Mahle Starter Motor 12V 10T CW MS89 3.4KW Reduction Gear

The Mahle starter motor MS89 is a new 12V unit with 10 teeth, clockwise rotation, and a 3.4kW power rating. It is a reduction gear starter with a 2 hole mount type, 2 mounting bores, and a 82mm flange diameter, so the physical mounting details should be checked carefully before ordering.

Key measured dimensions include 105mm mount centres, 13.5mm mount hole diameter, 32mm pinion diameter, 35mm pinion at rest, and 38.0 flywheel depth. Those figures matter because starter fitment depends on both electrical specification and the mechanical engagement points, not just the voltage or tooth count.

This Mahle starter motor is listed as part number MS89 and is supplied new, not remanufactured. It carries a one year warranty and is described as suitable for dry clutch applications, with EMC compliance and resistance to salt, fog, humidity, water, dust, mud, vibration, extreme temperatures, and aggressive liquids.

Key Features

• 12V starter motor with 10 teeth
• Clockwise rotation (CW)
• 3.4kW power rating
• Reduction gear design
• 2 hole mount type with 2 mounting bores
• New unit with one year warranty

Specifications

• Brand: Mahle
• Part No.: MS89
• Product type: Starter motor
• Voltage: 12V
• Number of teeth: 10
• Rotation: CW
• Power rating: 3.4kW
• Starter mount type: 2 hole

Verified fitment references

• BOBCAT 975
• JOHN DEERE 2020
• JOHN DEERE 2030
• JOHN DEERE 2040
• JOHN DEERE 2054
• JOHN DEERE 210C
• JOHN DEERE 2120
• JOHN DEERE 2130

Application and Buying Notes

Before fitting, match the starter against the existing unit’s part number, mounting pattern, and engagement dimensions. For this Mahle MS89 unit, the important checkpoints are 12V operation, 10 tooth count, clockwise rotation, 105mm mount centres, 82mm flange diameter, and 13.5mm mounting bores.

The 3.4kW rating and reduction gear design are part of the specification, but they still need to align with the vehicle or machine application. If the original starter differs in tooth count, rotation, mount centres, or flywheel depth, do not assume interchangeability even if the equipment brand appears in the fitment references.

Fitment references include Bobcat 975 and several John Deere applications. That gives a useful starting point, but the safest approach is to confirm the existing starter markings, compare the physical measurements, and check the installation space around the pinion diameter of 32mm and pinion at rest measurement of 35mm.

The listed environmental resistance is relevant where the starter is exposed to moisture, dust, mud, vibration, and temperature extremes. It does not replace correct fitment checks, and it should be treated as a material and design characteristic rather than a substitute for confirming the exact application.

If you are replacing an older starter, compare the existing unit’s mount type, hole spacing, and flywheel depth with the figures supplied here. The combination of 2 hole mounting, 38.0 flywheel depth, and clockwise rotation is especially important because these details affect how the starter meshes and sits in the housing.

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 MS89 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 105mm, Number of Teeth 10, Pinion Diameter 32mm, Rotation CW, Voltage 12, Item Type Starter Motor, Starter Mount Type 2 Hole.

Additional published details for cross-checking include Transmission Type with reduction gear, Number of mounting bores 2, For flywheel depth 38.0, Packaging length 38.2, Packaging height 14.50, Product Group 2 STARTER MOTORS, Part No. MS89, Brand MAHLE, Description Mahle Starter Motor 12V 10Th CW.

Mahle Starter Motor 12V 10Th CW. Part number MS89 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 MS89, 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 BOBCAT 975, JOHN DEERE 2020, JOHN DEERE 2030, JOHN DEERE 2040, JOHN DEERE 2054. 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 MS89, the 12V 10T CW specification, and the listed mounting and engagement dimensions against the unit being replaced. Where application details and physical measurements do not agree, rely on the existing starter and machine identification before ordering.

FAQ

What is the part number for this starter motor?

The part number is MS89.

Is this a new or remanufactured starter motor?

It is listed as new.

What voltage and rotation does it have?

It is a 12V starter motor with clockwise (CW) rotation.

How many teeth does the pinion have?

The starter has 10 teeth.

What mounting details are supplied?

The listed mounting details are 2 hole mount type, 2 mounting bores, 105mm mount centres, 82mm flange diameter, and 13.5mm mount hole diameter.

Which applications are referenced?

Referenced applications include Bobcat 975 and a range of John Deere models, including 2020, 2030, 2040, 2054, 210C, 2120, 2130, 2140, 2240, 240, 250, 270, 280, 300D, 310D, 310E, 310G, 310SE, 310SG, 315D, 315SE, 315SG, 350, 355D, 400G, 410D, 410E, 410G, 510D, 5115R, 5125R, and 5420N. Confirm against the exact machine and existing starter before purchase.