Mahle Starter Motor 24V 9 Tooth CW MS66

The Mahle MS66 is a new 24V starter motor with clockwise rotation, 9 teeth, and a 4.0kW power rating. It is listed as a Mahle unit and is identified as an Original Equipment part, which makes it a sensible option when the replacement needs to match the existing starter’s core electrical and mounting details.

Key physical measurements to check on the vehicle or removed unit include 127mm mount centres A, 90mm mount centres B and C, a 3-hole starter mount type, 3 mounting bores, an 89mm flange diameter, and 11mm mounting hole diameter. The starter also has a 320mm overall length, a 34mm pinion diameter, and a 28mm pinion at rest.

This starter is specified with a 24V supply, reduction gear transmission type, and a flywheel depth of 31.0. The part number is MS66 and the OEM number listed is 11131770, so matching those identifiers against the original unit is the most reliable way to confirm you are ordering the correct replacement.

Key Features

• 24V starter motor
• Clockwise rotation (CW)
• 9-tooth pinion
• 4.0kW power rating
• Original Equipment part
• New unit

Specifications

• Brand: Mahle
• Part No.: MS66
• OEM Number: 11131770
• Voltage: 24V
• Rotation: CW
• Number of Teeth: 9
• Power Rating: 4.0kW
• New / Reman.: New

Verified applications

• ATLAS COPCO LC
• ATLAS COPCO LC 1980 to 1990
• LIEBHERR A314
• LIEBHERR A314 2008
• LIEBHERR A316
• LIEBHERR A316 2008 to 2011
• LIEBHERR L506
• LIEBHERR L506 2013

Application and Buying Notes

When replacing a starter motor, the most important checks are voltage, rotation, tooth count, and mounting pattern. For this Mahle MS66, those points are 24V, clockwise rotation, 9 teeth, and a 3-hole mount with 127mm mount centres A and 90mm mount centres B and C. If any of those differ from the unit being replaced, it should be treated as a mismatch until verified.

Physical dimensions matter just as much as electrical specification. The listed 89mm flange diameter, 11mm mount hole diameter, 320mm overall length, 34mm pinion diameter, and 28mm pinion at rest all need to suit the application space and flywheel engagement. The stated flywheel depth is 31.0, so the starter needs to match that setup before installation.

This is a new starter motor with reduction gear transmission and a 4.0kW rating. Those details help confirm it is the right style of replacement, but the safest buying check remains the part number MS66 and OEM number 11131770. If the old starter is available, compare the tag, mounting face, tooth count, and overall layout before fitting the new unit.

The fitment list covers selected ATLAS COPCO, LIEBHERR, NORMET, and WIRTGEN applications, including model and year references in some cases. Because starter variants can differ within the same machine family, confirm the exact application details against the machine plate, old starter, or parts record rather than relying on the brand name alone.

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 MS66 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 9, Pinion at Rest 28mm, Power Rating 4.0kW, Suits Unit Make Mahle, Item Type Starter Motor.

Additional published details for cross-checking include Starter Mount Type 3 Hole, Transmission Type with reduction gear, Number of mounting bores 3, For flywheel depth 31.0, Packaging length 38.2, Packaging height 14.50, Product Group 2 STARTER MOTORS, Part No. MS66, Brand MAHLE.

Mahle Starter Motor 24V 9Th CW. Part number MS66 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 MS66, 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 ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981, ATLAS COPCO LC 1982, LIEBHERR A314, LIEBHERR A314 2008. 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.

Compatibility note: Confirm fitment by matching the part number MS66, OEM number 11131770, 24V rating, clockwise rotation, 9-tooth pinion, and the stated mounting measurements before ordering or fitting.

FAQ

What is the part number for this starter motor?

The listed part number is MS66. For this listing, part number MS66 is the main reference point. Listed voltage is 24. Published fitment references include ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981. These details should still be checked against the original unit before ordering.

What voltage does this starter use?

It is a 24V starter motor. For this listing, part number MS66 is the main reference point. Listed voltage is 24. Published fitment references include ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981. These details should still be checked against the original unit before ordering.

What direction does it rotate?

The rotation is clockwise, shown as CW. For this listing, part number MS66 is the main reference point. Listed voltage is 24. Published fitment references include ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981. These details should still be checked against the original unit before ordering.

How many teeth are on the pinion?

The starter is specified with 9 teeth. For this listing, part number MS66 is the main reference point. Listed voltage is 24. Published fitment references include ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981. 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 MS66 is the main reference point. Listed voltage is 24. Published fitment references include ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981. These details should still be checked against the original unit before ordering.

What warranty is listed?

The listed warranty is One Year. For this listing, part number MS66 is the main reference point. Listed voltage is 24. Published fitment references include ATLAS COPCO LC, ATLAS COPCO LC 1980, ATLAS COPCO LC 1981. These details should still be checked against the original unit before ordering.