OEX Alternator 12V 160A Denso Style DXA4050M

The OEX Alternator DXA4050M is a 12V, 160A unit in Denso style, supplied new and set up with an internal regulator. It uses a single leg alternator mount, a 7 groove pulley, and clockwise rotation, so matching the physical layout matters as much as the electrical rating when confirming application.

This alternator is listed with a 58mm mount leg thickness, an M8 x 1.25 adjusting hole diameter, and a 58mm pulley outside diameter. It weighs 6.8kg and is intended for Denso applications, which makes the part number and mounting details the safest way to confirm the correct replacement before ordering.

OEX lists this unit with a 3 year passenger and 1 year commercial warranty. The product is a new alternator, not remanufactured, and the supplied note advises care where a lower output alternator is being replaced with a higher output unit such as 130A or 160A.

If you are upgrading from an 85A alternator to either the 130A or 160A version, OEX recommends upgrading the battery cable and the fuse from the alternator to the battery. That advice is particularly relevant on vehicles with higher electrical loads or older charging wiring.

Key Features

• 12V alternator, 160A output
• Denso style, suits Denso unit make
• New unit with internal regulator
• Single leg alternator mount
• 7 groove pulley, clockwise rotation
• Part number DXA4050M

Specifications

• Type: Alternator
• Brand: OEX
• Part No.: DXA4050M
• Voltage: 12V
• Power rating: 160A
• Rotation: Clockwise (CW)
• Pulley section: 7 groove
• Alternator mount: Single leg

Fitment and application details

• Suits unit make: Denso
• Fitment information supplied for Toyota and Daihatsu applications, including Dahiatsu Delta, Toyota Hiace / Commuter, Toyota Hilux, Toyota Land Cruiser Prado, and Toyota Regius Ace
• Fitment preview includes Toyota Hiace / Commuter model years from 2004 through 2013
• Fitment preview includes Daihatsu Delta model years from 2003 through 2006

Application and Buying Notes

Check the alternator against the existing unit before ordering, especially the part number DXA4050M, the single leg mount, and the 58mm mount leg thickness. The 12V, 160A output is a significant specification, and the physical mounting and pulley details need to line up with the vehicle’s charging system.

The 7 groove pulley and clockwise rotation are important matching points. If the replacement alternator has a different pulley section, rotation, or regulator arrangement, it may not suit the same vehicle even if the general shape looks similar.

Because this is a higher output 160A alternator, OEX recommends upgrading the battery cable and the alternator-to-battery fuse when replacing an 85A unit with either the 130A or 160A version. That is a practical wiring check rather than an optional extra when the vehicle’s original charging circuit was set up for a lower output unit.

The alternator is supplied as a new unit with an internal regulator, so it is intended as a direct replacement where those features match the original application. Weight, pulley outside diameter, and adjusting hole size are also useful cross-checks when comparing against the removed alternator or vehicle specifications.

If your vehicle is listed across several model years, confirm the exact application by part number and charging system layout rather than relying only on the badge or model family. That is especially important on Toyota Hiace / Commuter, Dahiatsu Delta, and other Denso-equipped vehicles where similar-looking alternators can vary in mounting and output.

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 DXA4050M 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) 160, Pulley Section 7 Groove, Rotation CW, Voltage 12, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Weight 6.8kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXA4050M, Brand OEX, Description OEX Alternator 12V 160A Denso Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR115, Pulley Outside Diameter 58mm, Regulator Type Internal, Suits Unit Make Denso.

OEX Alternator 12V 160A Denso Style. Part number DXA4050M should be checked first. Listed voltage is 12. Listed output rating is 160. 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 7 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4050M, 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 160 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by matching the part number DXA4050M, the Denso style application, the single leg mount, the 12V 160A rating, and the pulley and rotation details against the existing alternator and vehicle requirements before purchase.

FAQ

What is the part number for this alternator?

The part number listed is DXA4050M.

What voltage and output does this alternator have?

It is a 12V alternator with a 160A power rating.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What type of regulator does it use?

It uses an internal regulator.

Does the alternator use a 7 groove pulley?

Yes. The pulley section is listed as 7 groove, and the pulley outside diameter is 58mm.

What should be checked when replacing a lower output alternator?

OEX recommends upgrading the battery cable and the fuse from the alternator to the battery when replacing an 85A alternator with either the 130A or 160A unit.