Smart Fortwo 451 Wheel Carrier Hub Axle Front Left N/S A4513320101

The front left steering knuckle with hub for Smart Fortwo 451 is an original suspension component designed for installation on the front axle on the driver's side. Thanks to its factory geometry and precise fit for the specific construction of the Fortwo 451 model, this part ensures stable vehicle handling and proper cooperation with the suspension and steering system. It's a practical solution for users looking for a proven, used OEM part instead of more expensive aftermarket alternatives.

Specifications and technical data

• SKU: A4513300159
• Mark: Smart
• Condition: Used
• OEM Part Number: A4513300159
• Substitutable numbers: A4513300159, A 451 330 01 59, A4513320101, A 451 332 01 01
• Location on the vehicle: Front, Left
• Part type: Wheel Bearing
• Category: Wheel Bearings, Hubs & Seals

Purpose and Function in the Drivetrain

The steering knuckle with hub described is a component of the front suspension support system, responsible for guiding the wheel, transferring loads from the road surface, and maintaining correct wheel geometry. It is mounted on the front axle on the left side, working in conjunction with the shock absorber, control arm, wheel bearing, and braking system.

A properly selected steering knuckle with hub influences:

• vehicle steering precision and driving stability,
• even tire wear,
• correct operation of the braking system and ABS,
• reduction of vibrations transmitted to the body.

Construction and Fit for Smart Fortwo 451

This component has been specifically designed for the Smart Fortwo generation 451, taking into account the vehicle's compact design and characteristic wheelbase. The integration of the steering knuckle and hub into a single unit simplifies installation and servicing, while also preserving factory mounting points for the suspension, brakes, and steering system.

As part of the Wheel Bearings, Hubs, and Bushings group, this component forms a key node responsible for smooth wheel rotation and the transfer of vertical and lateral loads. Proper fitment for the specific Smart model minimizes the risk of geometry issues and premature tire wear.

Benefits of Using an Original Used Steering Knuckle

Using an original, used part allows for adherence to the vehicle's factory parameters while optimizing repair costs. Compared to random aftermarket replacements, an OEM part ensures:

• preservation of the manufacturer's designed rigidity and durability,
• secure fitment to suspension and brake mounts,
• consistency with other drivetrain components.

If you have doubts regarding the selection of a used component, it's worth reading the practical explanations and examples in the article Used Car Parts: Myths and Facts You Need to Know, which dispels common concerns about such solutions.

Selection by OEM Number and Compatibility

The steering knuckle with hub has a dedicated OEM number and associated replacement numbers, which facilitates unambiguous identification and selection for a specific version of the Smart Fortwo 451. Before purchasing, it is advisable to compare the markings with your vehicle's documentation or the removed part to ensure full compatibility.

If you want to streamline the selection process and check part compatibility with your car step-by-step, the guide How to Select the Right Car Part by VIN and OEM Number can be helpful, offering practical tips and a list of questions for the seller.

Application in Drivetrain Repairs and Upgrades

The presented steering knuckle with hub is suitable for both typical repairs after mechanical damage (e.g., after a collision or hitting a curb) and for comprehensive front suspension renovation. Replacing this component is particularly recommended when there are:

• permanent deformations or cracks in the steering knuckle area,
• problems with wheel geometry alignment,
• excessive play in the wheel mounting area.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Smart and need other parts from the same group, such as hubs, bearings, or bushings, check the available parts in the Smart Wheel Bearings, Hubs, and Bushings category.

Summary

The front left steering knuckle with hub for Smart Fortwo 451 is a practical solution for drivers who want to restore proper vehicle handling and wheel geometry while maintaining factory design parameters. The original nature of the part, its specific fit for the model, and the well-designed support system make it a sensible choice for suspension and drivetrain repairs on this compact city car.