Bosch Starter Motor 12V 9 Tooth CW Part No. 1986S00777

The Bosch Starter Motor 12V 9 Tooth CW is a rotating electrical component supplied as a starter motor, with a right-hand clockwise rotation and 9 teeth. It is identified by part number 1986S00777 and is sold as each unit, which makes it straightforward to match against the existing starter on the vehicle.

This unit is listed with 3 mounting bores and a 12V electrical specification. Those two points matter when checking replacement suitability, because starter fitment depends on both the physical mounting pattern and the electrical setup, not just the general vehicle model.

Bosch describes the unit as being designed in fit and performance to meet OE starters, with premium starting performance and construction intended to withstand harsh environments. The product is manufactured in China and carries a 12 month warranty.

Key Features

• 12V starter motor
• 9 tooth drive gear
• Clockwise rotation (CW)
• 3 mounting bores
• Designed to meet OE fit and performance
• Built for harsh operating conditions

Specifications

• Brand: Bosch
• Part No.: 1986S00777
• Product type: Starter motor
• Voltage: 12V
• Rotation: CW
• Number of teeth: 9
• Number of mounting bores: 3
• Unit of measure: Each

Fitment information

• FIAT Ducato
• FIAT Ducato 2006
• FIAT Ducato 2007
• FIAT Ducato 2008
• FIAT Ducato 2009
• FIAT Ducato 2010
• FIAT Ducato 2011
• FIAT Ducato 2012

Application and Buying Notes

Before ordering, compare the old starter motor against part number 1986S00777, the 12V rating, the clockwise rotation, the 9 tooth drive, and the 3 mounting bores. Starter motors can look similar across different applications, so matching those details is the safest way to avoid a poor fit.

The fitment listing includes FIAT Ducato applications across the 2006 to 2014 model years. If your vehicle is a Ducato from that period, the part number and mounting details should still be checked against the original unit on the vehicle, as changes can occur between variants and build specifications.

A starter motor is one of those parts where electrical rating and mechanical layout both matter. The 12V specification must suit the vehicle system, while the 9 tooth gear and 3-bore mounting pattern need to align with the existing installation. If you are unsure, compare photos, the old unit, or the vehicle identification details before purchase.

The listed dimensions are packaging measurements rather than installed dimensions: 32.5 length, 18 width, and 13.9 height. They are useful for freight and handling expectations, but they should not be used as the only basis for vehicle fitment.

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 1986S00777 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, Rotation CW, Number of mounting bores 3, Packaging width 18, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986S00777, Brand BOSCH.

Additional published details for cross-checking include Description Bosch Starter Motor 12V 9Th CW, Number of Teeth 9, Voltage 12, Packaging length 32.5, Packaging height 13.9, Product Group 2 STARTER MOTORS.

Bosch Starter Motor 12V 9Th CW. Part number 1986S00777 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 1986S00777, 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 FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007, FIAT DUCATO 2008. 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.

Compatibility note: Please confirm fitment using part number 1986S00777, the 12V specification, clockwise rotation, 9 tooth drive, and 3 mounting bores against the original starter motor and vehicle application details before buying.

FAQ

What vehicle applications are listed for this starter motor?

The listed applications are FIAT Ducato models from 2006 through 2014. For this listing, part number 1986S00777 is the main reference point. Listed voltage is 12. Published fitment references include FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007. These details should still be checked against the original unit before ordering.

What is the part number for this Bosch starter motor?

The part number is 1986S00777. For this listing, part number 1986S00777 is the main reference point. Listed voltage is 12. Published fitment references include FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007. These details should still be checked against the original unit before ordering.

Is this a 12V starter motor?

Yes. The voltage specification is 12V. For this listing, part number 1986S00777 is the main reference point. Listed voltage is 12. Published fitment references include FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007. These details should still be checked against the original unit before ordering.

Which way does this starter motor rotate?

It is clockwise rotation, listed as CW. For this listing, part number 1986S00777 is the main reference point. Listed voltage is 12. Published fitment references include FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007. These details should still be checked against the original unit before ordering.

How many teeth does the drive gear have?

The drive gear has 9 teeth. For this listing, part number 1986S00777 is the main reference point. Listed voltage is 12. Published fitment references include FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007. These details should still be checked against the original unit before ordering.

What should I check before ordering?

Check the part number, 12V rating, CW rotation, 9 tooth gear, and 3 mounting bores against the original unit and vehicle application details. For this listing, part number 1986S00777 is the main reference point. Listed voltage is 12. Published fitment references include FIAT DUCATO, FIAT DUCATO 2006, FIAT DUCATO 2007. These details should still be checked against the original unit before ordering.