OEX Alternator 12V 110A Denso Style DXA4031

The OEX Alternator DXA4031 is a 12V, 110A new alternator built in a Denso style layout, with an internal regulator and a single-leg alternator mount. It suits applications that require a 5 groove pulley, a 65mm pulley outside diameter, and a mount leg thickness of 58mm.

This unit is listed with a 167mm mount centre-to-centre measurement and an M8x1.25 adjusting hole diameter. Those dimensions matter when you are matching the replacement to the existing alternator and bracket arrangement, particularly on vehicles where the mounting points and pulley alignment need to line up closely.

OEX positions this alternator as a quality replacement part sourced from original equipment manufacturers and aftermarket suppliers, with ISO9001 certified factory production. It is backed by a 3 year passenger vehicle warranty and 1 year commercial warranty, which is important context if the vehicle is used regularly and the alternator is expected to cope with steady electrical demand.

Key Features

• 12V alternator with 110A output
• New unit, not remanufactured
• Denso style replacement design
• Internal regulator
• Single-leg alternator mount
• 5 groove pulley setup

Specifications

• Voltage: 12V
• Power rating: 110A
• Type: Alternator
• New / Reman.: New
• Suits unit make: Denso
• Alternator mount: Single leg
• Mount leg thickness: 58mm
• Mount centre to centre: 167mm

Fitment guidance

• Verified application data includes Honda, with model coverage listed for Honda Legend across multiple model years.
• Other fitment references supplied include Honda MDX and Honda TRX500, but the exact vehicle, engine, and year details should still be checked against the part number and mounting dimensions.
• Use the part number DXA4031, the Denso style configuration, and the mounting and pulley measurements to confirm the correct replacement before ordering.

Application and Buying Notes

The most useful identifiers on this alternator are DXA4031, 12V, 110A, and the Denso style single-leg configuration. If the existing unit differs in mount layout, pulley groove count, or pulley diameter, it should not be assumed to be a direct match even if the vehicle brand appears in the application list.

Check the mounting measurements carefully: 58mm mount leg thickness, 167mm mount centre-to-centre, and an M8x1.25 adjusting hole diameter. These details are just as important as the electrical rating, because a physically incorrect alternator can create alignment issues or fail to bolt up correctly.

The 5 groove pulley and 65mm pulley outside diameter are also practical compatibility checks. If the belt system on the vehicle uses a different groove count or pulley size, the replacement may not suit the existing drive setup without further verification.

Because this unit is new and fitted with an internal regulator, it is intended as a complete replacement alternator rather than a repair component. Confirm the vehicle’s charging system layout and existing connector arrangement, including the listed pin code IR115, before committing to the purchase.

The warranty terms are different for passenger and commercial use, so it is sensible to match the intended duty cycle with the warranty coverage. A vehicle used commercially may have different expectations around service intervals, load, and operating hours compared with a passenger vehicle.

If you are comparing this part to a removed alternator, compare the housing mount style, pulley arrangement, and part number together. Matching only on amperage is not enough, particularly where Denso style alternators and multiple application variants are involved.

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 DXA4031 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 58mm, Power Rating (Amp) 110, Pulley Section 5 Groove, Suits Unit Make Denso, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA4031, Brand OEX, Description OEX Alternator 12V 110A Denso Style, Adjusting Hole Diameter M8x1.25, Pin Code IR115, Pulley Outside Diameter 65mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 167mm.

OEX Alternator 12V 110A Denso Style. Part number DXA4031 should be checked first. Listed voltage is 12. Listed output rating is 110. 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 5 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4031, 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 110 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment by checking part number DXA4031, the Denso style layout, the 12V 110A rating, and the mounting and pulley dimensions against the vehicle before ordering. Fitment data supplied includes Honda applications, but final compatibility still needs to be verified against the exact vehicle and alternator currently fitted.

FAQ

What is the part number for this alternator?

The part number is DXA4031.

Is this alternator new or remanufactured?

It is listed as new.

What voltage and output does it have?

It is a 12V alternator with a 110A power rating.

What type of regulator does it use?

It has an internal regulator.

What pulley setup does it have?

It has a 5 groove pulley with a 65mm outside diameter.

What warranty is listed?

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