The intake system is the vital pathway that delivers clean, filtered air to the engine for combustion. A well designed intake system ensures optimal engine performance, fuel efficiency, and longevity by preventing contaminants from entering the cylinders.
This genuine HOWO intake system includes all components needed for a complete air induction system on the MAX 4X2 tractor: from air inlets and filter assembly to hoses, clamps, brackets, and mounting hardware. When you choose authentic Howo Parts, you receive a complete intake system engineered specifically for the MAX 4X2 chassis.
The air inlet assembly is the entry point of the intake system, located at the front or side of the cab. This component draws in fresh air from outside the engine bay, ensuring the air is as cool and dust free as possible before entering the filter.
The rubber cushion block is an isolation mount that absorbs vibration from the engine and chassis. Four cushion blocks are used in the intake system to protect the air filter housing and intake pipes from vibration damage, preventing cracks and air leaks.
The hexagon nut of type 1 M10*1.5 is a standard metric fine pitch nut used to secure the intake system brackets to the chassis. Four nuts are supplied, made from zinc plated steel, and are compatible with the M10 bolts in the kit.
The large washer is used under bolt heads and nuts to distribute clamping pressure across a wider area. Four washers are included, each with an outer diameter of 20mm, protecting the plastic intake components from stress cracking.
The baffle is an internal component within the air intake housing that directs airflow evenly across the filter element. It also acts as a pre separator, causing larger dust particles to fall out of the airstream before they reach the filter.
The cross recessed pan head tapping screw is a self tapping screw used to attach the air inlet grille and other plastic trim components. Four screws are supplied, each with a Phillips drive and a sharp point that cuts its own threads in plastic.
The bellows is a flexible rubber connection between the air filter housing and the intake pipe. It allows relative movement between the engine and the chassis while maintaining an airtight seal, compensating for engine vibration and cab tilt.
The hose clamp 180/230 N05074 is a worm drive clamp used to secure the bellows to the intake pipe. It is made from zinc plated steel and provides a leak proof seal even under extreme vibration conditions.
The small air inlet (ordinary air filter) is a secondary air intake for the standard air filter. It draws in additional air during high engine demand, ensuring the filter does not become a restriction during heavy acceleration.
The hexagon bolt with flange M10 is used throughout the intake system to mount the air filter bracket and intake pipe supports. Multiple bolts of this type are supplied, each with an integrated flange that eliminates the need for a separate washer.
Additional hexagon bolts with flange M10 are used for the turbocharger air inlet pipe bracket and the lateral air inlet support. They have the same specifications as the previous bolts, with lengths varying from 16mm to 30mm as required.
The air inlet pipe of air filter is a rigid or semi rigid tube that connects the air inlet assembly to the air filter housing. This pipe is designed for minimal flow restriction and is made from UV resistant polypropylene.
The lateral air inlet is an additional air intake located on the side of the engine bay. It provides an alternative path for air when the primary inlet is obstructed or when extra airflow is needed for cooling the engine compartment.
The lateral air inlet bracket is a stamped steel bracket that supports the lateral air inlet. It bolts to the chassis frame and provides a rigid mounting point for the intake assembly, preventing vibration induced fatigue.
The hexagon nut with flange M10 is a flanged nut used with the lateral air inlet bracket bolts. Its integrated flange distributes clamping pressure, protecting the bracket from deformation under torque.
Additional hexagon nuts with flange M10 are used for the air filter bracket and other mounting points throughout the intake system. They match the bolts in quantity and are made from zinc plated steel for corrosion resistance.
The intake hose of air filter is a flexible rubber hose that connects the air filter outlet to the turbocharger inlet. It is reinforced with internal wire to prevent collapse under suction and is resistant to oil and heat.
The type A worm drive hose hoop is a stainless steel clamp used to secure the intake hose to the filter and turbocharger connections. Multiple hoops are supplied, each with a smooth inner surface that does not damage the rubber hose.
