OEX Alternator 24V 50A Hitachi Style HXA105

The OEX HXA105 is a new 24V 50A alternator built in Hitachi style and suited to Hitachi applications. It is a twin leg mount unit with an internal regulator, a 7 groove / A pulley, and a 65mm pulley outside diameter.

This alternator uses an inside mounting leg spacing of 76mm, a mount centre-to-centre dimension of 170mm, and an M10x1.25 / 10 pivot hole diameter. The adjusting hole diameter is 9mm, so checking the mounting points on the vehicle or removed unit is an important part of confirming the fit.

OEX states this product is sourced from market leading original equipment manufacturers and aftermarket suppliers, with production from ISO certified factories. It is backed by a 3yr Passenger 1yr Commercial warranty, which gives a clear warranty reference when comparing replacement options.

Key Features

• 24V alternator with 50A output
• New unit, not remanufactured
• Hitachi style with internal regulator
• Twin leg alternator mount
• 7 groove / A pulley
• Part No. HXA105

Specifications

• Voltage: 24V
• Power rating: 50 amps
• Pulley outside diameter: 65mm
• Pulley section: 7 groove / A
• Inside mounting legs: 76mm
• Mount centre to centre: 170mm
• Pivot hole diameter: M10x1.25 / 10
• Adjusting hole diameter: 9mm

Fitment guidance

• Fitment information supplied points to Isuzu applications, including Isuzu Elf, Isuzu F, Isuzu Forward F, and Isuzu N ranges.
• Listed fitment preview includes Isuzu Elf model years from 1999 through 2009.
• Confirm the removed alternator matches the mounting layout, pulley type, voltage, and part number before ordering.

Application and Buying Notes

This alternator is specified as a 24V, 50A Hitachi style unit with part number HXA105, so the most reliable way to confirm it is to compare the removed unit against those identifiers first. The twin leg mount, 76mm inside mounting leg spacing, and 170mm centre-to-centre mount measurement are the key physical checks before purchase.

The pulley details matter as much as the electrical rating. This unit has a 65mm outside diameter pulley with a 7 groove / A section, so the belt profile and groove count need to match the application. If the belt or pulley arrangement differs from the removed alternator, the unit may not line up correctly even if the casing looks similar.

The internal regulator is another point to verify, particularly on vehicles that may have been altered or previously repaired. Matching the regulator style, pivot hole size, and adjusting hole diameter helps reduce the risk of ordering an alternator that is close in appearance but wrong in mounting detail.

OEX lists this as a new alternator and notes that a high output version, HXA064, can be used in some applications. That does not make the two units interchangeable in every case, so compare the part number, mount type, voltage, and output rating carefully before making a decision.

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 HXA105 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 76mm, Pivot Hole Diameter M10x1.25 / 10, Pulley Outside Diameter 65mm, 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. HXA105, Brand OEX, Description OEX Alternator 24V 50A Hitachi Style, Adjusting Hole Diameter 9, Pin Code IR97, Power Rating (Amp) 50, Pulley Section 7 Groove / A, Suits Unit Make Hitachi.

OEX Alternator 24V 50A Hitachi Style. Part number HXA105 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 7 Groove / A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number HXA105, 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.

Available application references include ISUZU ELF, ISUZU ELF 1999, ISUZU ELF 2000, ISUZU ELF 2001. 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.

The listed warranty is 3yr Passenger 1yr Commercial. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Confirm compatibility using the part number HXA105, the 24V 50A rating, the Hitachi style application, and the stated mounting and pulley dimensions before ordering.

FAQ

What is the part number for this alternator?

The part number is HXA105.

Is this alternator new or remanufactured?

It is a new alternator.

What voltage and output does it have?

It is rated at 24V and 50A.

What type of regulator does it use?

It uses an internal regulator.

What mounting details are listed for this unit?

It is a twin leg mount alternator with 76mm inside mounting legs, 170mm mount centre to centre, an M10x1.25 / 10 pivot hole diameter, and a 9mm adjusting hole diameter.

What vehicle applications are listed in the fitment information?

The supplied fitment preview points to Isuzu applications, including Isuzu Elf, Isuzu F, Isuzu Forward F, and Isuzu N ranges, with Isuzu Elf years shown from 1999 to 2009 in the preview.