The urea tank and installation kit is essential for the Selective Catalytic Reduction system on the HOWO MAX 4X2 tractor. A complete urea tank and installation solution ensures proper storage and delivery of Diesel Exhaust Fluid to reduce NOx emissions.
This genuine HOWO urea tank and installation kit includes the urea tank, mounting brackets, bolts, nuts, washers, protective covers, and fastening belts. When you choose authentic Howo Parts, you receive a complete urea tank and installation package engineered specifically for the MAX 4X2 chassis.
The urea tank is a high density polyethylene container that stores Diesel Exhaust Fluid for the SCR aftertreatment system. This tank is molded to fit the specific mounting location on the HOWO MAX 4X2 frame rail, with an integral level sensor port and filler neck. The material is resistant to urea corrosion and UV degradation, ensuring long service life.
The tank includes a built in heating element for cold weather operation, maintaining DEF fluidity even at low temperatures. The 60 liter capacity provides sufficient fluid for extended driving range between refills, with consumption typically averaging 2 to 4 liters per 100 liters of diesel fuel used.
The hex bolt with serrated flange M14*1.5 is used to secure the urea tank bracket to the chassis frame. Two bolts of this type are supplied, each with a serrated flange that bites into the mounting surface to prevent loosening. The fine pitch thread provides superior vibration resistance, essential for maintaining clamp load on rough roads. The bolts are grade 10.9 with zinc flake coating for corrosion protection in underbody conditions.
Additional hex bolt with serrated flange M14*1.5 is provided for securing the urea pump bracket and other mounting points. Two bolts of this type are included, identical to the previous specification but used in secondary locations. The serrated flange eliminates the need for separate lock washers, simplifying assembly and reducing parts count.
The hex flange nut with teeth M14*1.5 is a locking nut with a toothed flange. Six nuts are supplied, matching the quantity of M14 bolts in the kit. The toothed flange bites into the steel bracket surface, providing positive locking action that resists loosening from vibration. These nuts are used on the opposite side of the bolts to complete the fastening assembly.
The type-1 hex nut M10 is a standard metric fine thread nut used for securing the DCU protective cover and other M10 fasteners. Three nuts are provided, each made from zinc plated steel. They are compatible with the M10 bolts included elsewhere in the urea tank and installation kit.
The hexagon nut with flange M10 is a flange type nut used for securing the urea tank cover and bracket connections. Two nuts are supplied, each with an integral flange that distributes clamping pressure over a wider area, protecting the plastic tank surface from damage.
The hex flange nut M6 is a small flange nut used for securing the DCU protective cover and other M6 fasteners. Four nuts are included, made from zinc plated steel. The small flange is suitable for limited clearance areas where a washer would not fit.
The plastic fastening belt is a nylon cable tie used to secure hoses and wiring harnesses to the urea tank brackets. Two belts are supplied, each 200mm long and rated for temperatures up to 85°C. They are UV stabilized to prevent degradation from sunlight exposure.
The hex head bolt M10 is a standard bolt with a full thread length used for mounting the DCU protective cover. One bolt is supplied, grade 8.8 with zinc plating, sized for the M10 threaded inserts on the cover mounting points.
The DCU protective cover is a plastic enclosure that shields the Dosing Control Unit from water, dust, and road debris. This cover snaps onto the bracket and is secured with the M10 bolts and nuts. The cover includes a foam gasket that seals against the bracket, preventing moisture ingress that could damage the sensitive electronic controller.
The hex bolt with serrated flange M14*1.5 (short version) is used for mounting the urea tank bracket to the frame in areas with limited access. Two bolts are included, identical to the longer bolts but with reduced shank length. The serrated flange provides the same locking capability as the other M14 bolts in the urea tank and installation kit.
The large washer is used under the hex flange nuts and bolts to distribute clamping pressure over plastic or thin metal surfaces. Eight washers are supplied, each with an outer diameter of 16mm and an inner diameter of 6.4mm. They are made from zinc plated steel and are reusable across multiple installations.
