Mahle Starter Motor 24V 10 Tooth CW MS447

The Mahle MS447 starter motor is a new 24V unit with 10 teeth and clockwise rotation, supplied as an Original Equipment part. It is identified here with OEM number MS447 and part number MS447, which makes it straightforward to cross-check against your existing starter before ordering.

Key dimensions include a 355mm overall length, 89mm flange diameter, 127mm mount centres A, 90mm mount centres B and C, and 11.5mm mount hole diameter. It also has 3 mounting bores, a 39.6mm pinion diameter, and a 34mm pinion at rest.

This starter motor is rated at 5.5kW and suits 24V applications. It includes an auxiliary solenoid, and the flywheel depth listed is 32.5, so matching the electrical setup and physical fit is important before purchase.

Key Features

• Original Equipment part
• New starter motor
• 24V unit
• 10 tooth pinion
• Clockwise rotation
• Includes auxiliary solenoid

Specifications

• Brand: Mahle
• Part number: MS447
• OEM number: MS447
• Type: Starter motor
• Voltage: 24V
• Rotation: CW
• Number of teeth: 10
• Power rating: 5.5kW

Confirmed fitment references

• Caterpillar 3114
• Caterpillar 446D
• Caterpillar 910E
• Caterpillar 924F
• Caterpillar E110B
• Caterpillar E120B
• Caterpillar IT12B
• Caterpillar IT14B

Application and Buying Notes

Before buying, compare the MS447 part number, the 24V rating, clockwise rotation, and the 10 tooth pinion against the starter already fitted to the machine. The physical dimensions matter as well, especially the 355mm overall length, 89mm flange diameter, and the 127mm, 90mm, and 90mm mount centres.

The listed fitment references include Caterpillar applications such as 3114, 446D, 910E, 924F, E110B, E120B, IT12B, IT14B, IT24B, and IT24F. That said, engine, machine, and year combinations can vary, so the safest check is to match the part number and confirm the mount pattern, flange size, and pinion details on the removed unit.

The note that this starter includes an auxiliary solenoid is useful where the existing setup uses that arrangement. The flywheel depth of 32.5 and pinion at rest measurement of 34mm are also practical checks when confirming engagement and clearance. If any of those values differ from the unit on the machine, stop and verify before fitting.

For replacement parts like this, an exact visual match is not always enough. A starter can look similar but differ in rotation, tooth count, mounting bore layout, or pinion dimensions. Using the MS447 identifier, the 24V specification, and the listed measurements together gives you a more reliable match.

This is a new part with a one year warranty, so it is intended as a direct service replacement where the application matches. If you are working from an old starter tag or a machine record, confirm both the OE reference and the dimensions before ordering to avoid downtime and unnecessary returns.

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 MS447 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 34mm, Power Rating 5.5kW, Suits Unit Make Mahle, Note Includes auxiliary solenoid.

Additional published details for cross-checking include New / Reman. New, OEM Number MS447, Clamp 31, Number of mounting bores 3, For flywheel depth 32.5, Packaging length 38.2, Packaging height 14.50, Product Group 2 STARTER MOTORS, Part No. MS447.

Mahle Starter Motor 24V 10Th CW. Part number MS447 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 MS447, 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.

Compatibility note: Confirm compatibility using the MS447 part number, 24V specification, clockwise rotation, 10 tooth pinion, and the listed mounting and pinion dimensions before purchase.

FAQ

What is the part number for this starter motor?

The part number is MS447, and the OEM number is also listed as MS447. For this listing, part number MS447 is the main reference point. Listed voltage is 24. Published fitment references include CATERPILLAR 3114, CATERPILLAR 3114 1991, CATERPILLAR 446D. These details should still be checked against the original unit before ordering.

Is this starter motor 12V or 24V?

It is a 24V starter motor. For this listing, part number MS447 is the main reference point. Listed voltage is 24. Published fitment references include CATERPILLAR 3114, CATERPILLAR 3114 1991, CATERPILLAR 446D. These details should still be checked against the original unit before ordering.

What direction does it rotate?

It is clockwise rotation, shown as CW. For this listing, part number MS447 is the main reference point. Listed voltage is 24. Published fitment references include CATERPILLAR 3114, CATERPILLAR 3114 1991, CATERPILLAR 446D. These details should still be checked against the original unit before ordering.

How many teeth does the pinion have?

The pinion has 10 teeth. For this listing, part number MS447 is the main reference point. Listed voltage is 24. Published fitment references include CATERPILLAR 3114, CATERPILLAR 3114 1991, CATERPILLAR 446D. These details should still be checked against the original unit before ordering.

Does it include a solenoid?

Yes. The listing notes that it includes an auxiliary solenoid. For this listing, part number MS447 is the main reference point. Listed voltage is 24. Published fitment references include CATERPILLAR 3114, CATERPILLAR 3114 1991, CATERPILLAR 446D. These details should still be checked against the original unit before ordering.

What fitment references are listed?

The listed fitment references include Caterpillar 3114, 446D, 910E, 924F, E110B, E120B, IT12B, IT14B, IT24B, and IT24F. For this listing, part number MS447 is the main reference point. Listed voltage is 24. Published fitment references include CATERPILLAR 3114, CATERPILLAR 3114 1991, CATERPILLAR 446D. These details should still be checked against the original unit before ordering.