Nikko Starter Motor 24V 12T CW NXS617

This Nikko starter motor is a new 24V unit with 12 teeth, clockwise rotation, and part number NXS617. It is listed as a 5.5kW starter motor with a 3 hole mount type, 126mm mount centres, and a 100mm flange diameter, making the key physical and electrical identifiers easy to check before ordering.

The unit weighs 11.5kg, has an overall length of 350mm, a pinion diameter of 48mm, and a pinion at rest measurement of 25mm. Those dimensions matter when you are comparing the starter against the existing unit, especially on applications where mounting pattern and clearance are critical.

It is described as suitable for Nikko units and is intended for wet or dry clutch use. The product is built to withstand harsh environments, and it carries a one year warranty for added purchasing confidence when replacing an existing 24V starter motor.

Key Features

• 24V starter motor
• 12 tooth pinion
• Clockwise rotation
• 5.5kW power rating
• 3 hole mount type
• New unit

Specifications

• Brand: Nikko
• Part number: NXS617
• Type: Starter motor
• Voltage: 24V
• Power rating: 5.5kW
• Number of teeth: 12
• Rotation: CW
• Starter mount type: 3 hole

Fitment guidance

• KOMATSU D31EX/PX-22
• KOMATSU D37-5
• KOMATSU D37P-2
• KOMATSU PC130-7
• KOMATSU PC130-8
• KOMATSU PC138
• KOMATSU PC138US-2
• KOMATSU PC138US-8

Application and Buying Notes

Before ordering, compare the part number NXS617 with the number on your existing starter motor and check the mounting pattern against the 3 hole mount type. The listed mount centres are 126mm across A, B, and C, and the flange diameter is 100mm, so those measurements are useful when matching the replacement to the original unit.

Electrical and drive details also need to line up. This unit is 24V, has 12 teeth, rotates clockwise, and is rated at 5.5kW, so it should only be matched to an application that calls for those exact starter characteristics. The pinion diameter is 48mm and the pinion at rest measurement is 25mm, which are both worth checking if you are comparing several similar starters.

The listed fitment includes KOMATSU applications such as D31EX/PX-22, D37-5, D37P-2, PC130-7, PC130-8, PC138, PC138US-2, PC138US-8, PC78US-8, PC78UU-8, PC88, PC88MR-8, PW98MR-8, WA100-1, WA100-3, WA100M-6, WA120, WA150, WA150-3, WA180, WA180-1, WA200PZ-6, WA380, and WA90-6. Even with that application range, the safest check is always the part number and the physical measurements on the machine already fitted.

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 NXS617 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 One Year, Mount Centres A 126mm, Mount Centres C 126mm, Number of Teeth 12, Pinion at Rest 25mm, Power Rating 5.5kW, Suits Unit Make Nikko, Item Type Starter Motor.

Additional published details for cross-checking include Starter Mount Type 3 Hole, Weight 11.5kg, Product Group 1 ROTATING ELECTRICAL, Part No. NXS617, Brand NIKKO, Description Nikko Starter Motor 24V 12Th CW, Flange Diameter 100mm, Mount Centres B 126mm, Mount Hole Diameter 17, Overall Length 350mm.

Nikko Starter Motor 24V 12Th CW. Part number NXS617 should be checked first. Listed voltage is 24. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number NXS617, 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 24 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5, KOMATSU D37-5 1995. 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 One Year. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Confirm fitment by matching part number NXS617, the 24V electrical specification, the 12 tooth clockwise configuration, and the 3 hole mounting measurements before ordering.

FAQ

What is the part number for this starter motor?

The part number listed is NXS617. For this listing, part number NXS617 is the main reference point. Listed voltage is 24. Published fitment references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5. These details should still be checked against the original unit before ordering.

Is this a 12 volt or 24 volt starter motor?

This is a 24V starter motor. For this listing, part number NXS617 is the main reference point. Listed voltage is 24. Published fitment references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5. These details should still be checked against the original unit before ordering.

Which direction does this starter rotate?

It is clockwise rotation, listed as CW. For this listing, part number NXS617 is the main reference point. Listed voltage is 24. Published fitment references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5. These details should still be checked against the original unit before ordering.

How many teeth does the pinion have?

The pinion has 12 teeth. For this listing, part number NXS617 is the main reference point. Listed voltage is 24. Published fitment references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5. These details should still be checked against the original unit before ordering.

What mounting details are provided?

It is a 3 hole mount type with 126mm mount centres A, B, and C, a 100mm flange diameter, and 17mm mount hole diameter. For this listing, part number NXS617 is the main reference point. Listed voltage is 24. Published fitment references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5. These details should still be checked against the original unit before ordering.

Is this starter new or remanufactured?

It is listed as new. For this listing, part number NXS617 is the main reference point. Listed voltage is 24. Published fitment references include KOMATSU D31EX/PX-22, KOMATSU D31EX/PX-22 2009, KOMATSU D37-5. These details should still be checked against the original unit before ordering.