Mahle Starter Motor 12V 10 Tooth CW MS291

The Mahle MS291 is a new 12V starter motor with 10 teeth and clockwise rotation, supplied as a starter motor for applications that match the listed dimensions and electrical arrangement. It is a reduction gear unit with a 4.2kW power rating, 3 hole starter mount type, and a negative connection on the CE housing.

Key physical checks for this unit include 146mm mount centres A, 103mm mount centres B and C, a 92mm flange diameter, 11mm mount hole diameter, and a 40mm pinion diameter. The pinion sits 21mm at rest, and the tooth pitch is 15.42 with a 52.0 degree connecting angle.

Mahle lists this starter motor under part number MS291, and it is noted as not suitable for 3 cylinder applications. As a 12V unit with clockwise rotation and reduction gear drive, it needs to be matched carefully to the original starter configuration rather than selected by brand alone.

Key Features

• 12V starter motor
• 10 tooth pinion
• Clockwise rotation
• Reduction gear design
• 4.2kW power rating
• 3 hole starter mount type

Specifications

• Brand: Mahle
• Part number: MS291
• Unit of measure: Each
• Voltage: 12V
• Number of teeth: 10
• Rotation: CW
• Transmission type: with reduction gear
• Power rating: 4.2kW

Verified application groups

• CASE IH: 1394, 1594, 1690
• FORD: 3000-Series, 4000-Series, 5000-Series, 6000-Series, 7000-Series, 8000-Series
• NEW HOLLAND: 5600, 655E, 8730, 8830, 9600, 9700, TW

Application and Buying Notes

Before ordering, confirm the original starter matches the Mahle MS291 layout: 12V system, 10 tooth pinion, clockwise rotation, reduction gear drive, and 3 hole mount arrangement. The listed mounting dimensions are specific, including 146mm mount centres A, 103mm mount centres B and C, and a 92mm flange diameter, so those measurements should be checked against the existing unit or service information.

Mahle also notes that this starter cannot be used on 3 cylinder applications. That restriction should be treated as a hard check when identifying the correct replacement, especially on older Ford, Case IH and New Holland equipment where engine variants can differ within the same model family.

The 4.2kW rating, 40mm pinion diameter, 21mm pinion at rest dimension, and 15.42 tooth pitch help confirm whether the replacement matches the original starter’s physical and drive requirements. When in doubt, compare the part number MS291 and the existing starter’s measurements before committing to fitment.

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 MS291 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 146mm, Mount Centres C 103mm, Number of Teeth 10, Pinion Diameter 40mm, Rotation CW, Voltage 12, Item Type Starter Motor.

Additional published details for cross-checking include Starter Mount Type 3 Hole, Transmission Type with reduction gear, Bore O 1 10.9, Tooth Pitch 15.42, Connecting Angle [Degree] 52.0, Packaging length 38.2, Packaging height 14.50, Product Group 2 STARTER MOTORS, Part No. MS291.

Mahle Starter Motor 12V 10Th CW. Part number MS291 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 MS291, 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 IH 1394, CASE IH 1394 1985, CASE IH 1394 1986, CASE IH 1394 1987, FORD 3000-SERIES, FORD 3000-SERIES 1960. 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 with part number MS291, the 12V clockwise rotation, 10 tooth reduction gear specification, the 3 hole mounting pattern, and all listed dimensions before purchase. Model family compatibility should be verified against the exact application and engine configuration.

FAQ

What is the part number for this starter motor?

The part number is MS291. For this listing, part number MS291 is the main reference point. Listed voltage is 12. Published fitment references include CASE IH 1394, CASE IH 1394 1985, CASE IH 1394 1986. These details should still be checked against the original unit before ordering.

What voltage does the Mahle MS291 starter motor use?

It is a 12V starter motor. For this listing, part number MS291 is the main reference point. Listed voltage is 12. Published fitment references include CASE IH 1394, CASE IH 1394 1985, CASE IH 1394 1986. These details should still be checked against the original unit before ordering.

Does this starter rotate clockwise or counter-clockwise?

It is clockwise rotation, listed as CW. For this listing, part number MS291 is the main reference point. Listed voltage is 12. Published fitment references include CASE IH 1394, CASE IH 1394 1985, CASE IH 1394 1986. These details should still be checked against the original unit before ordering.

Is this a new or remanufactured unit?

It is listed as new. For this listing, part number MS291 is the main reference point. Listed voltage is 12. Published fitment references include CASE IH 1394, CASE IH 1394 1985, CASE IH 1394 1986. These details should still be checked against the original unit before ordering.

What mounting details should be checked before buying?

Check the 3 hole starter mount type, 146mm mount centres A, 103mm mount centres B and C, 92mm flange diameter, and 11mm mount hole diameter. For this listing, part number MS291 is the main reference point. Listed voltage is 12. Published fitment references include CASE IH 1394, CASE IH 1394 1985, CASE IH 1394 1986. These details should still be checked against the original unit before ordering.

Are there any application restrictions noted?

Yes. Mahle notes that it cannot be used on 3 cylinder applications. For this listing, part number MS291 is the main reference point. Listed voltage is 12. Published fitment references include CASE IH 1394, CASE IH 1394 1985, CASE IH 1394 1986. These details should still be checked against the original unit before ordering.