The part is a critical suspension component that controls spring oscillation and maintains tyre contact with the road on the HOWO MAX 4X2 tractor. This genuine shock ABSorber assembly kit includes the main damper units, mounting brackets, and all high‑strength fasteners required for a complete installation.
When you choose authentic Howo Parts, this shock ABSorber assembly guarantees OE fitment, superior ride comfort, and reliable damping performance. Below are detailed descriptions of every component included with this shock ABSorber assembly.
The shock absorber bracket assembly is a heavy‑duty steel mounting bracket that secures the upper end of the shock absorber to the chassis or frame rail. This shock ABSorber assembly component is precision‑formed from 8mm thick high‑strength steel with a corrosion‑resistant zinc‑nickel coating, featuring reinforced gussets to withstand the high forces generated during damping.
Two brackets are supplied, designed to align perfectly with the factory mounting points on the HOWO MAX 4X2 chassis. The bracket includes precision‑drilled holes that accept the M14 serrated flange bolts, ensuring a rigid, vibration‑proof attachment. A properly installed shock absorber bracket assembly is essential for maintaining correct shock geometry and preventing premature wear of the damper bushings.
Eight M14x1.5 hex bolts with serrated flanges are used to secure the shock absorber bracket assemblies to the chassis and the lower mounting points. These shock ABSorber assembly bolts are manufactured from high‑strength alloy steel with a property class of 10.9, providing a minimum tensile strength of 1,040 MPa.
The serrated flange bites into the mating surface, creating a positive locking action that prevents loosening under the severe vibration of heavy truck operation. The bolts have a zinc‑nickel coating that resists corrosion from road salt and moisture. When installing The part, these bolts must be torqued to 180 Nm to achieve the correct clamp load.
Reusing old bolts is not recommended, as the thread locking patch and serrations will have been compromised. The correct length and thread pitch (M14x1.5) ensure that the brackets are securely fastened without bottoming out. Using genuine shock ABSorber assembly bolts guarantees the correct grade and material properties for this safety‑critical application.
Eight M14x1.5 flange nuts with toothed faces are supplied to complement the serrated bolts. These shock ABSorber assembly nuts are made from the same high‑grade steel and feature an integral flange that acts as a built‑in washer, distributing the clamping load evenly. The toothed face provides additional locking action when tightened against the bracket, preventing the nut from backing off due to axle movement.
These nuts are torqued to 180 Nm and are designed for single‑use; they should be replaced if removed. The flange design eliminates the need for separate washers, simplifying installation and reducing the number of components that could be lost. The part relies on these nuts to maintain the correct preload on the bracket bolts,
ensuring the damper remains securely attached throughout the vehicle’s service life. Using genuine nuts ensures the correct hardness and thread fit, preventing galling or stripping during installation.
The part is the main damping unit that controls spring oscillation and absorbs road impacts. This shock ABSorber assembly contains a twin‑tube hydraulic damper filled with high‑viscosity oil and pressurised nitrogen gas, delivering consistent damping force across a wide temperature range. The piston rod is hard‑chromed for wear resistance, and the outer tube is powder‑coated black to resist corrosion. Two shock absorbers are supplied,
calibrated specifically for the HOWO MAX 4X2 suspension geometry and axle load. Each damper includes integrated rubber bushings at both ends to isolate noise and vibration. The part is designed to provide a balance between ride comfort and vehicle stability, reducing body roll and improving tyre contact with the road surface.
A worn shock absorber can cause excessive bouncing, reduced braking performance, and uneven tyre wear. Replacing a faulty unit with this genuine shock ABSorber assembly restores the original handling characteristics and enhances driving safety. The shock absorbers are supplied with the necessary mounting hardware and are ready for installation.
Four flat washers (Q401B16) are supplied for use under the bolt heads and nuts on the M16 fasteners. These shock ABSorber assembly washers are made from hardened steel with a zinc‑plated finish, providing a smooth bearing surface that prevents the bolt head from embedding into the bracket or damaging the mounting surface.
The washers distribute the clamping load over a larger area, reducing the risk of stress fractures in the brackets. They are essential for maintaining the correct torque and preventing loosening due to vibration. When installing The part,
these flat washers should be placed between the bolt head and the bracket, and between the nut and the bracket where required. Using the correct washers ensures that the fastener clamp load is maintained and that the shock absorber remains securely attached. The washers are reusable, but if they show signs of deformation or corrosion, they should be replaced with genuine shock ABSorber assembly components.
Four M16x1.5 hexagon head bolts are supplied in three different lengths (130mm, 120mm, and 100mm) to accommodate the various mounting positions of The part. These shock ABSorber assembly bolts are grade 10.9 with a zinc‑plated finish, torqued to 250 Nm. The longer bolts are used where the bracket thickness and spacer stack require additional length, while the shorter bolts are used for the lower eyelet mount.
Each bolt features a full thread and a hex head that allows for high‑torque tightening with a standard socket. The fine pitch thread (1.5mm) provides greater clamping force and resistance to loosening compared to coarse threads.
These bolts are essential for securing the shock absorber to the axle and chassis, and they must be replaced if they show signs of stretching or thread damage. Using the correct shock ABSorber assembly bolts ensures that the damper remains firmly attached, preventing dangerous detachment during operation.
Four type 2 hexagon nuts with M16x1.5 thread are used in conjunction with the M16 bolts to secure the shock absorber mountings. These shock ABSorber assembly nuts are made from high‑strength steel with a nylon insert or serrated flange to provide a self‑locking action. The type 2 design indicates a thicker nut that offers greater thread engagement and load‑carrying capacity.
