Front Wheel Bearing Mazda 3 2015-2020 Changan B45A3304X

Front wheel bearing for Mazda 3 2015-2020 Changan part number B45A3304X is an important component of the wheel hub system, designed to help the wheel rotate smoothly, reduce friction between moving parts, and support the vehicle’s load during operation.

On the 2015-2020 Mazda 3, the front wheel bearing plays the role of connecting the hub and wheel axle, ensuring stable wheel rotation while driving and helping maintain precise, safe handling under a variety of operating conditions.

The wheel bearing is made from high-precision load-bearing steel balls, with internal lubrication and sealing to reduce friction, limit wear, and extend service life. During operation, the wheel bearing continuously bears load from the vehicle body, braking force, and impacts from the road surface.

After a period of use, the wheel bearing may wear, develop play, or fail due to heavy loads, poor road conditions, or water and dirt intrusion. When damaged, the vehicle often produces a humming or roaring noise from the wheel area, vibration at high speed, or affects steering performance and driving safety.

The Changan front wheel bearing part number B45A3304X is manufactured to high quality standards, offering strong load capacity, smooth operation, and stable durability, making it suitable for Mazda 3 2015-2020 replacement.

Product information

• Product name: Front wheel bearing / Front Wheel Bearing
• Part number: B45A3304X/ BKC33304X
• Brand: Changan
• Applicable vehicle: Mazda 3
• Vehicle year: Mazda 3 2015-2020
• Installation position: Front left or right wheel
• System: Suspension – wheel hub
• Condition: New

Functions and role

• Helps the wheel rotate smoothly and stably
• Reduces friction between the hub and wheel axle
• Bears load and impact forces during operation
• Supports the steering system for accurate operation
• Contributes to safety and ride comfort while driving

Key benefits

• High-precision workmanship
• Good load and heat resistance
• Smooth operation, reduced noise
• High durability, long service life
• Compatible installation with Mazda 3 2015-2020

Signs it needs inspection or replacement

• A humming or roaring noise appears from the front wheel while driving
• Noise increases with vehicle speed
• The steering wheel vibrates slightly during operation
• The wheel shows unusual play
• The vehicle pulls to one side or steering feels unstable
• The wheel bearing is found worn or damaged during maintenance inspection

👉 The front wheel bearing is an important component that directly affects the vehicle’s stability, comfort, and safety. When noise or signs of damage appear, it should be inspected and replaced early to avoid affecting the hub, suspension system, and vehicle performance.

Replacement recommendations

• Replace with the correct B45A3304X part for Mazda 3 2015-2020
• Check the condition of the hub and wheel spindle before installation
• Inspect the dust seal and related brake system
• Replace in pairs if both sides have been used for many years
• Align the steering system and check wheel play after replacement
• Prioritize high-quality parts to ensure durability, stable operation, and long-term safety.