

The part is a comprehensive cab ventilation and defrosting distribution system engineered specifically for the HOWO Max 4X2 tractor, ensuring efficient airflow for heating, cooling, and windshield defrosting. This complete kit includes multiple precision-formed air ducts, a central defrosting duct with sound-absorbing cotton, and all necessary mounting screws, providing a complete solution for restoring or upgrading the cabin’s climate control system
. As genuine howo Parts, The part meets the highest OEM standards for fit, airflow efficiency, and durability, delivering the comfort and visibility that professional drivers rely on. Every component in this Air duct kit is manufactured to exacting tolerances, ensuring a secure, rattle-free installation that directs conditioned air precisely where needed,
reducing fogging and maintaining a comfortable cabin environment in all weather conditions. This Air duct kit is the ideal solution for replacing cracked, warped, or damaged ducts, eliminating air leaks and restoring the factory performance of the vehicle’s HVAC system.
The part integrates multiple individual duct sections, each designed to route air to specific outlets such as the dashboard vents, footwells, and side window demisters. The Central defrosting Duct (with sound absorbing cotton) (NJ20) is a key component that directs warm air to the windshield to prevent fogging and ice buildup, and its integrated sound-absorbing cotton reduces blower noise for a quieter cabin. The Hexagon flower pan head tapping screws provide secure,
vibration-proof fastening of the duct sections to the dashboard and heater core housing. Each component is precisely engineered to work in harmony, providing a robust, leak-free air distribution network that ensures the driver and passengers enjoy consistent temperature control and clear visibility. This Air duct kit is the ideal choice for restoring the full functionality of the cab’s HVAC system, eliminating drafts, whistles, and uneven airflow.
With The part, you can restore the full climate control capability of your HOWO Max 4X2, ensuring a comfortable and safe cabin environment in all conditions. Trust in HOWO’s engineering and the quality of this Air duct to keep your truck performing at its peak.
The part sections are the primary channels that distribute conditioned air from the HVAC blower to the various cabin outlets. Manufactured from high-density, UV-stabilized plastic, these ducts are precision-molded to follow the exact contours of the HOWO Max 4X2 dashboard, ensuring a perfect fit and minimal air leakage. Each section features smooth internal surfaces that minimize airflow resistance,
maximizing blower efficiency and reducing noise. The ducts are designed with integrated mounting tabs and alignment guides, simplifying installation and ensuring correct orientation. Replacing cracked, broken, or warped air ducts with these genuine components restores the factory airflow balance, eliminating whistles, drafts, and uneven temperature distribution, and ensuring that the defrosting and ventilation systems perform as intended.
The various Air duct sections included in this kit cover all critical routing paths, including the main dashboard vents, side window demisters, and footwell outlets. Their robust construction resists warping and cracking, even under the temperature extremes of the cab environment,
ensuring long-term reliability. Replacing a faulty duct with this genuine component restores the full performance of the HVAC system, enhancing driver comfort and safety by ensuring clear visibility and consistent cabin temperature. This Air duct is an essential part of the overall climate control system.
The part sections are also designed for easy servicing, with snap-fit connections that allow for quick disassembly and reassembly. This makes it simple to inspect and clean the ductwork, preventing the buildup of dust and debris that can affect air quality and blower performance. Trust in the quality of these Air duct components to keep your cabin comfortable and your windshield clear in all driving conditions.
The Central defrosting Duct (with sound absorbing cotton) (NJ20) is a specialized component of The part system, specifically designed to direct a focused stream of warm air to the windshield area to rapidly clear fog and ice. This duct features an integrated layer of sound-absorbing cotton that significantly reduces the noise generated by the blower motor and rushing air,
creating a quieter, more pleasant cabin environment. Its precision-engineered outlet shape ensures that the air is distributed evenly across the windshield, maximizing defrosting efficiency and improving visibility in cold and humid conditions. The NJ20 designation ensures compatibility with the HOWO Max 4X2’s specific dashboard layout, guaranteeing a perfect fit and optimal performance.
The Central defrosting Duct is constructed from high-quality, heat-resistant plastic that maintains its shape and integrity even under prolonged exposure to hot air. The sound-absorbing cotton is bonded securely to the duct, resisting detachment and degradation over time. Replacing a damaged or missing central defrost duct with this genuine component restores the full defrosting performance of the HVAC system, ensuring that the driver maintains a clear field of view at all times. This duct is a critical safety component of The part system, contributing directly to safe driving in adverse weather.
The Central defrosting Duct (with sound absorbing cotton) (NJ20) is also designed to be easily replaceable, with simple snap-fit or screw attachments that allow for quick installation. Its inclusion in The part kit ensures that the entire defrosting system can be renewed in one operation, saving time and ensuring consistency. Trust in this genuine component to keep your windshield clear and your cab quiet.
The Hexagon flower pan head tapping screw is a high-quality self-tapping fastener used to securely attach The part sections to the dashboard and HVAC housing. Its unique hexagon flower drive provides excellent torque transfer and prevents cam-out, ensuring that screws can be tightened securely without stripping. The pan head offers a low-profile, flush finish,
contributing to a clean, professional appearance. These screws are made from corrosion-resistant steel, ensuring long-term fastening integrity even in the humid cab environment. The tapping thread design allows for quick
, secure attachment directly into plastic mounting bosses, eliminating the need for nuts or clips and simplifying installation. Replacing missing or damaged screws with these genuine components ensures that all duct sections remain firmly in place, eliminating rattles and preventing air leaks that can reduce HVAC efficiency.
