Bosch Starter Motor 12V 9 Tooth CW 2.5KW Part No. 1986S00740

The Bosch Starter Motor 12V 9Th CW, part no. 1986S00740, is a new rotating electrical unit supplied as each. It is rated at 12 volts and 2.5kW, with clockwise rotation and a 9 tooth pinion, making the key identifiers easy to confirm before purchase.

Physical dimensions matter when replacing a starter motor, and this unit lists an overall length of 245mm, a flange diameter of 82mm, a 34mm pinion diameter, and a 21mm pinion at rest. It also uses a 2 hole starter mount with 2 mounting bores and a 105mm centre-to-centre mount measurement.

A 12.5mm mount hole diameter is specified, and the unit is manufactured in China. Bosch lists this starter motor as built to withstand the harshest environments, which is a practical note for buyers who are comparing a replacement against an existing unit and need the dimensions and configuration to line up properly.

Key Features

• 12V starter motor
• 2.5kW power rating
• Clockwise rotation
• 9 tooth pinion
• 2 hole starter mount
• New unit, not remanufactured

Specifications

• Part No.: 1986S00740
• Brand: Bosch
• Product type: Starter Motor
• Voltage: 12V
• Power rating: 2.5kW
• Rotation: CW
• Number of teeth: 9
• Starter mount type: 2 hole

Application and Buying Notes

Before ordering, match the part number 1986S00740, the Bosch brand, and the starter configuration against the unit being replaced. The important physical checks here are 12V voltage, clockwise rotation, 9 tooth pinion, 2 hole mount design, 82mm flange diameter, and the 245mm overall length.

Starter motors can look similar while differing in mounting and drive details, so the 34mm pinion diameter, 21mm pinion at rest measurement, 12.5mm mount hole diameter, and 105mm mount centre-to-centre dimension are worth checking carefully. These measurements help confirm whether the unit will physically match the application already fitted to the vehicle.

This is a new starter motor, not a remanufactured unit, and it carries a 12 month warranty. The listed 2.5kW rating is another useful comparison point if you are replacing like for like, but it should be checked alongside the mounting pattern and rotation direction rather than used on its own.

If you are cross-checking against a removed starter, compare all visible identifiers on the old unit as well as the mounting layout and pinion details. When in doubt, the safest approach is to verify by part number and the application details already in the vehicle before committing to the purchase.

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 1986S00740 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 12 Months, Mount Hole Diameter 12.5, Overall Length 245mm, Pinion Diameter 34mm, Rotation CW, Voltage 12, New / Reman. New, Number of mounting bores 2.

Additional published details for cross-checking include Packaging width 18, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986S00740, Brand BOSCH, Description Bosch Starter Motor 12V 9Th CW, Flange Diameter 82mm, Number of Teeth 9, Pinion at Rest 21mm, Power Rating 2.5kW.

Bosch Starter Motor 12V 9Th CW. Part number 1986S00740 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 1986S00740, 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.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

Compatibility note: Confirm compatibility using part number 1986S00740, the Bosch application details, and the listed measurements and mounting configuration before ordering.

FAQ

Is this starter motor new or remanufactured?

It is listed as new, not remanufactured. For this listing, part number 1986S00740 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What is the voltage and power rating?

This starter motor is 12V and rated at 2.5kW. For this listing, part number 1986S00740 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What rotation does it use?

The rotation is clockwise (CW). For this listing, part number 1986S00740 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

How many teeth does the pinion have?

The pinion has 9 teeth. For this listing, part number 1986S00740 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What mounting style does it use?

It is a 2 hole starter mount with 2 mounting bores, and a mount centre-to-centre measurement of 105mm is listed. For this listing, part number 1986S00740 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

Does the listing include a warranty?

Yes. The listed warranty is 12 months. For this listing, part number 1986S00740 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.