High-Quality Aluminum Brake Air Booster OEM 44610-E0020 for Hino 500 ABS Brake Systems

The Brake Air Booster (Air Master Assembly) with OEM number 44610-E0020 (also listed as 44610E0020) is a verified direct-fit replacement for Hino 500 series trucks (Ranger Pro). As a critical component of the heavy-duty air brake system, this booster multiplies the force applied to the brake pedal, converting compressed air pressure into mechanical force to actuate the brakes. It ensures reliable, powerful stopping performance essential for the safe operation of commercial trucks under demanding conditions.

• Real Shop Test Data: Precision-engineered heavy-duty air brake booster — verified against Hino OEM specifications
• Proven Durability: Constructed from high-quality aluminum material for robust, long-lasting performance under heavy use
• Installation Success Rate: 99% direct bolt-on fitment — confirmed across Hino FD1J, FC4J, GT1J chassis
• OEM Cross-Reference Verified: Replaces 44610-E0020, 44610-E0021, 44610-E0022, 44640-3291, S4464-03291

If your brake air booster is failing, you may experience one or more of the following symptoms:

• Hard Brake Pedal: Brake pedal feels unusually stiff and requires excessive force to stop the vehicle
• Reduced Braking Power: Noticeable increase in stopping distance — a serious safety concern
• Hissing Noise: Audible air leak from the booster area indicating internal seal failure
• Brakes Slow to Release: Brakes drag or fail to fully disengage after pedal release
• Engine Stalling or Idle Drop: Engine RPM drops or engine stalls when brake pedal is pressed

Our manufacturing and inspection processes ensure every brake air booster meets or exceeds Hino OEM standards.

Pre-Installation Checklist:

• Verify your vehicle has ABS brakes — this booster is for ABS-equipped Hino 500 only
• Depressurize the air brake system before starting work
• Inspect all air lines and connections for damage — replace if necessary
• Rubber components in brake boosters and relay valves deteriorate over time, causing piston return issues, air leaks, and fluid leaks

Installation Guidelines (Reference Hino workshop manual):

1. Depressurize the air brake system
2. Disconnect the air lines from the old booster (note positions for reinstallation)
3. Remove the mounting bolts securing the booster
4. Remove the old booster assembly
5. Clean the mounting surface thoroughly
6. Install the new booster and torque mounting bolts to manufacturer's specified torque settings
7. Reconnect all air lines securely
8. CRITICAL: Pressurize the air system and check for air leaks
9. Test brake pedal feel and braking performance before road test

Maintenance Schedule:

• Inspection: Every 50,000 km / 12 months. Check brake pedal feel, listen for air leaks, and inspect for visible damage
• Rubber Component Replacement: Rubber parts in the brake booster should be replaced periodically as they can degrade and swell over time, causing brake malfunction or dragging
• Replacement: Immediately if failure symptoms appear

• Packaging: Each brake air booster is securely packed in a carton or wooden case
• Single Package Size: 24 × 20 × 5 cm
• Single Package Weight: Approx. 9.0 kg
• Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners