Bosch Starter Motor 12V 10 Tooth CW 2-HOLE – Part No. 1986S00677

Bosch starter motor, 12V, 10 tooth, clockwise rotation, with a 2-hole starter mount and 2 mounting bores. The pinion diameter is 25mm, and the unit is listed as suitable for a dry clutch application. Part No. 1986S00677 is supplied as each.

This starter motor is described as being designed in fit and performance to meet OE starters, with premium starting performance and construction intended to withstand harsh environments. Those points matter on a vehicle starter, where pinion size, tooth count, rotation direction, and mounting layout must match the existing unit before purchase.

It carries a 12 month warranty and is manufactured in China. If you are replacing a starter on a Mercedes-Benz application, the fitment list supplied includes C-Class, E-Class, S-Class, SL and SLK entries, but the exact application still needs to be checked against the vehicle details and the part number before ordering.

Key Features

• Bosch starter motor for 12V systems
• 10 tooth pinion with clockwise rotation
• 2-hole starter mount with 2 mounting bores
• 25mm pinion diameter
• Suitable for dry clutch applications
• Designed to meet OE starter fit and performance

Specifications

• Brand: Bosch
• Product type: Starter motor
• Part No.: 1986S00677
• Voltage: 12V
• Number of teeth: 10
• Rotation: CW
• Starter mount type: 2 hole
• Number of mounting bores: 2

Fitment guidance

• Mercedes-Benz C-Class
• Mercedes-Benz E-Class
• Mercedes-Benz S-Class
• Mercedes-Benz SL
• Mercedes-Benz SLK

Application and Buying Notes

Starter motor fitment depends on more than just the vehicle make. For this Bosch unit, the key identifiers to check are 12V, 10 teeth, clockwise rotation, 2-hole mount, 2 mounting bores, and 25mm pinion diameter. Matching those details to the original starter is the safest way to avoid ordering the wrong part.

The supplied fitment reference points to Mercedes-Benz applications, including C-Class, E-Class, S-Class, SL and SLK entries. Even so, those model families cover multiple engine and production variations, so the part number 1986S00677 and the physical specifications should be confirmed against the vehicle before fitting.

If you are comparing the old starter, check the rotation direction, mounting pattern, and pinion size first. A 10 tooth starter with a different rotation or mount style will not suit every application, even where the vehicle family appears similar.

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 1986S00677 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, Pinion Diameter 25mm, Voltage 12, Wet / Dry Clutch Dry, Packaging length 32.5, Packaging height 13.9, Product Group 2 STARTER MOTORS.

Additional published details for cross-checking include Part No. 1986S00677, Brand BOSCH, Description Bosch Starter Motor 12V 10Th CW, Number of Teeth 10, Rotation CW, Starter Mount Type 2 Hole, Number of mounting bores 2, Packaging width 18, Manufactured in China, Product Group 1 ROTATING ELECTRICAL.

Bosch Starter Motor 12V 10Th CW. Part number 1986S00677 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 1986S00677, 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 MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008, MERCEDES-BENZ C-CLASS 2009. 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: Confirm compatibility by checking Part No. 1986S00677, 12V voltage, 10 tooth count, clockwise rotation, 2-hole mount, 2 mounting bores, 25mm pinion diameter, and the vehicle application details before ordering. Use the supplied fitment reference as a guide only, not a substitute for vehicle verification.

FAQ

What is the part number for this Bosch starter motor?

The part number supplied is 1986S00677. For this listing, part number 1986S00677 is the main reference point. Listed voltage is 12. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008. These details should still be checked against the original unit before ordering.

What voltage is this starter motor?

It is a 12V starter motor. For this listing, part number 1986S00677 is the main reference point. Listed voltage is 12. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008. 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 1986S00677 is the main reference point. Listed voltage is 12. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008. These details should still be checked against the original unit before ordering.

What rotation direction does it use?

It is clockwise rotation, listed as CW. For this listing, part number 1986S00677 is the main reference point. Listed voltage is 12. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008. These details should still be checked against the original unit before ordering.

What mounting style does it have?

It has a 2-hole starter mount and 2 mounting bores. For this listing, part number 1986S00677 is the main reference point. Listed voltage is 12. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008. These details should still be checked against the original unit before ordering.

Which vehicle groups are listed in the fitment reference?

The supplied fitment reference includes Mercedes-Benz C-Class, E-Class, S-Class, SL and SLK entries. Exact suitability still needs to be confirmed against the vehicle and part number. For this listing, part number 1986S00677 is the main reference point. Listed voltage is 12. Published fitment references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2007, MERCEDES-BENZ C-CLASS 2008. These details should still be checked against the original unit before ordering.