Urea tank and installation – complete genuine HOWO SCR system kit
| Material Encoding | Name |
|---|---|
| WG9525560051 – Urea tank | |
| ZQ1811475TF6 – Hex bolt with serrated flange M14*1.5 | |
| ZQ1811465TF6 – Hex bolt with serrated flange M14*1.5 | |
| ZQ32514T13F6 – Hex flange nut with teeth M14*1.5 | |
| ZQ340B10T13F6 – Type-1 hex nut M10 | |
| ZQ32010T13F6 – Hexagon nut with flange M10 | |
| ZQ32006T13F6 – Hex flange nut M6 | |
| 1.90003E+11 – Plastic fastening belt | |
| ZQ150B1035 – Hex head bolt M10 | |
| 712W41615-6201 – DCU protective cover | |
| ZQ1811445TF6 – Hex bolt with serrated flange M14*1.5 | |
| Q402B06 – Large washer | |
This urea tank and installation kit includes every bracket, fastener, and protective cover required for a complete DEF system installation. The tank, hardware, and DCU cover are matched to the HOWO MAX 4X2 frame, ensuring perfect alignment and leak free operation of the SCR system.
The kit includes serrated flange bolts and toothed flange nuts that lock into the mounting surface, preventing loosening from chassis vibration. The large washers protect plastic components from damage while maintaining clamp load.
The urea tank is molded from UV resistant HDPE with integrated heating element mounts. The material withstands the chemical properties of Diesel Exhaust Fluid and temperature fluctuations from -40°C to +85°C, ensuring reliable DEF storage in all climates.
All brackets and fasteners in this urea tank and installation kit are designed for the HOWO MAX 4X2 chassis. The DCU protective cover snaps directly onto the bracket, and the M14 bolts align with factory threaded holes, eliminating the need for drilling or modification.
The urea tank stores Diesel Exhaust Fluid, a 32.5% solution of high purity automotive urea in deionized water. When the engine is running, a dosing pump draws DEF from the urea tank through a filter and injects it into the exhaust stream upstream of the SCR catalyst.
The heat of the exhaust converts the DEF into ammonia, which reacts with nitrogen oxides to produce harmless nitrogen gas and water vapor. The urea tank and installation kit ensures that the DEF supply is maintained reliably, preventing SCR system faults and emission compliance issues. The tank includes a level sensor that alerts the driver when the fluid level is low, typically providing enough warning for 800 to 1600 kilometers of additional driving before refill is required.
The urea tank is manufactured using rotational molding of linear low density polyethylene, producing a seamless, stress free container that will not leak at weld lines. The material meets ISO 22241 compatibility requirements for Diesel Exhaust Fluid storage.
The tank neck includes a built in filler strainer that prevents debris from entering the tank during refilling. The mounting brackets are fabricated from hot rolled steel with e coat finish, providing 500 hours of salt spray resistance. All fasteners are zinc plated or zinc flake coated, with the M14 bolts receiving additional thread locking compound to prevent loosening.
Before starting, ensure the vehicle is parked on a level surface and the engine is cool. Disconnect the battery ground cable. Remove the old urea tank and mounting components. Clean the frame mounting area thoroughly. Position the new urea tank onto the chassis bracket. Install the hex bolt with serrated flange M14*1.5 through the bracket holes, using the hex flange nut with teeth M14*1.5 on the opposite side. Torque the M14 bolts to 45 Nm in a crossing pattern. Install the remaining bracket bolts for the pump and lines.
Attach the DCU protective cover using the hex head bolt M10 and hex flange nuts M10, torquing to 20 Nm. Secure hoses and wiring harnesses with the plastic fastening belts. Reconnect the battery and fill the urea tank with fresh DEF. Start the engine and verify that no fluid leaks are present around the tank or fittings.
This urea tank and installation kit is designed specifically for the HOWO MAX 4X2 tractor with MC07, MC11, or MC13 engines and Euro 5/Euro 6 aftertreatment systems.
It fits both standard day cab and sleeper cab variants. The kit is compatible with the Bosch 2.2 urea pump system used on recent production vehicles. For older HOWO models, verify the urea pump type and bracket spacing before ordering. The DCU protective cover is designed for the DENSO DCU used in the most recent production runs.
