Support

Rear mudguard brackets provide the load-bearing connection between the mudguard, chassis, axle assembly or a specific bodywork bracket. They must position the mudguard securely around the tyre, even under chassis torsion, vibration, high wheel travel and exposure to splashing water, snow, mud and stone impact. On MAN TGL, TGM, TGA, TGS, TGX and TG3, Mercedes Atego, Axor, Actros, Arocs and Econic, as well as on rear axles with single or tandem configurations, brackets vary considerably in length, bend angle, mounting surface and material design. Vehicle-specific mudguard brackets are also available for MAN TGE and Mercedes Sprinter. Therefore, always identify brackets using the vehicle chassis number; visual comparison or selection by model name alone is never sufficient.

Rear mudguard brackets are generally designed as galvanised or coated steel profile brackets, round tube supports, or reinforced plastic and composite carriers. Steel versions offer high bending rigidity and are suitable for heavy mudguard sections on tractor units, tippers and vehicles used on construction sites. Plastic or composite brackets reduce corrosion and weight, but may crack around bolt holes or clip connections when overloaded. Some systems use adjustable telescopic supports, spacer bushes, rubber vibration dampers or clamping blocks to compensate for tolerances in chassis width and mudguard radius.

The correct version depends on the rear axle configuration, single or twin tyres, wheelbase, chassis height, rear overhang and the shape of the fitted mudguard. For example, a bracket for a tractor unit with wheel protection above the drive axle will not necessarily fit a rigid truck with a tandem axle set or a vehicle with a specific rear axle construction. In addition to the part number, check the centre-to-centre distance of the mounting holes, the diameter and thread class of the fasteners, the installation angle and the clearance between tyre, mudguard and suspension travel. A bracket that is too short or incorrectly bent can cause tyre contact at full compression; a support that is too long leads to resonance and cracking.

The most common defects are corrosion on steel brackets, worn bolt holes, fatigue cracks at welds, bent tube profiles and detached rubber dampers. Especially during road salt exposure and intensive off-road work, corrosion damages the coating around clamping connections and mounting plates. A rattling mudguard, visible misalignment, recurring breakage of plastic mudguards or scuff marks on tyres often indicate a defective bracket assembly rather than solely a damaged mudguard.

Park the vehicle on level ground, secure it against rolling away and, if necessary, unload the axle in accordance with workshop instructions. First visually inspect for rust, deformation and hairline cracks. Then measure the hole diameters with vernier calipers and the distance between the mounting points with a tape measure. Compare the left and right sides: a difference in mudguard height or in the distance to the tread indicates a bent carrier, displaced mounting plate or worn mounting rubber. With air suspension, also check at the vehicle's ride height that the tyre has sufficient clearance during compression. Retighten mounting bolts using a calibrated torque wrench according to the vehicle specification; overtightening may damage plastic mudguards, insulating bushes and vibration dampers.

Replace a bracket in the event of deep corrosion, a visible kink, oval bolt holes, cracked welds or when the original mudguard position can no longer be reproduced. Local straightening of load-bearing steel brackets is only advisable if there is no material thinning, cracking or damage to the corrosion protection. In practice, replacement is usually more reliable, especially when the vehicle frequently operates on poor roads or construction sites.

Fit new brackets using suitable bolts, lock nuts, washers and any rubber buffers required. Clean the mounting surfaces on the chassis, protect bare metal against corrosion and replace corroded fasteners at the same time. After installation, check symmetry, tyre clearance and the stability of the complete mudguard system. Correct fitment and technical support with identification help minimise downtime and repeated mudguard damage.