Assembly assembly of toolbox cover system
Assembly Assembly of Toolbox Cover System – Complete HOWO Max 4X2 Storage Solution
2026-06-29
air handing unit
Air Handing Unit – Premium WABCO Air Drying Tank for HOWO Max 4X2
2026-06-29

Air Handing Unit – Complete Pneumatic System Kit for HOWO Max 4X2

The part is a comprehensive pneumatic assembly engineered specifically for the HOWO Max 4X2 tractor’s auxiliary power and brake systems. This complete kit includes all necessary components for air supply, distribution, and control, ensuring reliable operation of the vehicle’s pneumatic functions. As genuine howo Parts, every piece of The part meets strict OEM quality standards, guaranteeing precise fit and long-term durability.

The part integrates the main valve body, pipe clamps, brackets, seals, fittings, and a full set of fasteners. Each component is designed to work in harmony, providing leak-free connections, stable mounting, and efficient air flow management. Whether you are rebuilding the pneumatic system or performing routine maintenance, this air handling unit offers everything needed for a professional repair.

With The part, you can restore your vehicle’s air brake and auxiliary functions to factory performance. Trust in HOWO’s engineering to keep your truck safe and responsive on every journey. This air handing unit is the definitive solution for pneumatic system care.

Air Handling Unit

The Air handling unit is the central control valve that regulates air pressure and distribution. It is the core of The part, ensuring consistent performance under all load conditions.

External Teeth Serrated Lock Washer

The External teeth serrated lock washer provides positive locking against vibration. It is a critical fastener within The part, ensuring that bolts remain tight throughout the system’s life.

Nut Holder NG12

The Nut holder NG12 is a retaining clip that secures nuts during assembly. This component simplifies installation of The part, preventing misalignment and saving time.

Circlip NG12

The Circlip NG12 is an external retaining ring that secures components on shafts. Within The part, it prevents axial movement and maintains precise alignment of moving parts.

Elastic Element NG12

The Elastic element NG12 absorbs shocks and compensates for thermal expansion. It is a vital part of The part, maintaining consistent tension and preventing premature wear.

Ferrule-Type Right-Angle Joint Body

The Ferrule-type right-angle joint body provides a 90-degree turn in air lines. This fitting is essential for routing hoses neatly within The part, ensuring a leak-free seal.

Hexagon Nut

The Hexagon nut is a standard metric fastener used throughout The part. Its six-sided design allows for easy tightening, ensuring secure connections in the pneumatic assembly.

Backup Washer M22X1.5

The Backup washer M22X1.5 is a hardened steel washer that distributes clamping force. It protects threaded components of The part from damage under high pressure.

O-Ring 20.3X2.4

The O-ring 20.3X2.4 creates a leak-proof seal between mating surfaces. This elastomeric seal is a key element of The part, resisting oil, heat, and ozone for long-term integrity.

Steel Pipe 16 (Hose / APU1-Port)

The Steel pipe 16 connects The part to the auxiliary power unit port. Its corrosion-resistant coating ensures clean airflow and long service life in demanding environments.

Plug NG8 – M16 1.5

The Plug NG8 – M16 1.5 seals unused ports on The part. Its O-ring groove ensures a positive seal, preventing leaks and contamination in the pneumatic circuit.

Single Pipe Clamp

The Single pipe clamp secures air lines to the chassis. Its rubber-lined cushion reduces vibration, a crucial feature for The part to maintain stable connections.

Angle Bracket

The Angle bracket positions The part securely in the engine bay. Its 90-degree design allows versatile mounting and easy attachment to existing points.

Hexagon Toothed Bolt with Flange M12*1.25

This bolt features an integrated flange and serrated teeth for vibration-proof fastening. It is used for critical mounts within The part, ensuring long-term stability.

Hexagon Toothed Nut with Flange M12*1.25

This matching nut locks against the mating surface, preventing loosening. It is a vital fastener in the air handing unit, providing a robust connection for heavy-duty components.

Hexagon Bolt with Flange M6

The Hexagon bolt with flange M6 is used for lighter brackets and covers. Its built-in washer simplifies assembly of the air handing unit, ensuring uniform clamping force.

Hex Flange Nut M6

The Hex flange nut M6 is the matching nut for the M6 bolt, with an integrated washer. It is ideal for securing small-diameter clamps within the air handing unit.

APU Board

The APU board provides a rigid base for the air handing unit and its valves. Its pre-drilled holes align with the bracket, simplifying installation and ensuring proper orientation.

APU Bracket

The APU bracket is a heavy-duty steel support that secures the air handing unit to the vehicle frame. Its reinforced design handles the weight and vibration of the entire pneumatic assembly.

APU Guard Plate

The APU guard plate protects the air handing unit from road debris and water spray. Its slotted design allows airflow while keeping contaminants away from sensitive components.

Hexagon Bolt with Flange M10

The Hexagon bolt with flange M10 is a medium-duty fastener for mounting the APU bracket. Its flange eliminates the need for a separate washer, speeding up assembly of the air handing unit.

Hexagon Nut with Flange M10

The Hexagon nut with flange M10 complements the M10 bolt, providing a stable connection. It is used for structural attachments of the air handing unit, ensuring long-term rigidity.

Hex Bolt with Serrated Flange M16*1.5

This heavy-duty bolt features a serrated flange that locks into the mating surface. It is used for the most critical structural attachments of the air handing unit, providing exceptional vibration resistance.

