WG9761450001 Rear Brake Drum

WG9761450001 is a rear brake drum for Sinotruk HOWO and Sitrak heavy trucks, a key brake safety part. It works with brake linings to produce friction and stop the truck. Built from tough alloy grey cast iron with good heat dissipation. It resists high heat and cracks when hauling heavy loads or driving downhill on rough roads. It fits OEM sizes perfectly, runs balanced and wears evenly with direct installation. Suitable for HOWO T7H, T5G, TX, MAX, Sitrak C7H, G7 6×4/8×4 tractors and dump trucks equipped with MCP16 MAN rear axles.

① Applicable Vehicles: Fits SINOTRUK heavy-duty trucks, mainly HOWO and Sitrak series vehicles with MCP16 16-ton wheel-reduction MAN rear axles, including long-distance tractors, muck dump trucks, engineering transport vehicles and matching heavy construction machinery with identical braking system layout.

② Adaptable System: Perfectly matched with factory original brake shoes, wheel hubs and rear axle assemblies. Consistent with stock braking components on installation size and friction surface parameters for bolt-on direct replacement without cutting, drilling or any secondary modification.

③ OE Reference Number: WG9761450001

④ Interchangeability: Manufactured strictly to OEM precise dimensions, including overall height, inner friction bore diameter, flange thickness and mounting hole distribution. Direct swap with original brake drums, fast disassembly and assembly, effectively cutting vehicle maintenance time and labor costs.

⑤ Value-added Service: We confirm full compatibility by verifying your truck model, axle type and VIN code. We also provide professional guidance for installation, dynamic balance inspection and regular maintenance tips, effectively avoiding premature cracking, eccentric wear and brake shaking caused by improper assembly or daily use.

We produce this brake drum with high-grade alloy gray cast iron mixed with optimized carbon-silicon-manganese ratio, followed by integral high-temperature quenching and tempering heat treatment. The dense uniform metallographic structure greatly boosts thermal resistance, impact resistance and wear resistance. The thickened cylinder wall and built-in heat dissipation grooves quickly export braking heat, effectively preventing thermal deformation and thermal cracking during continuous heavy braking. The inner friction surface retains stable hardness without local softening under long-term high temperature. The thickened outer flange resists impact and rust erosion from muddy, dusty chassis environments, handling frequent heavy loading, bumpy road vibration and repeated emergency braking steadily. No deformation, eccentric wear or brake fading occurs even after long-cycle continuous operation, keeping consistent friction efficiency for reliable heavy-duty braking safety.

The inner friction bore and flange mounting surface adopt CNC precision fine boring processing to guarantee ultra-smooth contact surface and perfect circularity, eliminating brake shaking and abnormal noise during operation. All mounting holes are one-time precise drilling with uniform aperture and verticality to ensure flat attachment with wheel hub. The whole brake drum undergoes anti-rust paint spraying and anti-oxidation surface treatment. It stays stable in dusty, muddy and high-vibration chassis environments, resisting surface corrosion, local hardening and performance failure after long-term service. Each finished unit passes dynamic balance calibration to avoid unbalanced rotation during high-speed driving.

We adopt mature one-piece precision casting and integral heat treatment technology to make the brake drum solid and long-lasting. All critical dimensional tolerances are strictly controlled in production to fully match original factory installation interfaces. Every finished brake drum undergoes multi-item strict inspections: high-temperature thermal shock test, dynamic balance test, friction surface hardness test and fatigue aging cycle test. Every production batch gets full screening to eliminate defective products. We follow complete OEM production standards, so our brake drums reach identical braking performance and service life as genuine original parts.

We run automated casting, machining and inspection production lines with professional full-set testing equipment. Our stable monthly output and abundant spot inventory fully support wholesale distribution and large-volume export orders worldwide. We also provide customized processing for special dimensional specifications and sample supply service, meeting purchasing demands of global spare parts dealers, repair garages and vehicle manufacturers.

Q: What advantages make this brake drum better than ordinary generic brake drums?

A: It is cast from special alloy gray cast iron with complete heat treatment and thickened heat dissipation structure, far stronger in high temperature resistance and crack resistance than low-cost ordinary brake drums. It withstands continuous heavy braking heat impact and long-term road vibration, avoiding thermal cracking, eccentric wear and brake power attenuation. Precision CNC machining and dynamic balance treatment deliver smooth, shake-free braking performance, eliminating common issues like weak braking and abnormal noise.

Q: Is the quality reliable? How long is its service life?

A: Every single piece is manufactured to full OEM standards and tested individually for heat resistance, dynamic balance and anti-fatigue performance. With outstanding wear and thermal shock resistance, it normally serves 2–3 years under standard maintenance, perfectly matching long-haul logistics and daily heavy engineering transport scenarios.

Q: What benefits will you gain after replacement?

A: It restores stable, linear braking power to guarantee safe vehicle stopping. It solves typical failures such as brake shaking, partial wear and high-temperature brake fading, protects matched brake shoes and wheel hub assemblies, and reduces subsequent maintenance replacement costs. Meanwhile, it improves overall driving stability and braking safety for fully loaded heavy trucks.

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