The Hexagon flower pan head tapping screws are supplied in the exact quantity needed for a complete installation of The part system, eliminating the need to source separate hardware. Their consistent quality and precise thread dimensions ensure reliable fastening, preventing loosening due to vibration. Replacing worn or stripped screws with these genuine components is essential for maintaining the structural integrity of the duct assembly and ensuring that the airflow remains unobstructed. These screws are a small but critical part of The part system, providing the mechanical security that keeps the entire ventilation network functioning properly.
The Hexagon flower pan head tapping screw is designed to be reused multiple times without loss of holding power, making it a practical choice for both initial assembly and future service. Its corrosion-resistant finish ensures that it will not rust or seize, simplifying disassembly when needed. Trust in these genuine fasteners to keep your Air duct system securely mounted and leak-free.
| Material Encoding | Name |
|---|---|
| YG1671820003 | Air duct |
| YG1671820004 | Air duct |
| YG1671820005 | Air duct |
| YG1671820006 | Air duct |
| YZ167182000070 | Central defrosting Duct (with sound absorbing cotton) (NJ20) |
| YG1671820008 | Air duct |
| YG1671820009 | Air duct |
| Q27A4816F31 | Hexagon flower pan head tapping screw |
| YG1671820001 | Air duct |
This Air duct kit includes every duct section needed to fully restore the cab ventilation and defrosting system – from the main dashboard ducts to the central defrosting duct and all fasteners. This comprehensive solution eliminates the need to source individual parts, guaranteeing compatibility and simplifying the replacement process.
All Air duct components are manufactured to the exact OEM specifications, using high-quality, UV-stabilized plastics that resist warping and cracking. The precision-molded joints ensure a tight, leak-free fit, maximizing airflow efficiency and preventing whistles, drafts, and loss of heating or cooling performance.
The part sections are designed to match the exact contours of the HOWO Max 4X2 dashboard, ensuring a perfect fit with no gaps or misalignment. The central defrosting duct includes sound-absorbing cotton that significantly reduces blower noise, creating a quieter, more comfortable cabin environment for the driver and passengers.
As genuine howo Parts, The part kit is designed and validated by the same engineers who developed your truck’s HVAC system. You receive the assurance of quality, compatibility, and performance that only OEM components can provide, backed by HOWO’s global service network.
The part is a critical system for maintaining a comfortable and safe cabin environment in your HOWO Max 4X2. Damaged or degraded ducts can lead to reduced airflow, uneven temperature distribution, and poor defrosting performance, compromising driver comfort and visibility, especially in cold or humid conditions. Rebuilding with this complete Air duct kit restores the factory-level air distribution and defrosting efficiency, ensuring that the HVAC system operates as intended.
The multiple Air duct sections route air precisely to the dashboard vents, side windows, and footwells, while the Central defrosting Duct (with sound absorbing cotton) (NJ20) ensures rapid clearing of the windshield. The Hexagon flower pan head tapping screws provide secure, vibration-proof fastening, keeping the ducts firmly in place and preventing air leaks. Together, these components form a reliable, high-performance Air duct system that you can trust.
Installation of The part kit is straightforward, with all sections designed to snap or screw directly into the existing mounting points. The included hardware is the correct type and quantity for the job, ensuring that you have everything needed for a professional, factory-quality installation. Regular inspection of the ductwork is recommended to ensure that no cracks or disconnections have developed, which could affect airflow.
For fleet operators, standardizing on The part kit simplifies parts management and ensures consistent HVAC performance across all vehicles. The durable construction of these genuine components reduces the frequency of repairs, lowering total cost of ownership and improving driver satisfaction. Owner-operators will appreciate the peace of mind that comes from using genuine HOWO parts, knowing that their climate control system is protected by the highest-quality components.
The part kit is also compatible with the vehicle’s climate control system, maintaining the original airflow balance and blower efficiency. Its precision fit ensures that no modifications are required, preserving the factory engineering. This attention to detail reflects the quality of The part and its role in keeping your truck comfortable and safe.
In summary, The part is the definitive solution for restoring the ventilation and defrosting system of your HOWO Max 4X2. Its comprehensive design, OEM-quality construction, and ease of installation make it the smart choice for any professional driver or fleet manager. Choose The part for your next HVAC service and experience the difference that genuine howo Parts make. This investment in comfort and safety will pay dividends in driver well-being, clear visibility, and reduced downtime.
Order The part today and ensure that your HOWO Max 4X2 continues to deliver the dependable climate control that you expect. With this complete kit, you can restore your cab ventilation system to factory-new condition and drive with confidence.
Don’t compromise on cabin comfort – upgrade with the genuine Air duct and keep your HOWO Max 4X2 operating at its best.
The part – engineered for HOWO Max 4X2, delivering complete cab ventilation and defrosting reliability for driver comfort and safety.