VW Polo 6R Skoda Fabia 5J Crankshaft Gear Pulley Wheel 1.2 CGPA CGPB 03D103306B

VW Polo 6R Skoda Fabia 5J Crankshaft Gear Pulley Wheel 1.2 CGPA CGPB is an original drivetrain component from the Volkswagen group, designed for use with 1.2 petrol engines. The precisely machined gear profile ensures stable timing drive transmission, which translates into smooth engine operation and correct synchronization of the crankshaft with other engine components. This is a solution for users looking for proven, factory-spec geometry and a perfect fit for specific versions of the VW Polo 6R and Skoda Fabia 5J.

Specifications and technical data

• SKU: 03D103306B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 03D103306B
• Substitutable numbers: 03D103306B, 03D 103 306 B
• Rim width: 5
• Category: Crankshafts

Purpose and role in the timing system

The presented timing gear works in direct connection with the crankshaft, responsible for the proper transmission of torque to other timing system components. Thanks to the maintenance of factory tooth geometry and a correctly selected profile for cooperation with the belt or chain, this component helps maintain stable timing phases in 1.2 engines used in the VW Polo 6R and Skoda Fabia 5J.

A properly selected gear reduces the risk of timing drive slippage, which is particularly important during urban and mixed driving conditions. Using an original component allows you to maintain engine operating parameters in accordance with the manufacturer's specifications.

Construction and fitment for Crankshafts

The element belongs to the Crankshafts category, meaning it is designed for direct cooperation with this assembly. The gear's construction allows for precise seating on the crankshaft journal, ensuring proper centering and stable transmission of dynamic loads during engine operation.

In practice, this translates into:

• a secure connection with the crankshaft without excessive play that could strain the timing drive,
• maintaining correct synchronization of piston and valve operation,
• reducing the risk of engine malfunction resulting from incorrect timing settings.

Benefits of using an original Volkswagen component

The timing gear from the Volkswagen line ensures that factory manufacturing tolerances and compatibility with dedicated 1.2 engines are maintained. For the user, this means:

• easier fitment during installation without the need to modify other components,
• consistency with factory timing settings and service documentation,
• the ability to use existing reference points when setting timing marks.

The used product allows for an economical replacement of the component while maintaining the original manufacturer's specifications, which is beneficial for budget repairs or restoring vehicle functionality after a mechanical failure.

Practical application and installation

The timing gear for the VW Polo 6R and Skoda Fabia 5J is suitable for both standard timing replacements and repairs following mechanical damage in the crankshaft area. Thanks to the retention of the factory tooth profile and fitment for specific 1.2 engine generations, installation proceeds according to the service procedures provided for these models.

When combined with properly selected accompanying elements (timing drive, tensioners, guides), it allows for the restoration of the engine's original operating conditions, which is significant for the durability of the entire system.

System expansion and selection of related components

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other elements from the same group, such as additional gears cooperating with the shaft, fasteners, or related drive components, check out the available parts in the Volkswagen Crankshafts category.

For drivers considering broader service work on the chassis or drivetrain, a guide comparing different suspension solutions and issues regarding the selection of used components may be helpful – details can be found in the article Standard vs. sports suspension – design differences and is it worth buying used suspension parts?.