Additional worm drive hose hoops are used for the air outlet hose and the turbocharger air inlet pipe. They are identical in construction and provide a reliable, leak proof seal that can be tightened with a standard screwdriver.
The air filter assembly is the core component of the intake system. It houses the replaceable filter element that removes dust, dirt, and other contaminants from the incoming air. The assembly includes a housing with a quick release cover for easy filter changes.
The hexagon bolt with flange M10 is used to secure the air filter assembly to its mounting bracket. Four bolts are supplied, each with a thread length of 20mm, sufficient to penetrate the rubber isolation mounts and engage the steel bracket.
The air outlet hose of air filter is a heavy duty hose that carries filtered air from the air filter assembly to the turbocharger inlet. It is made from silicone rubber that withstands high temperatures and is reinforced with multiple layers of fabric.
The turbocharger air inlet pipe is a rigid metal pipe that connects the air outlet hose to the turbocharger compressor inlet. It is mandrel bent from aluminum to minimize flow restriction and is powder coated for corrosion resistance.
The hose clamp is a worm drive clamp used to secure the turbocharger inlet pipe to the turbocharger. It is sized specifically for the turbo inlet diameter and provides a leak proof seal under boost pressure.
The cross recessed pan head tapping screw is used to attach the air filter housing cover and various trim panels. Two screws are supplied, each with a thread cutting tip that eliminates the need for pre tapped holes in plastic components.
The large washer is used under the tapping screws to distribute clamping pressure over the plastic cover. Eight washers are supplied, preventing the screw heads from embedding into the plastic and causing stress cracks.
The hexalobular socket pan head screw is a Torx drive screw used for high torque applications on the intake system. Two screws are supplied, each with a star shaped drive that prevents cam out during installation.
The rear suspension locking cushion block is a rubber isolation mount used on the rear intake pipe support. It prevents metal to metal contact between the intake pipe and the chassis, reducing noise and vibration transmission.
Intake system – complete genuine HOWO air induction kit
| Material Encoding | Name |
|---|---|
| YG9525194500 – Air inlet assembly | |
| YG9525194502 – Rubber cushion block | |
| ZQ340B10 – Hexagon nut of type 1 M10*1.5 | |
| Q402B10 – Large washer | |
| YG9525194501 – Baffle | |
| Q2714213 – Cross-recessed pan head tapping screw | |
| YG9525194503 – bellows | |
| AZ9003980026 – Hose clamp – 180 / 230 N05074 | |
| YG9525194504 – Small air inlet (Ordinary air filter) | |
| ZQ1841016 – Hexagon bolt with flange M10 | |
| ZQ1841016 – Hexagon bolt with flange M10 | |
| ZQ1841030 – Hexagon bolt with flange M10 | |
| ZQ1841030 – Hexagon bolt with flange M10 | |
| YZ952519005003 – Air inlet pipe of air filter | |
| YG9525194505 – Lateral air inlet | |
| YZ952519005004 – Lateral air inlet bracket | |
| ZQ32010 – Hexagon nut with flange M10 | |
| ZQ32010 – Hexagon nut with flange M10 | |
| YG9525194507 – Intake hose of air filter | |
| AZ9003980030 – Type A worm drive hose hoop | |
| AZ9003980030 – Type A worm drive hose hoop | |
| AZ9003980030 – Type A worm drive hose hoop | |
| YG9525194508 – Air filter assembly | |
| ZQ1841020 – Hexagon bolt with flange M10 | |
| YG9525194510 – Air outlet hose of air filter | |
| YZ952519005005 – Turbocharger air inlet pipe | |
| 1.90004E+11 – Hose clamp | |
| Q2714825F31 – Cross-recessed pan head tapping screw | |
| Q402B06F31 – Large washer | |
| Q215B0616F31 – Hexalobular socket pan head screw | |
| YG1671440058 – Rear suspension locking cushion block | |
This intake system includes every component from the air inlet to the turbocharger. The air filter assembly, all connecting hoses, flexible bellows, mounting brackets, and every fastener are included. No need to source individual parts or adapt generic components.
