this listing, part number NXA9720 is the main reference point. Listed voltage is 24. Listed output rating is 50. Published fitment references include ISUZU F, ISUZU F 1985, ISUZU F 1986. 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 NXA9720 is the main reference point. Listed voltage is 24. Listed output rating is 50. Published fitment references include ISUZU F, ISUZU F 1985, ISUZU F 1986. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It has an internal regulator. For this listing, part number NXA9720 is the main reference point. Listed voltage is 24. Listed output rating is 50. Published fitment references include ISUZU F, ISUZU F 1985, ISUZU F 1986. These details should still be checked against the original unit before ordering.

What pulley details are provided?

The pulley outside diameter is 82mm and the pulley section is AAA. The note also says to check pulley section and that it suits an 11A type belt. For this listing, part number NXA9720 is the main reference point. Listed voltage is 24. Listed output rating is 50. Published fitment references include ISUZU F, ISUZU F 1985, ISUZU F 1986. These details should still be checked against the original unit before ordering.

Is there any confirmed fitment list for specific vehicles or machines?

Only limited suitability notes are provided here. It is listed for Nikko unit applications, but no guaranteed vehicle or machine fitment should be assumed without checking the part number and mounting details. For this listing, part number NXA9720 is the main reference point. Listed voltage is 24. Listed output rating is 50. Published fitment references include ISUZU F, ISUZU F 1985, ISUZU F 1986. These details should still be checked against the original unit before ordering.