WABCO Air Dryer 4324102412 for Yutong, King Long, and Higer Buses – Applications and Common Fault Analysis

WABCO Air Dryer (Part No.: 4324102412): Function, Models, and Maintenance Guide

1. Function of the Part

The WABCO air dryer (Part No.: 4324102412) is a key component of the bus braking system. Its primary role is to remove moisture and oil vapors from compressed air, keeping the entire pneumatic system dry and clean.

Main function: Prevents freezing, corrosion, and rust inside air pipelines and valves, ensuring stable and reliable braking and suspension performance.

Application: Widely used in medium and large buses over 10 meters, as well as certain heavy-duty trucks. The performance of the air dryer directly affects braking safety and vehicle lifespan, making it a critical and frequently replaced part.

2. Applicable Bus Models

The WABCO 4324102412 air dryer is commonly used in the following major bus brands and models:

• Yutong: ZK6107H, ZK6119H2, ZK6122HD9

• King Long: XMQ6129Y, XMQ6900Y

• Higer: KLQ6129Q, KLQ6119Q

• Scania / Higer Touring: Applicable to some imported bus models
  
  

3. Cross Reference & Alternative Part Numbers

For purchasing and inventory management, here are the official and alternative part numbers often used in the market:

• WABCO Original: 4324102412

• Cross references: 432 410 222 7 / 432 410 230 2

• Chinese Aftermarket: Yutong 3502-00345

Tip: When purchasing, it is always recommended to confirm the vehicle VIN and system configuration to ensure a perfect match.

4. Common Faults and Solutions