The part is the fully integrated cabin unit of the HOWO MAX 4X2 tractor, providing a comfortable, safe, and functional workspace for the driver. This genuine HOWO cab assembly kit includes essential interior trim components such as blanking caps, plug covers, tapping screws, plastic nut holders, and blind hole plates – all precision-engineered for a perfect fit. When you choose authentic Howo Parts, this Cab Assembly kit guarantees OE quality, easy installation, and long-lasting durability. Below are detailed descriptions of every component included with this Cab Assembly.
The blanking cap is a precisely moulded plastic cover that seals unused mounting holes or openings in The part interior trim. This cap prevents dust and moisture ingress, maintaining the cabin’s clean appearance and protecting electrical connectors behind the panels. It is made from UV-stabilised ABS plastic, matching the original interior colour and texture.
The rear independent warm air hole plug cover is a specialised trim piece that seals the warm air outlet opening in the rear of The part. This cover is designed to block the warm air duct when the independent heater is not installed, preventing dust and debris from entering the ventilation system. It is made from durable, heat-resistant plastic with a snug fit.
Three hexagon flower pan head tapping screws are provided for securing the blanking caps and plug covers to The part interior panels. These self-tapping screws are made from case-hardened steel with a phosphate coating, offering strong thread engagement in plastic and sheet metal. The pan head design provides a large bearing surface that prevents pull-through.
The plastic nut holder (ST 4.8) is a spring-steel retainer that holds a captive nut inside The part trim panel, allowing quick and secure attachment of screws without the need for separate nuts. This component simplifies assembly and ensures that fasteners stay aligned during installation, reducing assembly time and preventing cross-threading.
The blind hole plate is a metal or plastic cover that conceals unused mounting points or access holes in The part floor or firewall. It is stamped to match the exact contour of the surrounding panel and is secured with the supplied tapping screws, providing a flush, watertight seal that enhances cabin insulation and noise reduction.
Cab Assembly – genuine HOWO interior trim and cover hardware kit for MAX 4X2
This Cab Assembly kit provides all the essential covers, plugs, screws, and retainers needed to finish the interior trim. No extra parts are required, making this Cab Assembly kit a convenient one-stop solution for cabin refurbishment.
All plastic components in this Cab Assembly are moulded from UV-stabilised ABS, and the metal parts are phosphate-coated or zinc-plated for corrosion resistance. This Cab Assembly kit is manufactured to SINOTRUK’s original colour and texture specifications.
The part components are designed for fast, tool-friendly installation. The self-tapping screws and plastic nut holders allow secure attachment without specialised tools, reducing workshop labour time for this Cab Assembly kit.
Over time, interior trim covers can become lost or damaged. This Cab Assembly kit provides the exact replacements needed to restore the cabin to its original condition, maintaining the value and appearance of your HOWO MAX 4X2.
The part interior trim components are engineered to meet the demanding requirements of heavy-duty trucking. The blanking caps and plug covers are tested for temperature resistance from -40°C to +85°C, ensuring they remain flexible and dimensionally stable in extreme climates. The tapping screws are heat-treated to HRC 40-45, providing strong thread-cutting capability without stripping.
The plastic nut holders are made from PA66 with 30% glass fibre reinforcement, offering high pull-out strength and resistance to vibration. Each component in this Cab Assembly is inspected for dimensional accuracy and surface finish before packing.
The part kit is supplied in a recyclable cardboard box with foam inserts to protect the parts during shipping. Using genuine Cab Assembly components ensures that all fastening points align correctly, preventing rattles and ensuring a professional-quality finish.
Before installation, identify the locations where each component is needed. The blanking cap fits into unused switch or mounting holes on the dashboard or door panels. The rear independent warm air hole plug cover should be installed in the rear wall air duct opening. The hexagon flower pan head tapping screws are used to secure the blind hole plate and other covers. The plastic nut holder is inserted into the trim panel’s square hole,
then the screw is driven into it. Begin by cleaning the mounting areas with a mild solvent to remove dirt and grease. Insert the nut holder into the panel cutout, ensuring it clicks into place. Position the cover or plate over the opening and insert the screw,
tightening it gently until the cover is flush. Do not overtighten, as this may crack the plastic. For the warm air hole plug cover, simply press it into the duct opening until it snaps into place. After installing all components, check that each cover is secure and does not rattle. The part installation is now complete, restoring the cabin’s original fit and finish.
If a blanking cap falls out, the retaining clips may be broken; replace the cap with a new one from The part kit. If a tapping screw does not tighten, the nut holder may be damaged or the thread may be stripped;
replace the nut holder and use a fresh screw. If the rear warm air plug cover does not seat properly, check for debris in the duct opening; clean and reinstall. A loose blind hole plate can cause rattling; tighten the screws evenly. If the plastic nut holder is missing, install a new one before securing the trim. Always use genuine Cab Assembly components for replacement to maintain proper fit and function.
The part interior trim components require very little maintenance. Periodically inspect the covers and caps for signs of wear or damage, especially after long periods of cab vibration. Check that all screws remain tight;
retighten if any movement is detected. Clean the plastic parts with a soft cloth and mild interior cleaner; avoid harsh solvents that could cause discoloration or cracking. If any component becomes loose or falls out,
it should be replaced immediately to prevent dirt ingress or electrical shorts. The part kit is designed to last the life of the vehicle, but normal wear may necessitate replacement of individual pieces over time. Keeping a spare set of the most common clips and screws in the workshop can minimise downtime during interior repairs.
This Cab Assembly kit is specifically designed for the HOWO MAX 4X2 tractor cab and is compatible with all production years from 2018 onward. The blanking cap and plug cover dimensions match the standard switch and duct openings used in the MAX 4X2 interior.
The tapping screws and nut holders are standard sizes used across the SINOTRUK range, making this Cab Assembly kit suitable for other HOWO models such as SITRAK C7H and HOWO T7H, where the same trim fasteners are employed. The blind hole plate is designed for the floor pan and firewall of the MAX 4X2. Always verify your vehicle’s interior panel configuration before ordering The part kit.
Aftermarket trim covers and fasteners often use lower-grade plastics that fade, warp, or crack under sunlight and temperature extremes. Generic tapping screws may have incorrect thread pitches, damaging the plastic nut holders. Non-genuine nut holders may not fit securely, causing covers to rattle or fall off. A missing blanking cap can expose electrical connectors to moisture, leading to corrosion and intermittent faults.
Genuine HOWO Cab Assembly components are manufactured to SINOTRUK’s exacting standards, ensuring perfect fitment, correct material properties, and long-term reliability. The small additional cost of a genuine Cab Assembly kit is far outweighed by the protection it provides to the vehicle’s interior and electrical systems.
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