OEX Alternator 24V 20A Prestolite Style LXA9500

The OEX Alternator 24V 20A Prestolite Style is a new rotating electrical unit for 24 volt applications, supplied under part number LXA9500. It is listed as a Prestolite suit and uses an internal regulator, with B+ and IGN connections only for installation in sealed, extreme-condition use.

This alternator is rated at 20 amps and uses a twin leg alternator mount with 198mm mount centre to centre and 101mm inside mounting legs. The shaft diameter is 22mm, the shaft dimension is 22, and the pivot hole diameter is 13mm, so these measurements are important when matching the unit to the existing bracket and drive arrangement.

As an OEX product, it is sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories that are ISO9001 certified. It is covered by a 3 year passenger / 1 year commercial warranty, which gives a useful level of support for buyers who need a replacement alternator with known part details and a defined application style.

Key Features

• 24V alternator, 20 amp output
• Prestolite style unit
• Internal regulator
• New unit
• Twin leg alternator mount
• Sealed for extreme conditions

Specifications

• Brand: OEX
• Part No.: LXA9500
• Product type: Alternator
• Voltage: 24V
• Power rating: 20A
• Unit of measure: Each
• New / Reman.: New
• Regulator type: Internal

Verified fitment references

• CASE 850
• CASE 855
• KOBELCO K905
• KOMATSU COMPRESSOR
• KOMATSU D50
• KOMATSU D50A
• KOMATSU D50A-16
• KOMATSU D53

Application and Buying Notes

Before ordering, check the existing alternator against part number LXA9500 and confirm it is a Prestolite style application with a 24V system and 20A output. The mounting points also matter: this unit has a twin leg mount, 198mm mount centre to centre, 101mm inside mounting legs, and a 13mm pivot hole diameter.

The shaft diameter is 22mm and the shaft dimension is also listed as 22, so the pulley and bracket alignment need to suit that size. The pulley section is marked not applicable, which means you should compare the physical unit carefully rather than relying on pulley assumptions.

This alternator is sealed for extreme conditions and uses B+ and IGN connections only. That makes the connection style a practical compatibility checkpoint, particularly where the original unit has different wiring, terminal layout, or an unsealed housing.

If you are matching a replacement for CASE, KOBELCO, or KOMATSU equipment, use the model references carefully and compare the installed unit on the machine. Model families can share similar-looking alternators, so the safest check remains the part number, voltage, mounting style, and the measured bracket and shaft dimensions.

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 LXA9500 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 101mm, Power Rating (Amp) 20, Regulator Type Internal, Suits Unit Make Prestolite, Note Sealed for extreme conditions B+ & IGN connections only, Mount Cnt to Cnt 198mm, Shaft Dimension 22.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. LXA9500, Brand OEX, Description OEX Alternator 24V 20A Prestolite Style, Adjusting Hole Diameter 1/2 UNC, Pivot Hole Diameter 13, Pulley Section Not Applicable, Shaft Diameter 22mm, Voltage 24.

OEX Alternator 24V 20A Prestolite Style. Part number LXA9500 should be checked first. Listed voltage is 24. Listed output rating is 20. 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 Not Applicable. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number LXA9500, 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 20 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by checking part number LXA9500, 24V system voltage, 20A output, Prestolite style application, twin leg mounting, and the listed measurements before purchase. Do not rely on model names alone; compare the removed alternator and the machine's mounting and connection details to make sure the replacement is correct.

FAQ

What is the part number for this alternator?

The part number listed is LXA9500. For this listing, part number LXA9500 is the main reference point. Listed voltage is 24. Listed output rating is 20. Published fitment references include CASE 850, CASE 855, CATERPILLAR 120G. 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 20 amp power rating. For this listing, part number LXA9500 is the main reference point. Listed voltage is 24. Listed output rating is 20. Published fitment references include CASE 850, CASE 855, CATERPILLAR 120G. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It uses an internal regulator. For this listing, part number LXA9500 is the main reference point. Listed voltage is 24. Listed output rating is 20. Published fitment references include CASE 850, CASE 855, CATERPILLAR 120G. These details should still be checked against the original unit before ordering.

What mounting details should I check?

Check the twin leg mount, 198mm mount centre to centre, 101mm inside mounting legs, and 13mm pivot hole diameter. For this listing, part number LXA9500 is the main reference point. Listed voltage is 24. Listed output rating is 20. Published fitment references include CASE 850, CASE 855, CATERPILLAR 120G. These details should still be checked against the original unit before ordering.

Is this a new or remanufactured unit?

It is listed as new. For this listing, part number LXA9500 is the main reference point. Listed voltage is 24. Listed output rating is 20. Published fitment references include CASE 850, CASE 855, CATERPILLAR 120G. These details should still be checked against the original unit before ordering.

What warranty is provided?

The warranty listed is 3 years for passenger use and 1 year for commercial use. For this listing, part number LXA9500 is the main reference point. Listed voltage is 24. Listed output rating is 20. Published fitment references include CASE 850, CASE 855, CATERPILLAR 120G. These details should still be checked against the original unit before ordering.