Bosch Starter Motor 12V 11TH CW Part No. 1986S10057

The Bosch Starter Motor 12V 11th CW is a light commercial starter motor identified by part number 1986S10057. It is listed as a Bosch unit with a 12V electrical setup, 11th configuration, clockwise rotation, and three mounting bores, which are all important checks when matching a replacement starter motor.

This starter motor sits in the rotating electrical group and is supplied as each. The stated warranty is 12 months, and the unit is manufactured in China. For buyers working from a part number, 1986S10057 is the most reliable identifier to compare against the existing starter and the vehicle application details before ordering.

The listed features focus on durability and OE-style fit and performance, with Bosch describing it as built to withstand harsh environments and designed to meet OE starter expectations. Those are useful points for buyers needing a direct replacement in a working vehicle, but the key compatibility checks remain the voltage, rotation, mounting bore count, and part number.

Packaging dimensions are 39 x 23 x 16, which may help when planning shipping, storage, or workshop handling. For a starter motor replacement, the practical buying step is to confirm the existing unit matches the same 12V, 11th CW specification and the same part number before fitting.

Key Features

• 12V starter motor
• 11th CW configuration
• Three mounting bores
• Bosch branded rotating electrical part
• Built for harsh environments
• OE-style fit and performance

Specifications

• Brand: Bosch
• Part No.: 1986S10057
• Product type: Starter Motor Light Comm
• Electrical rating: 12V
• Rotation: CW
• Configuration: 11th
• Number of mounting bores: 3
• Warranty: 12 months

Fitment information

• No fitment applications are confirmed here beyond the supplied John Deere series references.
• Fitment data provided points to John Deere Series 6010 applications across model years 1997 to 2003.
• Use the part number 1986S10057 and the existing starter’s physical details to verify the match before purchase.

Application and Buying Notes

Starter motors need to match more than just the brand name. For this Bosch unit, the most important checks are the 12V rating, clockwise rotation, 11th configuration, and the three mounting bores. If any of those details differ from the unit being replaced, the part should be checked carefully before ordering.

The part number 1986S10057 is the strongest reference point for confirming compatibility. If the vehicle has a Bosch starter already fitted, compare the label, mounting pattern, and electrical setup against this listing rather than relying on appearance alone. Starter motors can look similar while still differing in rotation or mounting design.

Packaging size is listed as 39 x 23 x 16, which may assist with workshop receiving and freight planning. The unit is sold each and carries a 12 months warranty, so it is sensible to retain the packaging and invoice details until the part has been installed and tested in the vehicle.

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 1986S10057 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 LIGHT COMM, Unit of Measure EACH, Warranty 12 Months, Packaging length 39, Packaging height 23, Product Group 2 STARTER MOTORS, Part No. 1986S10057, Brand BOSCH, Description Bosch Starter Motor 12V 11Th CW.

Bosch Starter Motor 12V 11Th CW. Part number 1986S10057 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986S10057, 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 light comm in workshop, fleet, trade, agricultural, or construction service, the listed electrical specification should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998, JOHN DEERE SERIES 6010 1999. 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.

The listed warranty is 12 Months. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Always confirm compatibility by checking part number 1986S10057, the 12V CW 11th specification, and the three mounting bores against the existing starter and vehicle application details before ordering.

FAQ

What is the part number for this Bosch starter motor?

The part number is 1986S10057. For this listing, part number 1986S10057 is the main reference point. Published fitment references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998. These details should still be checked against the original unit before ordering.

Is this a 12V starter motor?

Yes. The listed electrical rating is 12V. For this listing, part number 1986S10057 is the main reference point. Published fitment references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998. These details should still be checked against the original unit before ordering.

What does CW mean on this starter motor?

CW indicates clockwise rotation. For this listing, part number 1986S10057 is the main reference point. Published fitment references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998. These details should still be checked against the original unit before ordering.

How many mounting bores does this starter motor have?

It has 3 mounting bores. For this listing, part number 1986S10057 is the main reference point. Published fitment references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998. These details should still be checked against the original unit before ordering.

What warranty is listed for this part?

The listed warranty is 12 months. For this listing, part number 1986S10057 is the main reference point. Published fitment references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998. These details should still be checked against the original unit before ordering.

Which applications are mentioned in the supplied fitment data?

The supplied fitment references John Deere Series 6010 applications, with sample model years from 1997 to 2003. For this listing, part number 1986S10057 is the main reference point. Published fitment references include JOHN DEERE SERIES 6010, JOHN DEERE SERIES 6010 1997, JOHN DEERE SERIES 6010 1998. These details should still be checked against the original unit before ordering.