OEX Alternator 12V 100A Delco 10SI Style DXA9129

The OEX alternator listed here is a 12V, 100A unit in Delco 10SI style, with part number DXA9129. It is a new alternator, supplied as each, and uses an internal regulator with a single leg mount.

Key physical details include a 70mm pulley outside diameter, A section pulley, 17 shaft dimension, 51mm mount leg thickness, 167mm mount centre to centre, and M8 x 1.25 adjusting hole diameter with a 10mm pivot hole. At 6.35kg, it is a substantial rotating electrical component and should be checked carefully against the original unit before purchase.

This unit is described as fitting Delco applications and includes a chrome finish, billet style pulley, custom fan, and self exciting setup. The build is backed by OEX warranty cover of 3 years for passenger use and 1 year for commercial use.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with ISO9001 certified factory sourcing to support engineering, testing, and quality control procedures. That matters when you are matching a replacement alternator to an existing Delco 10SI style application.

Key Features

• 12V, 100A alternator
• Delco 10SI style
• Part number DXA9129
• Internal regulator
• Single leg mount
• New unit

Specifications

• Brand: OEX
• Product type: Alternator
• Series: 10SI
• Voltage: 12V
• Power rating: 100A
• Suits unit make: Delco
• Mount type: Single leg
• Mount leg thickness: 51mm

Known fitment applications supplied

• Alfa Romeo Giulia
• Case IH 2090, 2290, 2294, 2390, 2394, 2470, 2590, 2670, 4690
• Chevrolet C10, C20, C30, Camaro, Corvette, Impala
• Holden H Series, Monaro
• International Harvester 674, 886, 986, 1086, 1460, 1480, 1486, 1566, 4186, 4366, 4386, 6388, 6588
• John Deere 4030
• Le Tourneau L1350
• Massey Ferguson 1085

Application and Buying Notes

Before ordering, compare the part number DXA9129 and the alternator style carefully against the removed unit. The key checking points here are 12V output, 100A rating, Delco 10SI series, internal regulator, single leg mount, and the listed mounting dimensions of 51mm mount leg thickness and 167mm centre to centre.

The pulley setup also needs attention. This alternator uses an A section pulley with a 70mm outside diameter, so the belt profile and pulley size should match the vehicle’s charging system requirements. The 17 shaft dimension, M8 x 1.25 adjusting hole, and 10mm pivot hole are the kinds of details that can stop a straightforward installation if they do not line up with the original bracketry.

Because fitment for alternators can vary within the same make or model, it is wise to verify the application by part number, mounting arrangement, regulator type, and pulley configuration. The supplied fitment list includes a broad range of Alfa Romeo, Case IH, Chevrolet, Holden, International Harvester, John Deere, Le Tourneau, and Massey Ferguson applications, but that does not replace checking the actual vehicle or machine specification.

The chrome finish, billet style pulley, custom fan, and self exciting note describe the unit supplied, but they should still be assessed in the context of the vehicle’s charging system and available space. At 6.35kg, this is not a light replacement, so ensuring the mounting ears, clearance, and belt alignment are correct is sensible before fitting.

If you are replacing an older Delco-style alternator, compare the old and new units side by side where possible. A correct match means the mounting points, regulator arrangement, pulley type, and electrical connection requirements all suit the application before the vehicle goes back into service.

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 DXA9129 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, Mount Leg Thickness 51mm, Power Rating (Amp) 100, Pulley Section A, Series 10SI, Voltage 12, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Weight 6.35kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXA9129, Brand OEX, Description OEX Alternator 12V 100A Delco 10SI Style, Adjusting Hole Diameter M8 x 1.25, Pivot Hole Diameter 10, Pulley Outside Diameter 70mm, Regulator Type Internal, Suits Unit Make Delco.

OEX Alternator 12V 100A Delco 10SI Style. Part number DXA9129 should be checked first. Listed voltage is 12. Listed output rating is 100. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single 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 DXA9129, 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 100 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment using part number DXA9129, the Delco 10SI style, the single leg mount, and the listed mounting and pulley dimensions before ordering or fitting.

FAQ

What is the part number for this alternator?

The part number listed is DXA9129.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What voltage and amperage does it have?

It is a 12V alternator with a 100A power rating.

Does it use an internal regulator?

Yes. The regulator type is listed as internal.

What mounting details should I check?

Check the single leg mount setup, 51mm mount leg thickness, 167mm mount centre to centre, M8 x 1.25 adjusting hole diameter, and 10mm pivot hole diameter.

What warranty is supplied?

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