Product Introduction

The 3353320101 Steering Knuckle is one of the most important load-bearing components in the front steering axle system of Mercedes-Benz SK, MK, NG series, and Beiben NG80 heavy-duty trucks.

Installed between the front axle beam, kingpin assembly, wheel hub, brake components, and steering linkage, the steering knuckle allows the front wheels to pivot smoothly while supporting substantial vertical and lateral loads generated during heavy-duty transportation.

The steering knuckle works together with:

• Front axle beam
• Kingpin repair kit
• Steering knuckle arm
• Tie rod end
• Drag link
• Wheel hub assembly
• Wheel bearings
• Brake drum
• Brake backing plate

Its primary functions include:

• Supporting the wheel hub assembly
• Providing steering pivot movement
• Transferring steering force to the front wheels
• Maintaining accurate steering geometry
• Carrying heavy front axle loads

Under heavy-load transportation, mining, construction, and long-distance logistics operations, the steering knuckle is continuously subjected to steering loads, braking forces, road impacts, and vibration. A worn or damaged steering knuckle may result in:

• Steering instability
• Excessive kingpin clearance
• Wheel alignment deviation
• Uneven tire wear
• Front axle vibration
• Reduced driving safety

The 3353320101 steering knuckle is manufactured from premium forged alloy steel using precision forging, CNC machining, and heat treatment. Critical areas including the kingpin bore, bearing seats, and steering arm mounting surfaces are machined to OEM tolerances, ensuring precise installation and long-term reliability.

Designed according to OEM specifications, this steering knuckle provides direct replacement compatibility for Mercedes-Benz SK, MK, NG, and Beiben NG80 front axle systems. It is widely used for steering system repairs, front axle rebuilding, fleet maintenance, mining trucks, construction vehicles, and heavy-duty commercial transportation.

Each steering knuckle undergoes comprehensive quality inspections including:

• Material composition analysis
• Forging integrity inspection
• Heat treatment hardness testing
• Dimensional accuracy verification
• Kingpin bore precision measurement
• Installation fitment testing

to ensure OEM-level performance, durability, and safety.

Technical Specifications

Vehicle Fitment

Payment & Shipping

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