Denso Starter Motor 12V 10 Tooth CW DXS638

The Denso starter motor DXS638 is a new 12V unit with 10 teeth and clockwise rotation, suited to a Denso application. It is rated at 4.8kW and uses a 3-hole starter mount, with mount centres of 127mm and 90mm, so matching the mounting pattern is an important check before ordering.

This starter motor is listed with an overall length of 310mm, a flange diameter of 89mm, and a 40mm pinion diameter. The pinion at rest measures 48mm, the mount hole diameter is 11.5mm, and the unit weighs 10.18kg, all of which are useful physical checks when comparing to the removed starter.

It is described as being able to replace a 9 tooth unit, and it is suitable for wet or dry clutch applications. The unit has a one year warranty and is identified by part number DXS638, which should be confirmed against the vehicle application before purchase.

Key Features

• New Denso starter motor
• 12V, 10 tooth, clockwise rotation
• Rated output: 4.8kW
• 3-hole starter mount
• Will replace 9 tooth unit
• Suitable for wet or dry clutch applications

Specifications

• Brand: Denso
• Part No.: DXS638
• Voltage: 12V
• Rotation: CW
• Number of teeth: 10
• Power rating: 4.8kW
• Starter mount type: 3 hole
• Mount centres A: 127mm

Verified fitment references

• CASE 5230
• CASE 533/A
• CASE 6000
• CASE 6030
• CASE 6500
• CASE 680H
• CASE 680L
• CASE 780B

Application and Buying Notes

Before ordering, check the part number DXS638 and compare the physical details on your original starter, including the 12V rating, clockwise rotation, 10 tooth pinion, and 3-hole mount. The published mount centres of 127mm and 90mm, plus the 89mm flange diameter and 11.5mm mount hole diameter, are the quickest way to confirm whether the replacement will physically align.

If the starter on the machine is damaged or missing, measure the overall length of 310mm, the pinion diameter of 40mm, and the pinion at rest dimension of 48mm before ordering. These measurements are practical confirmation points when the part number is not visible or when the existing unit has been repaired or modified.

The fitment references supplied with this starter include several CASE and CASE IH applications, but they should be treated as references only unless they match your specific machine and build details. Variations can occur within the same model family, so the safest approach is to verify the starter by part number, mount pattern, rotation, and tooth count together.

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 DXS638 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 127mm, Mount Centres C 90mm, Number of Teeth 10, Pinion at Rest 48mm, Power Rating 4.8kW, Suits Unit Make Denso, Note Will replace 9 Tooth.

Additional published details for cross-checking include Starter Mount Type 3 Hole, Weight 10.18kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXS638, Brand DENSO, Description Denso Starter Motor 12V 10Th CW, Flange Diameter 89mm, Mount Centres B 90mm, Mount Hole Diameter 11.5, Overall Length 310mm.

Denso Starter Motor 12V 10Th CW. Part number DXS638 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 DXS638, 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 CASE 5230, CASE 5230 1992, CASE 5230 1993, CASE 5230 1994. 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 using part number DXS638 and the exact application details on your vehicle or machine. Check the 12V rating, clockwise rotation, 10 tooth pinion, 3-hole mount, and the listed measurements before ordering.

FAQ

What is the part number for this starter motor?

The part number is DXS638. For this listing, part number DXS638 is the main reference point. Listed voltage is 12. Published fitment references include CASE 5230, CASE 5230 1992, CASE 5230 1993. These details should still be checked against the original unit before ordering.

Is this starter motor new or remanufactured?

It is listed as new. For this listing, part number DXS638 is the main reference point. Listed voltage is 12. Published fitment references include CASE 5230, CASE 5230 1992, CASE 5230 1993. These details should still be checked against the original unit before ordering.

What voltage and rotation does it have?

It is a 12V starter motor with clockwise rotation. For this listing, part number DXS638 is the main reference point. Listed voltage is 12. Published fitment references include CASE 5230, CASE 5230 1992, CASE 5230 1993. These details should still be checked against the original unit before ordering.

How many teeth does the pinion have?

It has 10 teeth, and it is noted as a replacement for a 9 tooth unit. For this listing, part number DXS638 is the main reference point. Listed voltage is 12. Published fitment references include CASE 5230, CASE 5230 1992, CASE 5230 1993. These details should still be checked against the original unit before ordering.

What mounting details should I check?

Check the 3-hole starter mount, mount centres of 127mm and 90mm, flange diameter of 89mm, and mount hole diameter of 11.5mm. For this listing, part number DXS638 is the main reference point. Listed voltage is 12. Published fitment references include CASE 5230, CASE 5230 1992, CASE 5230 1993. These details should still be checked against the original unit before ordering.

Which applications are referenced for fitment?

Referenced applications include CASE 5230, CASE 533/A, CASE 6000, CASE 6030, CASE 6500, CASE 680H, CASE 680L, CASE 780B, CASE IH 5130 Maxxum, CASE IH 5140 Maxxum, CASE IH 5240 Maxxum, CASE IH 5250 Maxxum, CASE IH Maxxum, CASE IH SPX, and CASE W602D.