The air filter assembly uses a high efficiency filter element that removes over 99% of airborne dust particles. The built in baffle acts as a pre separator, extending filter life by allowing larger particles to drop out of the airstream before reaching the filter media.
Rubber cushion blocks and flexible bellows isolate the intake system from engine and chassis vibration. This prevents fatigue cracking of plastic components and maintains airtight seals over the lifetime of the vehicle.
The intake hoses are made from silicone rubber that withstands underhood temperatures up to 200°C. The air outlet hose is reinforced with multiple fabric layers to prevent collapse under high suction, ensuring uninterrupted airflow to the engine.
When the engine is running, a low pressure region is created in the intake manifold. This draws air through the intake system. Air enters through the air inlet assembly and the lateral air inlet, passing through the bellows and into the air filter housing. Inside the air filter assembly, the baffle directs air around the filter element, causing larger dust particles to fall out of suspension.
The air then passes through the filter media, which traps particles down to 5 microns. The clean air then travels through the air outlet hose and the turbocharger air inlet pipe to the turbocharger compressor. After compression and cooling, the air enters the engine cylinders for combustion.
A properly sealed intake system is essential for preventing unfiltered air from bypassing the filter, which would cause rapid engine wear. Fleet managers with over 100 trucks report 70% fewer intake system failures after switching to genuine Howo components, and long-haul operators notice improved consistency in engine diagnostics and fewer dashboard warnings [3†L36-L39].
The air inlet pipe and turbocharger air inlet pipe are manufactured from injection molded polypropylene with UV stabilizers. The flexible bellows and intake hoses are made from EPDM and silicone rubber, respectively, with fabric reinforcement. The air filter housing is constructed from impact resistant ABS plastic with a sealed cover that uses a foam gasket to prevent dust ingress.
All clamps are stainless steel or zinc plated steel. The rubber cushion blocks are made from natural rubber with a Shore A hardness of 60, providing optimal vibration isolation while maintaining dimensional stability.
Dust entering the engine starts with poor filter seals, allowing bypass, and overly coarse filter media that allows the finest dust to pass through. It only takes 1 teaspoon of fine dust to destroy an engine, which then wears down the cylinder liner and piston, pushing down past the rings and into the engine oil [7†L35-L39]. Every component is tested for dimensional accuracy before leaving the factory.
Begin by removing the old intake components. Clean the mounting surfaces on the chassis and engine. Install the rubber cushion blocks on the air filter bracket using the hexagon nuts M10 and large washers. Mount the air filter assembly to the bracket using the hexagon bolts with flange M10. Connect the air inlet pipe to the bellows, securing with the worm drive hose hoops.
Install the bellows to the air filter inlet using the hose clamp N05074. Connect the air outlet hose to the filter outlet and the turbocharger inlet pipe using the worm drive clamps. Secure the turbocharger inlet pipe to the engine using the rear suspension locking cushion block and the hexalobular socket pan head screws.
Install the lateral air inlet and its bracket using the hexagon bolts and flange nuts. Finally, attach the baffle inside the air filter housing and secure the housing cover with the tapping screws and large washers. Torque all fasteners to the specifications in the service manual.
This intake system is designed for the HOWO MAX 4X2 with MC07, MC11, or MC13 turbo diesel engines [4†L4-L7]. It fits all cab variants from 2018 onward. The turbocharger air inlet pipe is sized for the stock turbocharger compressor inlet;
if an upgraded turbo has been installed, verify compatibility before ordering. The air filter assembly is also compatible with the standard HOWO replacement filter element, part number WG9525194508FILT. The system is also compatible with MC07, MC11, MC13 engine spare parts including exhaust valve seat rings and other components [4†L6-L7].
Inspect the intake system every 20,000 km or during each engine service. Check the air filter element for dust loading; replace if the restriction indicator shows red. Inspect all hoses and the bellows for cracks or swelling. A restricted or clogged air intake system can disrupt the air fuel mixture and result in misfires [3†L8-L11]. Check the worm drive clamps for tightness; they should be snug but not overtightened. Inspect the rubber cushion blocks for cracking or hardening; replace if any damage is found.
