Ford Fiesta St Mk7 Front Axle Driveshaft Right O/S C1BY-3B436-AB

Ford Fiesta St Mk7 Front Axle Driveshaft Right O/S is an original drivetrain component designed for the petrol version with front-wheel drive. Thanks to its factory geometry and precise fitment for the front passenger side, it ensures stable torque transmission and predictable vehicle behavior during acceleration and engine braking. This is a practical solution for users looking for a proven, used OEM component instead of unreliable aftermarket replacements.

Specifications and technical data

• SKU: C1BY-3B436-AB
• Mark: Ford
• Condition: Used
• OEM Part Number: C1BY-3B436-AB
• Substitutable numbers: C1BY-3B436-AB, C1BY3B436AB, 2126177
• Location on the vehicle: Front, Right
• Fuel type: Petrol
• Category: Driveshafts

Purpose and fitment for Ford Fiesta St Mk7

The presented driveshaft has been designed specifically for operation on the front axle on the right side in the sporty Ford Fiesta St Mk7 variant with a petrol engine. This means compatibility with factory mounting points, correct length, and proper joint operating angles, which translates into correct interaction with the wheel hub, steering knuckle, and gearbox.

By maintaining the original design, the drivetrain retains its factory characteristics – both in terms of acceleration smoothness and resistance to dynamic loads typical of the ST version. This is particularly important in cars used more dynamically, where the quality and rigidity of drivetrain components have a direct impact on handling.

Technical characteristics of the driveshaft

The driveshaft from this series belongs to the Driveshafts category, i.e., components responsible for transferring torque from the transmission to the driven wheel. The design provides for operation in a front-wheel-drive system, taking into account variable wheel steering angles and suspension movement, which requires precisely selected joints and appropriate rigidity of the entire assembly.

The version dedicated to petrol units in the Ford Fiesta St Mk7 has been optimized for the loads generated by this type of engine and the gearbox characteristics. Proper tuning of the shaft's mass and rigidity helps reduce vibration and noise, which improves driving comfort and the durability of other drivetrain components.

Practical application and benefits of installation

Using an original, used driveshaft to replace a worn-out component allows for restoring proper drivetrain operation without interfering with the suspension or transmission design. This solution is particularly beneficial when symptoms appear such as:

• knocking or vibrations during starting and acceleration,
• jerking when the wheels are turned,
• uneven power delivery to the right front wheel.

Choosing an original component from dismantling allows you to maintain factory operating parameters while reducing costs compared to new parts. For workshops and individual users, this means more predictable installation and a lower risk of fitment issues.

Selection of drivetrain components and technical knowledge

When replacing a driveshaft, it is worth paying attention to compatibility with the specific engine version and vehicle drivetrain, as well as parameters such as gear ratios and the operating characteristics of the entire system. For those who want to better understand the relationships between the drive axle, differential, and the rest of the drivetrain, the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which discusses the technical selection of components for a specific driving style, will be helpful.

Expanding work within the Ford drivetrain

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Ford and need other elements from the same group, such as half-shafts, joints, or complete driveshafts, check the available parts in the Ford Driveshafts category.