Bosch Starter Motor 12V 9 Tooth CW 3KW Part No. 1986S10072

The Bosch Starter Motor 12V 9 Tooth CW is a rotating electrical replacement part with a 3kW power rating, 12V operating voltage and clockwise rotation. It is identified by Bosch part number 1986S10072 and is supplied as a starter motor each.

Key physical details for checking suitability include a 3 hole starter mount type, 110mm flange diameter, 146mm mount centres A, 103mm mount centres B and 103mm mount centres C. The unit has a 35mm pinion diameter, 28mm pinion at rest, 9 teeth, 12mm mount hole diameter and an overall length of 340mm.

This starter motor is listed as dry clutch compatible and carries a 12 month warranty. Bosch describes it as built to withstand harsh environments, which is a useful consideration where the original starter has been working in demanding conditions or where under-bonnet exposure is a factor.

Key Features

• Bosch starter motor
• 12V operation
• 3kW power rating
• 9 tooth pinion
• Clockwise rotation
• 3 hole mount type

Specifications

• Part No.: 1986S10072
• Brand: Bosch
• Product type: Starter motor
• Voltage: 12V
• Power rating: 3kW
• Rotation: CW
• Number of teeth: 9
• Starter mount type: 3 hole

Application and Buying Notes

Starter motor replacement should be checked carefully against the original unit, because the important match points here are not just 12V and Bosch part number 1986S10072. The 9 tooth pinion, clockwise rotation, 3 hole mount and 110mm flange diameter all need to line up with the existing starter and the engine application before purchase.

The listed measurements are the most useful comparison points when confirming a direct swap. Check the 146mm mount centres A, 103mm mount centres B and C, 12mm mount hole diameter and 340mm overall length against the removed starter. Even small differences in flange size, hole spacing or pinion dimensions can mean the part will not bolt up or mesh correctly.

Because no vehicle applications are supplied here, the safest approach is to confirm the part number first, then compare the physical specifications on the vehicle. If the original starter has a matching Bosch number or the same mounting and pinion details, that is the strongest indication of compatibility. If there is any mismatch in rotation, tooth count or mount pattern, do not assume it will fit.

The 3kW rating and dry clutch designation are useful technical points, but they should be checked alongside the mounting dimensions rather than treated as a stand-alone fitment guide. This starter is sold each and comes with a 12 month warranty, so keeping the original unit for comparison until the new one is confirmed is a practical way to avoid installation issues.

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 1986S10072 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 146mm, Mount Centres C 103mm, Number of Teeth 9, Pinion at Rest 28mm, Power Rating 3kW, Voltage 12, Wet / Dry Clutch Dry.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. 1986S10072, Brand BOSCH, Description Bosch Starter Motor 12V 9Th CW, Flange Diameter 110mm, Mount Centres B 103mm, Mount Hole Diameter 12, Overall Length 340mm, Pinion Diameter 35mm, Rotation CW.

Bosch Starter Motor 12V 9Th CW. Part number 1986S10072 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 1986S10072, 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: Confirm compatibility by matching Bosch part number 1986S10072 and checking the 12V, 9 tooth, clockwise, 3 hole mounting details against the original starter motor before ordering.

FAQ

What is the Bosch part number for this starter motor?

The part number is 1986S10072. For this listing, part number 1986S10072 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What voltage does this starter motor use?

It is a 12V starter motor. For this listing, part number 1986S10072 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 starter motor has a 9 tooth pinion. For this listing, part number 1986S10072 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What direction of rotation is listed?

The listed rotation is clockwise, shown as CW. For this listing, part number 1986S10072 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

What are the key mounting measurements?

The key mounting details are a 3 hole starter mount type, 110mm flange diameter, 146mm mount centres A, 103mm mount centres B, 103mm mount centres C, and 12mm mount hole diameter. For this listing, part number 1986S10072 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.

Does it have a warranty?

Yes, the warranty listed is 12 months. For this listing, part number 1986S10072 is the main reference point. Listed voltage is 12. These details should still be checked against the original unit before ordering.