Inspect the urea tank and installation every 50,000 kilometers. Check the tank for any cracks or leaks, particularly around the filler neck and level sensor mounting. Look for crystalized DEF around the filler cap, which indicates a loose seal or cracked neck. Inspect the mounting bolts for tightness; retorque M14 bolts to 45 Nm if needed. Check the DCU protective cover for cracks or loose fit.
Examine the plastic fastening belts for signs of weathering and replace if brittle. If any component of the urea tank and installation shows damage, replace it immediately with a genuine HOWO part to prevent SCR system contamination or failure.
If the SCR warning light illuminates, check the urea tank fluid level first. If the tank is full, inspect the level sensor wiring for damage. Crystalline deposits around the tank cap indicate a loose seal, which can allow moisture to enter and dilute the DEF. If the DEF quality sensor detects contamination, the entire urea tank must be drained and refilled with fresh fluid.
A loose DCU protective cover can allow water to enter the controller, causing intermittent faults. If the pump or injector fails, inspect the urea tank for internal debris that may have passed through the filter. Always use genuine HOWO replacement parts for any repairs to the urea tank and installation system.
Aftermarket urea tanks often use lower grade plastic that becomes brittle after a few years of UV exposure, leading to cracking and fluid leaks. The mounting brackets may be fabricated from thinner steel that flexes under vibration, causing stress on the tank fittings. Generic fasteners may not have the correct corrosion protection, leading to seized bolts that are difficult to remove.
The DCU protective cover may not seal properly, allowing water and dust into the controller. The genuine HOWO urea tank and installation kit uses certified materials that meet the exact specifications of the original equipment, ensuring the same durability and performance as the factory installed components. The small additional cost of genuine parts is far outweighed by the risk of SCR system damage from contaminated or leaking DEF.
This urea tank and installation kit is designed to support Euro 5 and Euro 6 emission standards. The SCR system reduces NOx emissions by up to 95% compared to untreated exhaust, helping vehicles comply with environmental regulations in Nigeria and other African countries that have adopted Euro emission standards. The urea tank is designed to prevent leaks that could allow DEF to enter the environment.
The DCU protective cover keeps the control unit dry, preventing faults that could cause increased emissions. By using genuine urea tank and installation components, fleet operators demonstrate a commitment to environmental responsibility and regulatory compliance.
This urea tank and installation kit includes all components listed in the parameters table. The complete kit can be ordered using the master part number, or individual components can be purchased separately using their material encodings. Authorized HOWO dealers in Nigeria, including locations in Lagos, Kano, Port Harcourt, and Abuja, stock these genuine parts for immediate availability.
For large fleet orders, volume discounts and expedited shipping are available. Always provide your vehicle’s VIN when ordering to ensure compatibility with the urea tank and installation kit. Each component is backed by a 12 month warranty against manufacturing defects.
Fleet managers who have installed this urea tank and installation kit report a significant reduction in SCR related downtime. The complete kit eliminates the need to source individual brackets and fasteners separately, saving workshop time.
The vibration proof locking hardware has solved the problem of loosening bolts that was common with aftermarket fasteners. The DCU protective cover has prevented water damage to controllers on vehicles operating in coastal areas. Many operators have standardized on this genuine urea tank and installation kit for all HOWO MAX 4X2 tractors in their fleets, citing the improved reliability and the peace of mind that comes with using genuine parts.
The urea tank and installation kit components are shipped in two cartons: one for the urea tank and one for the hardware and protective cover. The tank is wrapped in bubble wrap to prevent scratches. The fasteners are packaged in sealed poly bags with labels.
The DCU protective cover is in a foam lined box. Store all components in a dry indoor area. Do not stack heavy items on the urea tank, as this could deform the plastic. The shelf life is three years when stored properly. If the tank is stored empty, keep the cap installed to prevent dust ingress.
We are a heavy-duty truck parts store. Please leave your contact information and inquiries. We will respond within 12 hours.
