Bosch Starter Motor 12V 9 Tooth CW 1.1KW Part No. 1986S00674

This Bosch starter motor is a new 12V unit with a 1.1kW power rating, 9 teeth, clockwise rotation (CW), and part number 1986S00674. It is listed with a 3-hole starter mount, 76.2mm flange diameter, and 105mm / 74mm / 74mm mount centre measurements, so those physical points are worth checking against the vehicle before ordering.

The unit is designed to meet OE starter fit and performance requirements and is described as suitable for harsh environments. It has a 29mm pinion diameter, 21mm pinion at rest, 10mm mounting bore diameter, and an overall length of 233mm, which gives a clear set of dimensions to compare during diagnosis or replacement work.

This starter motor is supplied as each, weighs 3.240kg, and is manufactured in Hungary. A 12-month warranty is listed. For buyers matching a replacement starter, the part number, rotation direction, tooth count, voltage, and mount style are the main checks to confirm before fitting.

Key Features

• New Bosch starter motor
• 12V electrical system
• 1.1kW power rating
• 9-tooth pinion
• Clockwise rotation (CW)
• 3-hole starter mount

Specifications

• Part No.: 1986S00674
• Brand: Bosch
• Product type: Starter motor
• Voltage: 12V
• Power rating: 1.1kW
• Rotation: CW
• Number of teeth: 9
• Starter mount type: 3 hole

Fitment details supplied

• BMW 3 series applications are listed, including 1987 through 1997 models in the provided fitment data.
• BMW 5 series applications are listed in the provided fitment data.
• BMW X3 applications are listed in the provided fitment data.
• BMW Z3 applications are listed in the provided fitment data.
• BMW Z4 applications are listed in the provided fitment data.

Application and Buying Notes

Before ordering, match the starter against the existing unit using the part number 1986S00674, the 12V rating, the 9-tooth pinion, and the clockwise rotation. Those items are the quickest way to rule out a mismatch when replacing a starter motor that may look similar externally but differ in tooth count, direction, or mounting pattern.

The physical dimensions matter as much as the electrical specification. Check the 3-hole mount, the 105mm and 74mm mount centre measurements, the 76.2mm flange diameter, the 10mm mounting bore diameter, and the 233mm overall length. If the old starter has different mounting points or casing dimensions, it may not align correctly even if the connector and voltage appear similar.

This unit is rated at 1.1kW, which is the useful figure to compare with the vehicle’s original starter requirement. The pinion diameter of 29mm and pinion at rest measurement of 21mm are also practical checks for install clearance and alignment. If the vehicle has had previous repairs, a swapped flywheel, or non-standard parts fitted, verifying these measurements becomes even more important.

For BMW applications listed in the fitment data, use the actual vehicle details and the removed starter as your reference rather than relying on model name alone. Matching by part number and application details is the safest approach when selecting a starter motor, particularly where multiple starter variants can exist across the same model range.

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 1986S00674 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, Mount Centres C 74mm, Number of Teeth 9, Pinion at Rest 21mm, Power Rating 1.1kW, Voltage 12, Starter Mount Type 3 Hole.

Additional published details for cross-checking include Number of mounting bores 3, Packaging width 18, Manufactured in Hungary, Product Group 2 STARTER MOTORS, Part No. 1986S00674, Brand BOSCH, Description Bosch Starter Motor 12V 9Th CW, Flange Diameter 76.2mm, Mount Centres B 74mm.

Bosch Starter Motor 12V 9Th CW. Part number 1986S00674 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 1986S00674, 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 BMW 3, BMW 3 1987, BMW 3 1988, BMW 3 1989. 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: Confirm fitment using the vehicle application details and part number 1986S00674 before purchase. Check the 12V, 9-tooth, clockwise, 3-hole starter configuration against the existing unit and do not rely on model name alone.

FAQ

Is this a new or remanufactured starter motor?

This starter motor is listed as new. For this listing, part number 1986S00674 is the main reference point. Listed voltage is 12. Published fitment references include BMW 3, BMW 3 1987, BMW 3 1988. 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 listed is 1986S00674. For this listing, part number 1986S00674 is the main reference point. Listed voltage is 12. Published fitment references include BMW 3, BMW 3 1987, BMW 3 1988. These details should still be checked against the original unit before ordering.

What voltage and power rating does it have?

It is a 12V starter motor with a 1.1kW power rating. For this listing, part number 1986S00674 is the main reference point. Listed voltage is 12. Published fitment references include BMW 3, BMW 3 1987, BMW 3 1988. 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 1986S00674 is the main reference point. Listed voltage is 12. Published fitment references include BMW 3, BMW 3 1987, BMW 3 1988. These details should still be checked against the original unit before ordering.

What rotation direction does it use?

It is clockwise rotation (CW). For this listing, part number 1986S00674 is the main reference point. Listed voltage is 12. Published fitment references include BMW 3, BMW 3 1987, BMW 3 1988. These details should still be checked against the original unit before ordering.

Does fitment include BMW applications?

Yes. BMW 3, BMW 5, BMW X3, BMW Z3, and BMW Z4 applications are listed in the supplied fitment data. Use the part number and the vehicle application details to confirm the correct match before ordering. For this listing, part number 1986S00674 is the main reference point. Listed voltage is 12. Published fitment references include BMW 3, BMW 3 1987, BMW 3 1988. These details should still be checked against the original unit before ordering.