OEX Alternator 12V 100A Delco 27SI Style DXA9116

The OEX Alternator DXA9116 is a 12V, 100A unit built in Delco 27SI style, with a twin leg alternator mount and internal regulator. It is listed as a new alternator, not remanufactured, and weighs 8.52kg, so it is intended for applications that need a substantial rotating electrical unit rather than a compact passenger-style alternator.

Key mounting measurements are provided for checking against the vehicle or machinery before purchase: inside mounting legs are 101mm, mount centre to centre is 215mm, the pivot hole diameter is 13mm, and the adjusting hole diameter is 1/2 UNC. The shaft diameter is 22mm, which is another useful checkpoint when comparing against the existing unit.

This alternator is identified as part number DXA9116 and suits Delco unit applications in the 27SI series. That combination of part number, voltage, output, mounting style and shaft dimensions is the safest way to confirm whether it is the correct replacement for your machine, especially where several similar alternators have been used over time.

Key Features

• 12V alternator with 100A output
• Delco 27SI style
• Internal regulator
• Twin leg mount
• New unit
• Part number DXA9116

Specifications

• Brand: OEX
• Product type: Alternator
• Series: 27SI
• Suits unit make: Delco
• Voltage: 12
• Power rating: 100A
• Mount type: Twin leg
• Inside mounting legs: 101mm

Fitment guidance

• Suits listed applications including CASE 9150, CATERPILLAR 12H, CATERPILLAR 3126, CLARK 101, CLARK 301, CUMMINS VT-555C, INTERNATIONAL ACCO, IVECO ACCO, TEREX TS-14B and VERSATILE 555.
• The fitment data also shows broader application groups across CASE, CATERPILLAR, CLARK, CUMMINS, INTERNATIONAL, IVECO, TEREX and VERSATILE.
• Some listed applications include year references such as CASE 9150 1986 to 1993, CATERPILLAR 12H 2001, CATERPILLAR 3126 1999, CLARK 101 1973, CUMMINS VT-555C 1984, INTERNATIONAL ACCO 1983 to 1993, IVECO ACCO 2001 to 2011, TEREX TS-14B 1976 and VERSATILE 555 1983.

Application and Buying Notes

When checking replacement alternators, the safest starting points are the part number DXA9116, the Delco 27SI series, and the 12V 100A rating. Those details need to align with the unit already fitted, because similar-looking alternators can differ in output, regulator type and mounting dimensions.

The mounting measurements matter just as much as the electrical rating. This unit has 101mm inside mounting legs, 215mm mount centre to centre, a 13mm pivot hole, a 1/2 UNC adjusting hole and a 22mm shaft diameter, so measure the existing alternator before ordering if the application is not already confirmed.

Because this is a twin leg mount alternator with an internal regulator, it should be matched carefully to the original arrangement. If your current unit uses a different mount pattern, different shaft size or an external regulator setup, the DXA9116 may not be the correct replacement even if the plug or body shape appears similar.

The supplied fitment information covers a wide range of heavy equipment and commercial applications, but it is still best practice to compare the machine model, year where available, and the existing alternator details. That is the most reliable way to avoid ordering the wrong unit and having to rework brackets or wiring.

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 DXA9116 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) 100, Series 27SI, Suits Unit Make Delco, Alternator Mount Twin Leg, New / Reman. New, Weight 8.52kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA9116, Brand OEX, Description OEX Alternator 12V 100A Delco 27SI Style, Adjusting Hole Diameter 1/2 UNC, Pivot Hole Diameter 13, Regulator Type Internal, Shaft Diameter 22mm, Voltage 12, Mount Cnt to Cnt 215mm.

OEX Alternator 12V 100A Delco 27SI Style. Part number DXA9116 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 Twin Leg. Regulator type is Internal. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA9116, 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.

Available application references include CASE 9150, CASE 9150 1986, CASE 9150 1987, CASE 9150 1988, CATERPILLAR 12H, CATERPILLAR 12H 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 DXA9116, the Delco 27SI style, 12V 100A output, twin leg mount, internal regulator and the listed mounting measurements before ordering.

FAQ

What is the part number for this alternator?

The part number is DXA9116.

What voltage and output does it have?

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

Is this a new unit or a remanufactured unit?

It is listed as a new alternator.

What mounting style does it use?

It uses a twin leg alternator mount with 101mm inside mounting legs and 215mm mount centre to centre.

Does it have an internal or external regulator?

It has an internal regulator.

What warranty is listed?

The warranty is listed as 3yr Passenger and 1yr Commercial.