Premium-quality Rubber Dumper Howo engineered for extreme durability. Trusted by fleets worldwide — experience zero compromise with certified Sinotruk HOWO components. Your journey to unmatched performance starts here.
The rubber dumper howo (also known as a rebound buffer or axle bumper) is a critical suspension component that prevents metal‑to‑metal contact between the axle and frame during heavy articulation. As a genuine Sinotruk Truck part, the rubber dumper howo absorbs massive impacts, reduces chassis stress, and protects leaf springs from over‑compression. Whether you operate a HOWO dump truck, T7H tractor, or mining hauler, these durable rubber buffers extend the life of your suspension system and improve ride quality.
Made from high‑grade natural rubber with steel reinforcements, the rubber dumper howo resists tearing, weathering, and oil contamination. It is a direct replacement for original parts WG9725520025, WG9725520026, and AZ9631523182. Stop bottoming out and axle damage – upgrade to new rubber dampers today.
Prevents the axle housing from slamming into the chassis rail during maximum articulation, eliminating costly structural damage.
Compresses progressively under load, reducing peak impact forces by up to 40% compared to steel‑to‑steel contact.
Natural rubber compound with steel reinforcement rings resists tearing, ozone cracking, and oil swell – lasts 500,000+ km.
Pre‑drilled mounting holes align with factory brackets. No special tools required – replace in under 30 minutes.
| Parameter | Specification |
|---|---|
| Material | Natural rubber (NR) + steel reinforcement plates, Shore A hardness 65±5 |
| Dimensions (standard) | 70mm (length) × 80mm (width) × 50mm (height) |
| Mounting Holes | 2 × Φ14 mm, 112mm center distance |
| Max Compressive Load | 25,000 N (≈2500 kg per dumper) |
| Operating Temperature | -40°C to +90°C |
| Tensile Strength | ≥ 18 MPa |
| Oil Resistance | Good (resists mineral oils and diesel splash) |
HOWO 371 / 420 / T7H (all years)
Use WG9725520025 (front) and WG9725520026 (rear). Direct replacement for worn or cracked rubber bumpers.
SITRAK C7H, TH7, TX (Euro V/VI)
Requires WG9725520030 with progressive spring rate. Also fits some SITRAK off‑road chassis.
“The old rubber dumper on my Howo 371 had disintegrated. The new rubber dumper howo fixed the metal‑to‑metal clunking over speed bumps. Great quality.”
– Diego, Owner‑Operator, Peru“We replaced all eight rubber dumpers on our T7H fleet. Now the ride is much smoother, and the chassis no longer makes banging noises on rough roads.”
– Ahmed, Fleet Mechanic, UAE“The mining‑spec dumper (AZ9631523182) is twice as thick as the original. Perfect for our heavily loaded dump trucks. No more bottoming out.”
– Suresh, Mine Maintenance, India“Fast delivery to Russia. These rubber dumpers are exactly the same as the originals. Will order again.”
– Viktor, Fleet Supervisor, RussiaWhy Neglecting Your Rubber Dumper Howo Leads to Expensive Repairs – The rubber dumper is often overlooked during routine maintenance, yet its failure can cause catastrophic chassis damage. When the rubber dumper disintegrates, the axle travels beyond its intended limit, slamming into the frame rail. This impact bends shock absorber mounts, cracks leaf spring hangers, and can even deform the chassis. Our rubber dumper howo units are manufactured using natural rubber with high tear strength and steel‑reinforced eyelets for secure bolting. We offer both standard hardness (Shore 65) for on‑road use and extra‑hard (Shore 75) for mining and logging.
The mining version (AZ9631523182) is 20% thicker and resists permanent set even after severe overloads. Installation is straightforward: remove the old dumper, clean the mounting surface, and bolt the new one using M12 bolts torqued to 80 Nm. For fleets, we recommend inspecting dumpers every 50,000 km and replacing at the first sign of cracking. A set of eight dumpers (front and rear axles) costs less than a single hour of frame repair. Protect your investment – order genuine rubber dumper howo from our global stock. All units come with a 12‑month warranty and free shipping on bulk orders.
Need a custom dumper for a special application? Contact our engineering team with your vehicle weight and suspension travel. We can supply bespoke rubber dampers in any hardness or size. Genuine rubber dumper howo – the silent guardian of your suspension system.
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