Bosch Starter Motor 12V 11 Tooth CW Part No. 1986S10081

The Bosch starter motor listed here is a 12V unit with 11 teeth, clockwise rotation, and part number 1986S10081. It is sold as a single starter motor each and carries a 12 month warranty. For a replacement starter, these core details matter because voltage, tooth count, rotation, and mounting pattern all need to match the vehicle application.

This starter motor uses a 2 hole starter mount, with 105mm mount centres, a 13mm mount hole diameter, and an 82mm flange diameter. Overall length is 315mm, pinion diameter is 41mm, and pinion at rest is 21mm. Those dimensions are the practical checks that help separate a correct fit from a near match that may not install properly.

Bosch lists this unit as part of its rotating electrical range, with a dry clutch setup and a stated weight of 12.752kg. It is described as being built to withstand the harshest environments, which is useful to note when the starter is being considered for demanding working conditions or repeated use.

Key Features

• 12V starter motor
• 11 tooth pinion
• Clockwise rotation
• 2 hole starter mount
• Built to withstand harshest environments
• 12 month warranty

Specifications

• Brand: Bosch
• Part No.: 1986S10081
• Type: Starter motor
• Voltage: 12V
• Number of teeth: 11
• Rotation: CW
• Starter mount type: 2 hole
• Mount centres A: 105mm

Application and Buying Notes

When comparing this starter motor to the one being removed, the most important checkpoints are part number 1986S10081, 12V operation, 11 teeth, and clockwise rotation. If any of those do not line up with the existing unit or the vehicle specification, the starter may not be suitable. Mounting details also matter, especially the 2 hole mount, 105mm mount centres, and 13mm mount hole diameter.

The physical dimensions are equally important on a starter motor. This Bosch unit measures 315mm overall length with an 82mm flange diameter and a 41mm pinion diameter. The pinion at rest is 21mm. These figures help confirm whether the unit will sit and engage correctly in the available space and with the ring gear arrangement already in the vehicle.

The dry clutch designation should also be checked against the application already in service. Starter motors are often replaced because of wear, heat, or repeated cranking, so it is sensible to compare the old unit carefully before ordering. If the original starter has a readable label, matching the Bosch part number is the cleanest way to verify the replacement.

Weight can be a useful secondary check during comparison, and this unit is listed at 12.752kg. That does not confirm fitment by itself, but it can help identify whether the starter on hand is the same style and construction as the one being replaced. Where there is any doubt, confirm against the removed unit and the vehicle application before 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 1986S10081 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 Centres A 105mm, Number of Teeth 11, Pinion at Rest 21mm, Rotation CW, Starter Mount Type 2 Hole, Weight 12.752kg, Product Group 1 ROTATING ELECTRICAL.

Additional published details for cross-checking include Part No. 1986S10081, Brand BOSCH, Description Bosch Starter Motor 12V 11Th CW, Flange Diameter 82mm, Mount Hole Diameter 13, Overall Length 315mm, Pinion Diameter 41mm, Voltage 12, Wet / Dry Clutch Dry.

Bosch Starter Motor 12V 11Th CW. Part number 1986S10081 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 1986S10081, 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.

Compatibility note: Please confirm fitment using the Bosch part number 1986S10081 and the matching application details from the vehicle or removed starter motor before ordering.

FAQ

What is the part number for this Bosch starter motor?

The part number is 1986S10081. For this listing, part number 1986S10081 is the main reference point. Listed voltage is 12. 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 1986S10081 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 11 teeth. For this listing, part number 1986S10081 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What is the rotation direction?

It is clockwise rotation, listed as CW. For this listing, part number 1986S10081 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What type of starter mount does it use?

It uses a 2 hole starter mount with 105mm mount centres and a 13mm mount hole diameter. For this listing, part number 1986S10081 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

Is fitment guaranteed from this listing alone?

No. Fitment should be confirmed against the Bosch part number 1986S10081 and the vehicle or removed starter details, including voltage, tooth count, rotation, and mounting dimensions. For this listing, part number 1986S10081 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.