Bosch Starter Motor 12V 9 Tooth CW 1986S00720

The Bosch Starter Motor 12V 9 Tooth CW is a new starter motor for rotating electrical applications, supplied under Bosch part number 1986S00720. It is rated at 1.6kW, runs on 12 volts, and is specified with clockwise rotation, so the electrical and direction details can be checked before purchase.

This unit uses a 2 hole starter mount with 2 mounting bores, a 103mm mount centres A measurement, and a 12mm mount hole diameter. Key physical dimensions include an 82mm flange diameter, 275mm overall length, a 29mm pinion diameter, and a 40mm pinion at rest position.

The starter has 9 teeth and is listed as suitable for dry clutch applications. It is a Bosch branded part, manufactured in China, and supplied as each with a 12 month warranty. The stated weight is 4.55kg, which may help when comparing against an existing unit during identification.

Key Features

• 12V starter motor
• 1.6kW power rating
• 9 tooth pinion
• Clockwise rotation
• 2 hole mount type
• New unit

Specifications

• Brand: Bosch
• Part number: 1986S00720
• Product type: Starter motor
• Voltage: 12V
• Power rating: 1.6kW
• Rotation: CW
• Number of teeth: 9
• Starter mount type: 2 hole

Known fitment references

• HATZ 1D42
• HATZ 1D42 1997
• HATZ 1D50
• HATZ 1D50 1997

Application and Buying Notes

Before ordering, compare the Bosch part number 1986S00720 with the starter currently fitted, then check the key physical details: 12V, 1.6kW, 9 tooth pinion, clockwise rotation, and the 2 hole mount pattern. Those points are the most useful identifiers when confirming whether a replacement starter matches your application.

The listed dimensions are important because starter motors can look similar but differ in flange diameter, mount centres, hole size, pinion size, and overall length. For this unit, the critical measurements are 82mm flange diameter, 103mm mount centres A, 12mm mount hole diameter, 29mm pinion diameter, and 275mm overall length.

This starter is described as a dry clutch unit, so that detail should also be matched to the intended application. If the existing starter is damaged or missing, use the engine model, mounting arrangement, tooth count, rotation direction, and part number together rather than relying on appearance alone.

The fitment references provided point to HATZ 1D42 and HATZ 1D50 applications, including 1997 listings. Even where an engine family appears in the fitment notes, the final check should still be made against the engine identification, mounting points, and starter dimensions on the vehicle or machine.

Because starter motors are chosen by a combination of electrical rating and physical layout, it is worth confirming the 12V system voltage and the 1.6kW rating before fitting. A mismatch in voltage, tooth count, or rotation can prevent correct operation, even if the unit looks close at first glance.

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 1986S00720 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 103mm, Number of Teeth 9, Pinion at Rest 40mm, Power Rating 1.6kW, Voltage 12, Starter Mount Type 2 Hole, Number of mounting bores 2.

Additional published details for cross-checking include Packaging width 18, Manufactured in China, Product Group 2 STARTER MOTORS, Part No. 1986S00720, Brand BOSCH, Description Bosch Starter Motor 12V 9Th CW, Flange Diameter 82mm, Mount Hole Diameter 12, Overall Length 275mm.

Bosch Starter Motor 12V 9Th CW. Part number 1986S00720 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 1986S00720, 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.

Compatibility note: Confirm fitment by checking Bosch part number 1986S00720, the 12V 1.6kW specification, 9 tooth CW rotation, 2 hole mounting pattern, and the stated HATZ application references before ordering.

FAQ

What is the part number for this starter motor?

The Bosch part number is 1986S00720. For this listing, part number 1986S00720 is the main reference point. Listed voltage is 12. Published fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50. 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 1986S00720 is the main reference point. Listed voltage is 12. Published fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50. 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 1986S00720 is the main reference point. Listed voltage is 12. Published fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50. 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 1986S00720 is the main reference point. Listed voltage is 12. Published fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50. These details should still be checked against the original unit before ordering.

What mount type does it use?

It uses a 2 hole starter mount with 2 mounting bores. For this listing, part number 1986S00720 is the main reference point. Listed voltage is 12. Published fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50. These details should still be checked against the original unit before ordering.

What fitment references are supplied?

The provided fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50, and HATZ 1D50 1997. For this listing, part number 1986S00720 is the main reference point. Listed voltage is 12. Published fitment references include HATZ 1D42, HATZ 1D42 1997, HATZ 1D50. These details should still be checked against the original unit before ordering.