These nuts are torqued to 250 Nm and are essential for maintaining the clamp load on the shock absorber eyelets. The nylon insert prevents loosening due to vibration, ensuring the shock absorber remains securely attached even under extreme off‑road conditions. Like the bolts,
these nuts are single‑use items and should be replaced if removed. Using genuine shock ABSorber assembly nuts guarantees the correct material strength and thread fit, preventing cross‑threading or stripping during installation.
shock ABSorber assembly – genuine HOWO complete suspension damping and mounting kit for MAX 4X2
This shock ABSorber assembly kit includes the main dampers, brackets, and every bolt, nut, and washer needed for installation. No additional hardware is required, making The part a comprehensive replacement solution for the HOWO MAX 4X2 suspension.
All bolts and nuts in this shock ABSorber assembly are property class 10.9, providing exceptional tensile strength and resistance to shear forces. The serrated flange bolts and toothed nuts offer positive locking, preventing loosening under severe vibration and maintaining suspension integrity.
The shock absorbers in this shock ABSorber assembly are tuned to the specific spring rates and axle weights of the HOWO MAX 4X2, providing optimal ride comfort and stability. The twin‑tube design ensures consistent damping performance over a wide range of operating temperatures.
All metal components in this shock ABSorber assembly are coated with zinc‑nickel or zinc plating, and the damper tubes are powder‑coated, providing excellent protection against road salt, moisture, and stone chips. This shock ABSorber assembly is built to withstand the harsh under‑chassis environment.
The part is mounted between the chassis frame and the axle, working in conjunction with the leaf springs or air suspension to control vertical wheel movement. When the vehicle encounters a bump, the spring compresses, storing energy. The shock absorber converts this kinetic energy into heat through hydraulic damping, dissipating it through the oil and gas charge.
This controlled resistance prevents the spring from oscillating continuously, ensuring that the tyre maintains contact with the road surface. The part also helps to control body roll during cornering and pitch during braking, improving vehicle stability and driver confidence. The brackets and fasteners of The part are engineered to withstand the high loads generated during damping, which can exceed 5,000 N.
A properly functioning shock ABSorber assembly is essential for maintaining tyre grip, braking efficiency, and overall ride quality. Worn shock absorbers can lead to increased stopping distances, uneven tyre wear, and driver fatigue. Replacing them with a genuine shock ABSorber assembly restores the original handling characteristics and ensures the safety of the vehicle and its occupants.
Before installation, raise the vehicle and support the axle securely. Remove the old shock absorbers and brackets. Clean the mounting surfaces on the chassis and axle. Install the shock absorber bracket assemblies onto the chassis using the M14 serrated flange bolts and toothed nuts, torquing to 180 Nm. Attach the lower end of the shock absorbers to the axle using the M16 bolts (with the correct length),
flat washers, and type 2 nuts, torquing to 250 Nm. Connect the upper end of the shock absorbers to the brackets using the remaining M16 bolts and nuts. Ensure that the rubber bushings are correctly aligned and that the shock absorber is not twisted.
Lower the vehicle and check that all fasteners are tightened to the specified torque. Test drive the vehicle over a rough road to verify the damping performance. The part installation is now complete. Always use new fasteners and follow the recommended torque values for a safe and reliable installation.
If the vehicle exhibits excessive bouncing or a floating sensation, the shock absorber may be worn or have lost gas pressure. Inspect The part for oil leaks or signs of physical damage. A knocking noise from the suspension may indicate loose bracket bolts or worn bushings; retorque all fasteners and inspect the bushings.
If the shock absorber does not return to its extended position, the internal valve may be stuck; replace The part. Uneven tyre wear can also be a symptom of faulty shock absorbers; replace The part and check the alignment. Always use genuine shock ABSorber assembly components for repairs to ensure correct fit and performance.
Inspect The part every 50,000 km or annually. Check for oil leaks, damaged rubber bushings, and loose fasteners. Retorque the mounting bolts to the specified values. If the vehicle is operated in severe conditions,
such as off‑road or heavy haulage, consider more frequent inspections. The shock absorbers themselves do not require servicing, but they should be replaced as a set when performance deteriorates. A worn shock ABSorber assembly can significantly affect vehicle safety and handling, so proactive replacement is recommended. Keep The part clean and free from road grime to prolong its service life.
This shock ABSorber assembly kit is specifically designed for the HOWO MAX 4X2 tractor and is compatible with all production years from 2018 onward. It fits both MC11 and MC13 engine variants and is suitable for vehicles with either leaf spring or air suspension configurations.
The kit is also compatible with SITRAK C7H and HOWO T7H models that share the same suspension mounting points. It is not compatible with older A7 or WD615 models, which use different shock absorber lengths and bracket designs. Always verify your vehicle’s suspension type before ordering The part.
Aftermarket shock absorbers often have incorrect damping rates, leading to poor ride quality, reduced stability, and increased stopping distances. Generic brackets may not align correctly, causing misalignment and premature bushing wear. Non‑genuine fasteners may not meet the required strength grade, risking failure under load.
A failed shock ABSorber assembly can cause loss of control, especially during emergency manoeuvres. Genuine HOWO shock ABSorber assembly components are manufactured to SINOTRUK’s exacting standards, using certified materials, precision‑valved dampers,
and high‑grade fasteners. The small additional cost of a genuine shock ABSorber assembly is insignificant compared to the safety and comfort it provides. For fleet operators, using genuine shock ABSorber assembly kits ensures consistent handling across the fleet and reduces the risk of suspension‑related breakdowns.
We are a heavy-duty truck parts store. Please leave your contact information and inquiries. We will respond within 12 hours.
