Ford Focus St-3 Mk2 Front Axle Driveshaft Right O/S RM4N51-3B436-X1K

Ford Focus St-3 Mk2 Front Axle Driveshaft Right O/S is an original component from the Driveshafts group, designed for installation on the right side of the front axle. This is a solution for users who expect stable torque transmission, correct suspension geometry, and compliance with Ford's factory design specifications.

Specifications and technical data

• SKU: RM4N513B436X1K
• Mark: Ford
• Condition: Used
• OEM Part Number: RM4N513B436X1K
• Substitutable numbers: RM4N51-3B436-X1K, RM4N513B436X1K, 1798101
• Location on the vehicle: Front, Right
• Part type: Driveshaft
• Category: Driveshafts

Purpose and function in the drivetrain

The front right driveshaft in the Ford Focus St-3 Mk2 is responsible for the direct transmission of power from the transmission to the passenger-side wheel. A correctly selected component in this location is crucial for:

• maintaining smooth acceleration without vibrations or jerking,
• stable operation of the CV joints during cornering,
• preserving the proper handling characteristics of the car during daily and dynamic driving. The vehicle placement defined as front – right side allows for clear identification of the part and helps avoid mistakes when selecting the component for a specific body version and drivetrain configuration.

Original origin and compatibility with Ford Focus St-3 Mk2

The presented driveshaft comes from the Ford production line, which ensures the preservation of factory dimensional parameters, CV joint operating characteristics, and compatibility with suspension and transmission components. The original design ensures:

• fitment to factory mounting points without modifications,
• cooperation with stock hubs, bearings, and the gearbox,
• consistency with vehicle safety systems (e.g., traction control, ABS – in terms of the mechanical operation of the system). Thanks to this, replacing a worn driveshaft with an original used component allows you to maintain the handling characteristics typical of the St-3 Mk2 version, without the risk of unforeseen play or incorrect balancing.

Benefits of using a used OEM driveshaft

Choosing a used OEM component from the Driveshafts category is a reasonable compromise between repair cost and quality. In practice, this means:

• maintaining factory geometry and driveshaft length,
• reducing the risk of problems typical of cheap replacements (excessive vibrations, shorter service life),
• better cooperation with other drivetrain components that were designed for the original part. Such a solution is particularly beneficial in cars with increased power and a sporty character, where the build quality of the driveshaft has a direct impact on the durability of the entire drivetrain.

Professional selection and practical application

When replacing the front right driveshaft in a Ford Focus St-3 Mk2, it is worth paying attention to:

• compatibility of the placement on the vehicle (front, right side),
• origin from the same Ford model family,
• selection of an element from the Driveshafts group, dedicated to a specific drivetrain configuration. A repair set prepared in this way allows you to restore the proper operation of the drivetrain, reduce noise and vibrations, and ensure predictable vehicle behavior during acceleration, engine braking, and cornering. 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 driveshafts, CV joints, or complete shafts, check the available parts in the Ford Driveshafts category.

Substantive support for drivetrain repairs

When dealing with drivetrain transmission problems – such as vibrations, knocking when starting, or noise while driving under load – it is worth looking at the entire system as a whole: from the driveshafts and CV joints to the differential and drive axle. For users who want to better understand why original used components often prove to be a more durable and safer choice than random replacements, the following article will be helpful: Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement.