OEX Starter Motor 12V 10TH CCW Bosch Style BXS4020

The OEX BXS4020 is a 12V starter motor in Bosch style, built as a new unit with a 10 tooth pinion and counter-clockwise rotation. It is listed with a 1.7kW power rating, a 2 hole starter mount, and a 76mm flange diameter, so it is intended for applications that match those physical and electrical details exactly.

Key dimensions for checking against the vehicle are a 243mm overall length, 119mm mount centres, 11mm mount hole diameter, 28mm pinion diameter, and 42mm pinion at rest. The unit weighs 3.76kg and is supplied as each, under part number BXS4020.

This starter is identified as suitable for Bosch units and carries a note that it will not interchange with BXS0181. That makes the part number, mounting pattern, tooth count, rotation direction, and dimensions especially important when matching it to a vehicle or replacing an existing starter motor.

Key Features

• 12V starter motor
• Bosch style unit
• 10 tooth pinion
• Counter-clockwise rotation
• 2 hole starter mount
• New unit, not remanufactured

Specifications

• Brand: OEX
• Product type: Starter motor
• Part No.: BXS4020
• Voltage: 12V
• Rotation: CCW
• Number of teeth: 10
• Power rating: 1.7kW
• Starter mount type: 2 hole

Fitment guidance

• Fitment is listed against selected Audi, Skoda and Volkswagen applications.
• Supported application groups include Audi A1, A3, A4, A4 Allroad, A5 and TT.
• Supported application groups include Skoda Octavia, Superb and Yeti.
• Supported application groups include Volkswagen Caddy, CC, Eos, Golf, Jetta, Passat, Scirocco and Tiguan.
• Vehicle year listings shown in the supplied fitment data include Audi A1 2011 to 2015, Skoda Octavia 2004 to 2013, and Volkswagen Caddy 2004 to 2014.
• Confirm the exact vehicle application against the part number BXS4020 before ordering.

Application and Buying Notes

When replacing a starter motor, the safest check is the part number and the physical match-up. For this unit, BXS4020 is a 12V Bosch style starter with 10 teeth, CCW rotation, a 2 hole mount, 119mm mount centres, and an 11mm mount hole diameter. Those details need to match the existing unit and the vehicle application before fitting.

The listed dimensions matter because starter motors can look similar while differing in mount spacing, flange size, pinion diameter, or rotation. Here the important measurements are a 76mm flange diameter, 243mm overall length, 28mm pinion diameter, and 42mm pinion at rest. If any of those differ from the removed starter, re-check the application before purchase.

This is a new OEX starter motor with a 1.7kW rating and a dry clutch arrangement. The warranty is listed as 3 years for passenger use and 1 year for commercial use, which is useful context when selecting a replacement for the intended duty cycle. As always, the vehicle’s original starter details should be compared carefully, especially where Bosch-style components and part number cross-checking are involved.

The supplied fitment information points to selected Audi, Skoda and Volkswagen applications, but the note that BXS4020 will not interchange with BXS0181 means it should not be treated as a simple visual substitute. Confirm the existing starter’s tooth count, rotation, mounting pattern and dimensions before ordering, particularly if the vehicle has had previous repairs or non-genuine parts fitted.

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 BXS4020 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 3yr Passenger 1yr Commercial, Mount Centres A 119mm, Number of Teeth 10, Pinion at Rest 42mm, Power Rating 1.7kW, Suits Unit Make Bosch, Note Will NOT Interchange with BXS0181, Starter Mount Type 2 Hole.

Additional published details for cross-checking include Weight 3.76kg, Product Group 1 ROTATING ELECTRICAL, Part No. BXS4020, Brand OEX, Description OEX Starter Motor 12V 10Th CCW Bosch Style, Flange Diameter 76mm, Mount Hole Diameter 11, Overall Length 243mm, Pinion Diameter 28mm, Rotation CCW.

OEX Starter Motor 12V 10Th CCW Bosch Style. Part number BXS4020 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 BXS4020, 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 matching part number BXS4020, 12V specification, 10 tooth count, CCW rotation, 2 hole mount, and the listed dimensions against the existing starter and vehicle application details before purchase.

FAQ

What type of starter motor is this?

It is an OEX starter motor, part number BXS4020, specified as a 12V Bosch style unit with 10 teeth and CCW rotation.

Is this starter motor new or remanufactured?

It is listed as new, not remanufactured.

What warranty is listed for this part?

The listed warranty is 3 years for passenger use and 1 year for commercial use.

What are the main mounting dimensions?

The listed mount centres are 119mm, the starter mount type is 2 hole, the mount hole diameter is 11mm, and the flange diameter is 76mm.

Which vehicle groups are listed in the fitment data?

The supplied fitment data points to selected Audi, Skoda and Volkswagen applications, including Audi A1, A3, A4, A4 Allroad, A5 and TT; Skoda Octavia, Superb and Yeti; and Volkswagen Caddy, CC, Eos, Golf, Jetta, Passat, Scirocco and Tiguan.

Can it be interchanged with BXS0181?

No. The listing specifically notes that it will not interchange with BXS0181.