Bosch Starter Motor 12V 1.1KW 9 Tooth CW Part No. 1986S00690

The Bosch Starter Motor 12V 9Th CW, part no. 1986S00690, is a 1.1kW rotating electrical unit with clockwise rotation and a 9 tooth pinion. It is a 12V starter motor with a dry clutch arrangement, a 70mm flange diameter, and a 2 hole starter mount type, so the physical layout needs to be checked against the vehicle before purchase.

This starter uses a 28mm pinion diameter, a 26.4mm pinion at rest measurement, and M10 mount holes. Those dimensions matter when matching the unit to the existing starter and bellhousing arrangement, especially where clearance, bolt pattern, or pinion engagement must line up correctly.

It is listed as being designed in fit and performance to meet OE starters, with premium starting performance and construction intended to withstand harsh environments. Manufactured in Hungary, it is supplied as each unit and carries a 12 month warranty.

Key Features

• Bosch starter motor
• 12V system
• 1.1kW power rating
• 9 tooth pinion
• Clockwise rotation
• 2 hole starter mount

Specifications

• Part No.: 1986S00690
• Voltage: 12V
• Power Rating: 1.1kW
• Rotation: CW
• Number of Teeth: 9
• Starter Mount Type: 2 Hole
• Number of mounting bores: 2
• Mount Hole Diameter: M10

Fitment guidance

• Fitment data is listed for Mercedes-Benz C-Class, CLC-Class, CLK, E-Class and SLK applications, plus 5-T 2008 to 2011.
• The supplied fitment range includes Mercedes-Benz C-Class model years from 2002 through 2012.
• Confirm the starter match against the existing part number, mounting style, tooth count, rotation and measurements before ordering.

Application and Buying Notes

When comparing this starter motor to the unit already on the vehicle, the key checks are the part number 1986S00690, the 12V rating, the 1.1kW output, and the 9 tooth CW configuration. Starter motors can look similar from the outside, but the tooth count, rotation direction, flange diameter, and mount hole pattern all need to line up for a proper fit.

The physical measurements are just as important as the electrical specification. This unit has a 70mm flange diameter, M10 mount holes, a 28mm pinion diameter, and a pinion at rest measurement of 26.4mm. If the existing starter differs in any of these areas, fitment should be checked carefully before installation.

This is a dry clutch starter motor with 2 mounting bores, supplied as each and covered by a 12 month warranty. For buyers matching a replacement, the safest approach is to compare the vehicle application, the existing starter label or casting marks, and the listed dimensions rather than relying on appearance alone.

Where fitment is being checked for Mercedes-Benz applications, the supplied data points to C-Class, CLC-Class, CLK, E-Class and SLK coverage, along with 5-T vehicles from 2008 to 2011. Because model ranges can vary by engine and build details, use the vehicle details and the starter’s measurements together to confirm suitability.

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 1986S00690 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 M10, Pinion at Rest 26.4mm, Power Rating 1.1kW, Voltage 12, Wet / Dry Clutch Dry, Packaging length 28.8, Packaging height 12.

Additional published details for cross-checking include Weight 3.000kg, Product Group 1 ROTATING ELECTRICAL, Part No. 1986S00690, Brand BOSCH, Description Bosch Starter Motor 12V 9Th CW, Flange Diameter 70mm, Number of Teeth 9, Pinion Diameter 28mm, Rotation CW, Starter Mount Type 2 Hole.

Bosch Starter Motor 12V 9Th CW. Part number 1986S00690 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 1986S00690, 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 5-T 2008, 5-T 2009, 5-T 2010, 5-T 2011, MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2002. 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 12 Months. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm fitment using part number 1986S00690, the 12V 1.1kW CW specification, the 9 tooth pinion, and the listed mounting and dimension details before ordering.

FAQ

What part number should I match for this starter motor?

The listed part number is 1986S00690. Matching the part number is one of the most reliable ways to confirm a replacement starter motor.

What are the main electrical specifications?

This starter motor is 12V with a 1.1kW power rating. It is supplied as a starter motor for rotating electrical applications.

What rotation and tooth count does it use?

It has clockwise rotation and a 9 tooth pinion. Both details should be checked against the existing unit before fitting.

What mounting details are listed?

The starter has a 2 hole mount type, 2 mounting bores, M10 mount hole diameter, and a 70mm flange diameter.

Which vehicle applications are shown in the supplied fitment data?

The fitment data includes Mercedes-Benz C-Class, CLC-Class, CLK, E-Class and SLK applications, plus 5-T vehicles from 2008 to 2011.

What warranty is supplied with this starter motor?

A 12 month warranty is listed for this Bosch starter motor.