The part system for the HOWO MAX 4X2 tractor is an integrated assembly of precision‑engineered components designed to secure, support, and connect various chassis and cab elements. This genuine HOWO bracket kit includes the elastic beam, connecting plate, high‑strength bolts, locking nuts, and washers – all engineered to work together as a robust mounting solution. When you choose authentic Howo Parts, this bracket assembly guarantees OE fitment, exceptional load‑bearing capacity, and long‑term reliability. Below are detailed descriptions of every component included with this bracket kit.
The elastic beam is a flexible steel member that absorbs vibration and accommodates minor misalignments in The part assembly. This component is made from high‑grade spring steel with a corrosion‑resistant coating, designed to provide controlled flexibility while maintaining structural integrity. The elastic beam is a critical part of The part, reducing stress on rigid connections and extending the service life of mounted components.
The connecting plate is a heavy‑duty steel bracket that links the elastic beam to the chassis or other structural members. This bracket component is laser‑cut from 8mm thick HSLA steel with a zinc‑nickel coating, featuring precision‑drilled holes that match the bolt pattern of the elastic beam. The connecting plate distributes loads evenly and provides a stable interface for The part assembly.
Four M14x1.5 hexagon head bolts are supplied to secure the connecting plate and elastic beam to the vehicle frame. These bracket bolts are grade 10.9 with a zinc‑plated finish, offering a tensile strength of 1,040 MPa. The fine pitch thread provides high clamping force and resistance to loosening under vibration. Each bolt is torqued to 180 Nm, ensuring a secure, long‑lasting connection.
Four type 2 hexagon nuts with M14x1.5 thread are used in conjunction with the M14 bolts to secure The part components. These nuts are made from high‑strength steel with a nylon locking insert, providing a positive hold that resists loosening due to vibration. The type 2 design offers increased height for greater thread engagement, ensuring The part assembly remains firmly fastened.
Two spring washers are supplied to provide a locking action under the M16 bolts. These split‑coil washers are made from hardened spring steel with a phosphate coating, maintaining tension and preventing the fasteners from backing out. The spring washer is an essential part of The part, ensuring the integrity of the connection under dynamic loads.
Two M16x1.5 hexagon head bolts are used for the main attachment points of The part assembly. These bolts are grade 10.9 with a zinc‑nickel coating, torqued to 250 Nm. The fine pitch thread provides excellent load‑carrying capacity, making these bolts ideal for securing The part to heavy‑duty mounting points on the chassis.
Two M16x1.5 hex bolts with serrated flanges are provided for applications where extra locking force is required. The serrations bite into the mating surface, providing a positive lock that prevents loosening under severe vibration. These bracket bolts are grade 10.9 and are torqued to 250 Nm, ensuring a secure, maintenance‑free connection.
Two M16x1.5 flange nuts with toothed faces are used with the M16 bolts to complete The part fastening system. The toothed flange provides a positive locking action, and the integral flange distributes the clamping load evenly. These nuts are made from grade 10.9 steel and are torqued to 250 Nm, ensuring The part remains securely attached throughout the vehicle’s service life.
Bracket – genuine HOWO complete mounting and connecting hardware kit for MAX 4X2
This bracket kit includes the elastic beam, connecting plate, and all fasteners – everything needed to create a secure, flexible mounting point. The part system is designed to handle the demanding loads of heavy‑duty trucking.
All bolts and nuts in this bracket kit are grade 10.9 with fine pitch threads, providing exceptional clamping force and resistance to loosening. The serrated flange bolts and toothed nuts offer a positive locking action for maximum reliability.
All steel components of this bracket are coated with zinc‑nickel or zinc plating, providing excellent protection against road salt, moisture, and chemicals. The part system is built to withstand the harshest under‑chassis environments.
This bracket kit is manufactured to SINOTRUK’s original specifications, guaranteeing that the elastic beam and connecting plate align perfectly with the chassis mounting points. Installation is straightforward and requires no modifications.
The part assembly is designed to provide a flexible yet strong connection between the chassis and various mounted components. The elastic beam absorbs shock loads and accommodates chassis flex, reducing stress on rigid mounts.
The connecting plate distributes the load across a wide area, preventing localised deformation. The combination of M14 and M16 fasteners with locking nuts and spring washers ensures that The part remains secure under the most demanding conditions. The part system is engineered to withstand forces up to 50 kN in tension and compression, making it suitable for applications such as suspension mounts, cab supports, and accessory brackets.
Before installation, ensure the mounting surfaces are clean and free from rust. Position the elastic beam against the chassis and align it with the existing holes. Place the connecting plate on the opposite side of the chassis frame. Insert the M14 bolts through the assembled bracket and hand‑tighten the M14 nuts. Torque all M14 fasteners to 180 Nm in a crossing pattern.
Install the M16 bolts and serrated flange bolts for the main attachments, torquing to 250 Nm. Fit the spring washers under the bolt heads where specified. Finally, install the toothed flange nuts and torque to 250 Nm. Check that The part is aligned and that all fasteners are secure. The part installation is now complete.
If The part produces a rattling noise, check the torque of all fasteners; retighten if necessary. A loose bolt can cause the elastic beam to move, leading to wear and eventual failure. If The part appears bent or deformed, inspect the connecting plate for cracks and replace if damaged. Corrosion on the fasteners can be prevented by applying anti‑seize compound to the threads during installation.
If the spring washer has lost its tension, replace it with a new one. Always use genuine bracket components for repairs to maintain the original strength and safety standards.
Inspect The part system every 50,000 km or annually. Check all bolts and nuts for tightness; retorque if any are loose. Examine the elastic beam for signs of fatigue cracking, especially around the mounting holes.
Inspect the connecting plate for corrosion or deformation. If the vehicle operates in harsh environments, apply a rust‑proofing spray to The part components. Regular maintenance of The part ensures that mounted equipment remains secure and that the vehicle’s structural integrity is preserved.
This bracket kit is specifically designed for the HOWO MAX 4X2 tractor and is compatible with all production years from 2018 onward. The elastic beam and connecting plate are sized to fit the standard chassis rail dimensions.
The part kit is also suitable for SITRAK C7H and HOWO T7H models that share the same chassis architecture. It is not compatible with older A7 or WD615 models, which have different mounting hole patterns. Always verify your vehicle’s chassis type before ordering this bracket kit.
Aftermarket bracket components often use lower‑grade steel that lacks the required tensile strength, leading to deformation and failure under load. Generic fasteners may not meet the grade 10.9 specification, risking bolt stretch or shear. Non‑genuine elastic beams may not have the correct spring rate,
failing to absorb vibration and causing premature fatigue in connected components. A failed bracket can result in the detachment of critical parts,
creating a serious safety hazard. Genuine HOWO bracket components are manufactured to SINOTRUK’s exacting standards, using certified materials, precision‑formed shapes, and high‑grade fasteners. The small additional cost of a genuine bracket kit is insignificant compared to the safety and reliability it provides. For fleet operators, using genuine bracket kits ensures consistent performance and reduces the risk of costly breakdowns.
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