Hexagon Toothed Nut with Flange M16*1.5

The matching nut for the M16 bolt, with a toothed flange that provides a positive lock. It is essential for securing the air handing unit to the frame rails, ensuring long-term stability.

Ejector Housing

The Ejector housing creates a vacuum or pressure differential for auxiliary functions. Its precision-cast body ensures efficient airflow within the air handing unit, with minimal pressure drop.

Hose

The Hose is a flexible rubber conduit that carries compressed air between the air handing unit and downstream actuators. Its reinforced construction resists kinking and abrasion.

Brake Silencer

The Brake silencer attenuates exhaust noise from brake valves. It is a key component of the air handing unit, improving cabin comfort and reducing environmental noise.

Hose Clamp

The Hose clamp is a worm-drive type clamp that securely attaches the rubber hose to fittings. It provides a permanent, leak-free seal for the air handing unit, resisting corrosion.

Hexagonal Bolt (M12 * 1.5)

The Hexagonal bolt (M12 * 1.5) is a general-purpose fastener for additional bracket mounts. Its fine pitch provides high clamping force in limited-space applications within the air handing unit.

Hex Head Bolt M6

The Hex head bolt M6 is used for lightweight components such as the guard plate. Its hex head allows easy tightening, making it a practical choice for the air handing unit.

air handing unit

Air handing unit – complete pneumatic system kit for HOWO Max 4X2

Product Parameters of Air Handing Unit

Material Encoding Name
YZ952536000351Air handling unit
Q41212External teeth serrated lock washer
WG9000361009Nut holder NG12
WG9000361008Circlip NG12
WG9000361007Elastic element NG12
AZ9003550040Ferrule-type right-angle joint body
1.90004E+11Hexagon nut
WG9000361016Backup washer M22X1.5
WG9000361017O-ring 20.3X2.4
YG9525360600Steel pipe 16 (Hose / APU1-port)
WG9000361011Plug NG8 – M16 1.5
YZ952547000041Single pipe clamp
WG9525470310Angle bracket
ZQ1811230TF6Hexagon toothed bolt with flange M12*1.25
ZQ32512T13F6Hexagon toothed nut with flange M12*1.25
ZQ1840640Hexagon bolt with flange M6
ZQ32006Hex flange nut M6
YG9525360138APU board
YG9525360123APU bracket
YG9525360207APU guard plate
ZQ1841040TF6Hexagon bolt with flange M10
ZQ32010T13F6Hexagon nut with flange M10
ZQ1811650TF6Hex bolt with serrated flange M16*1.5
ZQ32516T13F6Hexagon toothed nut with flange M16*1.5
YZ952536000455Ejector housing
AZ000036000337Hose
AZ000036000329Brake silencer
1.90004E+11Hose clamp
ZQ151C1225Hexagonal bolt (M12 * 1.5)
ZQ150B0670Hex head bolt M6

Why Choose Our Air Handing Unit?

Complete Pneumatic System in One Kit

This air handing unit includes all 30 essential components, from the main valve to every washer and clamp. You get a full overhaul package, saving time and effort in sourcing individual parts.

Leak-Proof and Vibration-Resistant Design

Every seal and fastener in the air handing unit is engineered to withstand extreme vibration and pressure fluctuations, ensuring a dependable, leak-free system that keeps your brakes and auxiliaries functioning perfectly.

OEM Fit and Factory-Grade Materials

All components of the air handing unit are manufactured to HOWO’s original specifications, guaranteeing exact dimensional accuracy and material compatibility. This ensures a trouble-free installation and performance equal to the factory build.

Backed by HOWO’s Engineering Excellence

As genuine howo Parts, this air handing unit is designed and tested by the same engineers behind your truck. You receive the same quality control and technical support that HOWO provides worldwide, giving you total confidence.

The air handing unit is the heart of your HOWO Max 4X2’s pneumatic system. With this comprehensive kit, you can address every potential failure point, from the main valve to the smallest retaining ring.

Each component of the air handing unit is designed to work as a cohesive system, ensuring optimal air flow, pressure stability, and brake response. The inclusion of multiple seals and locking hardware means you can trust this assembly for years of reliable service.

Installation is straightforward with the provided brackets and mounting hardware. The APU board and bracket provide a solid foundation, while the guard plate offers protection against environmental damage, all part of the air handing unit.

Regular maintenance of the air handing unit is simplified because all fasteners and seals are included. Fleet operators can standardize repairs and reduce downtime with this all-in-one solution.

The use of high-strength steel, corrosion-resistant coatings, and premium elastomers ensures that this air handing unit will withstand the harshest operating conditions, from desert heat to freezing cold.

For owner-operators, installing this air handing unit restores confidence in the vehicle’s braking and auxiliary functions. The peace of mind that comes from using genuine HOWO parts is invaluable.

The brake silencer and flexible hoses reduce noise and simplify routing, making the system both quiet and easy to service. Every detail has been considered to enhance the user experience of the air handing unit.

In summary, the air handing unit is the definitive pneumatic repair and upgrade solution for the HOWO Max 4X2. Its completeness, quality, and OEM precision set it apart from generic aftermarket alternatives.

Choose the air handing unit for your next maintenance project and experience the difference that genuine howo Parts make. This kit is an investment in safety, reliability, and vehicle longevity.

Order your air handing unit today and ensure that your HOWO Max 4X2 continues to deliver the performance and safety that professional drivers depend on.

With the air handing unit, you are not just replacing parts – you are renewing the entire pneumatic system to factory-fresh condition.

The air handing unit – engineered for HOWO Max 4X2, delivering reliable pneumatic performance and long-term durability.

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