OEX Starter Motor 12V 9 Tooth CW Denso Style DXS577

The OEX starter motor DXS577 is a 12V, clockwise rotating starter motor with 9 teeth and a 1.4kW power rating. It is supplied new, uses a 2 hole starter mount, and is listed with a 66mm flange diameter and 110mm mount centres A for application matching.

This unit is described as Denso style and suited to Denso unit make applications. Key dimensions include an overall length of 190mm, pinion diameter of 29mm, pinion at rest of 17mm, and a mount hole diameter of 9mm. The starter weighs 3.62kg.

OEX positions this as a quality replacement starter motor for the Australian automotive aftermarket. The listed warranty is 3 years for passenger vehicle use and 1 year for commercial use, which is important to note when comparing against vehicles, machines, or duty cycles outside that scope.

Key Features

• 12V starter motor
• Clockwise rotation
• 9 tooth pinion
• 1.4kW power rating
• New unit
• 2 hole starter mount

Specifications

• Part number: DXS577
• Brand: OEX
• Product type: Starter motor
• Voltage: 12V
• Rotation: CW
• Number of teeth: 9
• Power rating: 1.4kW
• Mount centres A: 110mm

Verified fitment guidance

• Fitment is listed against Denso-style applications across a wide range of equipment and vehicle makes.
• Makes shown include AMMANN, ATLAS COPCO, AUSA, AVANT, BOBCAT, BOMAG, BOSS, BOXER, CARRIER, CASE, CATERPILLAR, CORMIDI, DAIHATSU, DITCH WITCH, DYNAPAC, EUROCOMACH, GEHL, GENIE, HAMM, HITACHI, HOLDEN, HUSQVARNA CONSTRUCTION, HYUNDAI CONSTRUCTION, IHI, and JACOBSEN.
• Sample applications shown include AVANT 320S, 420, 423, 520, 523, 528, 530, 630, 635, 640, R20 and R28.
• Sample applications shown include BOBCAT 220, 322, 323, 324, 418, 425, 428, 443, 463, 543, 553 and B200.
• Sample applications shown include BOMAG BMP8500, BW100ADM-2, BW80AD-2 and BW90.
• Sample applications shown include DITCH WITCH JT5, SK600, SK650, SK750/755, SK752 and XT850.
• Sample applications shown include HITACHI EX12, EX15, EX25-2, EX30-2, EX35-2, EX8, EX8-2B and LX15.
• Sample applications shown include KUBOTA A49G2, B20, B21, B26, BX22, BX23LB, BX25, D1105, D1105-BG, D1105-T, D26 and D722.

Application and Buying Notes

Check the part number DXS577 first, then compare the key physical details: 12V, CW rotation, 9 teeth, 2 hole mount, 110mm mount centres A, 66mm flange diameter, and 190mm overall length. Those measurements are the practical checkpoints that help confirm whether the replacement starter matches the original unit.

The note that 8 tooth, 9 tooth and 13 tooth are interchangeable may be useful when you are comparing related starter variants, but the rest of the unit still needs to match. Pinion diameter, pinion at rest, flange size, and mount hole layout can all affect whether the starter sits correctly and engages as expected.

Because this is a Denso style starter, it is sensible to compare the vehicle or machine application against the listed Denso unit make and the sample applications provided. Do not rely on make alone; the same brand can use different starter layouts across models, so the part number and dimensions should always be checked together.

The listed warranty is 3 years for passenger use and 1 year for commercial use on this new unit. If the starter will be used in commercial equipment, confirm that the operating duty, mounting pattern, and electrical specification match before ordering, especially where the machine runs long hours or sits in a demanding environment.

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 DXS577 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 STARTER MOTOR, Unit of Measure EACH, Warranty 3yr Passenger 1yr Commercial, Mount Centres A 110mm, Number of Teeth 9, Pinion at Rest 17mm, Power Rating 1.4kW, Suits Unit Make Denso, Note 8 tooth, 9 tooth & 13 tooth interchangeable, Starter Mount Type 2 Hole.

Additional published details for cross-checking include Weight 3.62kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXS577, Brand OEX, Description OEX Starter Motor 12V 9Th CW Denso Style, Flange Diameter 66mm, Mount Hole Diameter 9, Overall Length 190mm, Pinion Diameter 29mm, Rotation CW.

OEX Starter Motor 12V 9Th CW Denso Style. Part number DXS577 should be checked first. Listed voltage is 12. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number DXS577, 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 starter motor in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include AMMANN APH110-95, AMMANN APH85/95, ATLAS COPCO XAS 98, ATLAS COPCO XAS88, AUSA D85AHA, AVANT 320S. 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.

Compatibility note: Confirm fitment using the part number DXS577, the 12V CW specification, the 9 tooth pinion, and the 2 hole / 110mm mount-centre layout before purchase. If the existing starter differs in flange diameter, overall length, or pinion measurements, recheck the application carefully against the vehicle or equipment details.

FAQ

What is the part number for this starter motor?

The listed part number is DXS577.

Is this a 12V starter motor?

Yes. The voltage is listed as 12V.

What rotation does this starter have?

It is listed as clockwise, or CW, rotation.

How many teeth does the pinion have?

The starter is listed with 9 teeth.

Is this unit new or remanufactured?

It is listed as new.

What warranty is listed for this starter motor?

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