OEX Alternator 12V 40A Denso Style DXA474

The OEX Alternator DXA474 is a 12V, 40A unit made in a Denso style configuration and supplied new as a single alternator each. It suits unit make Denso and carries an internal regulator, which are the key identifiers to check when comparing against an existing charging system.

Important physical details include a 74mm pulley outside diameter, a 24mm mount leg thickness, a 10mm pivot hole diameter, and a mount centre to centre measurement of 138mm. The adjusting hole is M8 x 1.25, the pulley section is A, and the shaft dimension is 15, so matching the mounting and drive arrangement matters just as much as matching the electrical rating.

This alternator is part of OEX rotating electrical range and is backed by a 3 year passenger / 1 year commercial warranty. OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, and are made in ISO9001 certified factories under engineering, testing, and quality control procedures.

Key Features

• 12V alternator with 40A power rating
• Denso style unit
• Internal regulator
• Single leg alternator mount
• New unit, sold each
• A section pulley

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: DXA474
• Description: OEX Alternator 12V 40A Denso Style
• Voltage: 12V
• Power rating: 40A
• Suits unit make: Denso
• Regulator type: Internal

Fitment guidance

• This alternator is listed against Denso-style applications.
• Verified fitment includes Active AE18U, Airman AX10U-4, AX17U-6A and AX27, Ammann AV12, AV16 and AV20, ASV RT-30, and Bobcat 322, 323, 324, 325, 328, 329, 418, 425, 428, 463, E08 and E10.
• Other listed makes include Case 1825B and Maxi Sneaker, Caterpillar 300.9D, 304C, 304CCR, 305.5DCR, 305C, 305CCR, 305DCR and 904B, Cub Cadet various, Daihatsu Charade Centro, Hijet and Mira, Dynapac CC800, CC900 and CC1000, Eurocomach ES15SR, ES150.5SR, ES18ZT and ES180ZT.
• Further listed applications include Hitachi EX12, EX15, EX25-2, EX30-2, EX35-2, LX15, LX20, LX30, LX40, ZW40, ZW50 and ZX10U-2; IHI 15NX2, 15VX and 17VX-3; JCB 8018CTS, 8018X, 8025ZTS, 8026CTS, 8030ZTS and 8035ZTS.
• John Deere applications listed include 15, 17D, 3029D, 317, 425, 445, 455, 50 ZTS, 5310N, 675/B, 755 and 855; additional listed makes include Kobelco SK17SR-5, Komatsu FG10, FG10-10, FG14, FG14-10, FG15/10, FG15DT-15, FG18D, L-15, PC30MR-2, PC30MRX, PC35R-8 and SK05J-2.
• Kubota applications listed include 5FDL10, A49G2, B21, B26, BX22, BX23LB, BX25, D1105, D1105-BG, D1105-T, D1503-M and D1703-M.

Application and Buying Notes

When replacing an alternator, the safest check is to compare the part number DXA474, the Denso style designation, and the mounting dimensions. The 12V, 40A output, internal regulator, 138mm mount centre to centre measurement, and M8 x 1.25 adjusting hole are all practical checkpoints before you order.

The pulley details also need attention. This unit has a 74mm outside diameter pulley with an A section belt profile, so the belt type and pulley alignment should be confirmed against the existing unit rather than assumed from the electrical rating alone.

The alternator is listed as a new unit and weighs 2.94kg. Those details can help when comparing against an old part, but the most reliable way to avoid a mismatch is to match the physical mounting points, pulley arrangement, and application listing together.

Because the fitment list spans multiple compact machines, small tractors, utility equipment and related applications, do not rely on make alone. Confirm the exact model, the engine or unit arrangement where relevant, and the alternator on the machine now before fitting, especially where Denso-style units may have close visual similarities but different mount or pulley details.

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 DXA474 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 24mm, Pivot Hole Diameter 10, Pulley Outside Diameter 74mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 138mm, Shaft Dimension 15.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA474, Brand OEX, Description OEX Alternator 12V 40A Denso Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR17, Power Rating (Amp) 40, Pulley Section A, Suits Unit Make Denso.

OEX Alternator 12V 40A Denso Style. Part number DXA474 should be checked first. Listed voltage is 12. Listed output rating is 40. 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 DXA474, 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.

Compatibility note: Confirm fitment using part number DXA474, the Denso style application, the 12V 40A rating, and the listed mounting and pulley measurements before purchase. If your existing alternator differs in mount leg thickness, pivot hole size, mount centre to centre measurement, pulley section, or regulator type, it should be checked carefully against the vehicle or machine application.

FAQ

Is this alternator new or remanufactured?

It is listed as a new alternator, sold each.

What is the voltage and output rating?

It is a 12V alternator with a 40A power rating.

What type of regulator does it use?

It has an internal regulator.

What is the part number?

The listed part number is DXA474.

What belt type does the pulley suit?

The pulley section is A, and the pulley outside diameter is 74mm.

How should fitment be confirmed?

Confirm the part number, Denso style application, 12V 40A rating, and the listed dimensions including 138mm mount centre to centre, 10mm pivot hole diameter, and M8 x 1.25 adjusting hole.