Ford Focus Mk2 Wheel Carrier Bearing Hub Knuckle Front Left N/S 3M51-3K171-FA

Ford Focus Mk2 Wheel Carrier Bearing Hub Knuckle Front Left N/S is a component from the Wheel bearings, hubs and bushings group, designed for the chassis of petrol-engine vehicles. This is a used, original Ford part that allows for professional repair of the front suspension on the driver's side, while maintaining proper geometry and handling stability.

Specifications and technical data

• SKU: 3M51-3K171-FA
• Mark: Ford
• Condition: Used
• OEM Part Number: 3M51-3K171-FA
• Substitutable numbers: 3M51-3K171-FA, 3M513K171FA, 1477862
• Location on the vehicle: Front, Left
• Fuel type: Petrol
• Part type: Wheel Bearing
• Category: Wheel Bearings, Hubs & Seals

Purpose and function in the chassis system

The described Ford Focus Mk2 Wheel Carrier Bearing Hub Knuckle is structurally matched to the Ford Focus Mk2 with a petrol engine and is mounted in the front axle area on the left side. It is responsible for the stable seating of the wheel hub and bearing, as well as interaction with the suspension strut and steering components, which has a direct impact on steering precision and driving safety. Thanks to the factory-spec mounting geometry, the knuckle allows for correct wheel alignment and camber settings, which reduces uneven tire wear and improves the vehicle's behavior during braking and cornering. This is particularly important after collisions, hitting a curb, or intensive use on uneven surfaces.

Benefits of using an original Ford knuckle

Using an original Ford component in the suspension area provides a number of practical benefits:

• secure fitment to body and suspension mounts without the need for modifications,
• preservation of factory steering system performance parameters,
• stable handling at higher speeds,
• reduction of vibrations and unwanted play within the wheel area. For workshops and users, this means efficient installation, predictable results after alignment, and a lower risk of operational issues in the future. In the case of petrol-powered vehicles, selecting the correct knuckle for the specific body version and chassis setup is crucial for the durability of the entire suspension.

Professional selection and compatibility with reference numbers

The knuckle belongs to a group of components where compatibility with the OEM number and interchangeable numbers is essential; therefore, it is worth verifying fitment by part number or vehicle VIN before purchasing. This helps avoid mistakes between different suspension variants, engine versions, or changes introduced during the model's production run. If you would like to learn more about selecting used OEM parts by part numbers and VIN, you will find practical tips and examples in the article The five-cylinder Audi engine – a legend from Quattro to RS3 and how to maintain it with original Audi parts, where the principles of safely using reference numbers are discussed.

Application in Ford Focus Mk2 suspension repairs

The Ford Focus Mk2 Wheel Carrier Bearing Hub Knuckle is suitable for both typical repairs following mechanical damage and comprehensive front suspension rebuilds. It is particularly useful when symptoms such as the car pulling to one side, problems with wheel alignment, excessive one-sided tire wear, or visible deformation of load-bearing elements near the wheel occur. If you are planning a comprehensive repair or upgrade of the suspension and chassis area in your Ford and need other components from the same group, such as hubs, bearings, or wishbone bushings, check out the available parts in the Ford wheel bearings, hubs and bushings category.

Summary

Ford Focus Mk2 Wheel Carrier Bearing Hub Knuckle is a used, original component from the Wheel bearings, hubs and bushings group, designed for vehicles with a petrol engine. It ensures proper wheel seating, interaction with the suspension and steering system, and enables correct geometry settings, which translates into safe and stable vehicle operation after repair.