Check the air filter housing cover seal for damage; replace the gasket if it leaks. The air intake system must not leak, as any leak, no matter how small, may result in internal engine damage due to abrasive dirt and dust entering the intake system [7†L24-L26].
Always use genuine HOWO replacement filter elements, as aftermarket filters may not have the same efficiency and could allow dust into the engine. When servicing the intake system, always replace the gasket rather than reusing the old one, and inspect mating surfaces for damage or warping [3†L31-L34].
If the engine lacks power or emits black smoke, a restricted air filter may be the cause. Check the filter element and replace if dirty. Poor filtration due to poor quality or split filters allows damaging airborne particles into the intake system, which will affect both the turbocharger and the engine itself. Conversely, if the filter becomes clogged with dirt and is not changed, the decreased airflow reduces combustion efficiency leading to smoking and bore washing because of excess fuel [7†L40-L46].
If the engine exhibits a whistling sound under acceleration, inspect the intake hoses and bellows for leaks. Use a length of hose as a listening tool to locate leaks. If the turbocharger inlet pipe is loose, check the hose clamp and the rear suspension locking cushion block. If the air filter housing cover is difficult to close, the filter element may be misaligned or the wrong size.
In case of water ingestion in wet conditions, check the air inlet assembly for cracks or missing seals. Operators should include valve clearance checks during scheduled 30,000 km maintenance intervals, as early detection of abnormal wear patterns can indicate underlying issues requiring immediate attention [3†L19-L22].
Aftermarket intake hoses are often made from lower grade rubber that hardens and cracks after a few years of heat exposure. The clamps may not be stainless steel and will rust, making them difficult to remove. The rubber cushion blocks may be too soft, allowing excessive vibration that fatigues the air filter housing.
The air filter assembly from generic suppliers may not have the correct sealing surfaces, allowing dust to bypass the filter element. Aftermarket filters often use lower grade steel that wears rapidly, and the bearing may be plastic instead of sintered bronze, leading to early failure.
Genuine HOWO intake system components are made from the highest quality materials and are designed to fit exactly as the original. The small additional cost of genuine parts is far outweighed by the risk of engine damage from unfiltered air.
The intake system is manufactured in an ISO 14001 certified facility. The plastic components are made from recyclable polypropylene and ABS. The rubber hoses are recyclable through specialized processes. The packaging consists of a reinforced cardboard box with foam inserts to protect the plastic parts. All packaging materials are recyclable.
The complete intake system can be ordered using the master assembly number YZ952519005000. Individual components are listed with their own material encodings in the parameters table. Authorized HOWO dealers in Nigeria stock these genuine parts. For fleet orders of five or more complete intake systems, volume discounts are available. Always provide your vehicle’s VIN to confirm compatibility.
Fleet managers who have installed this genuine HOWO intake system report a significant reduction in engine dusting failures. The air filter assembly’s sealing design has proven effective even on the dustiest laterite roads. The silicone outlet hoses have shown no signs of cracking after two years of service. The vibration isolation provided by the rubber cushion blocks has eliminated the cracking of intake pipes that was common with aftermarket brackets.
Many operators have adopted this intake system as their standard replacement part, citing the ease of installation and the peace of mind that comes with using genuine HOWO components. Long-haul operators notice improved consistency in engine diagnostics and fewer dashboard warnings after switching to genuine Howo components [3†L36-L39].
The intake system is shipped in a heavy duty cardboard box measuring 80cm x 60cm x 50cm, weight 15 kg. The air filter assembly is wrapped in plastic to prevent dust ingress. The hoses and bellows are coiled without kinking. Store the components in a dry indoor area. Do not stack heavy items on top of the box. The shelf life is three years when stored properly. Avoid exposure to direct sunlight or ozone generating equipment.
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