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WG9925549130
Sinotruk HOWO
| Attribute | Description |
|---|---|
| Official Name | Exhaust Flexible Pipe / Metal Hose Assembly |
| Common Names | Exhaust Bellows, Flex Pipe, Exhaust Soft Connector |
| OEM Brand | SINOTRUK (China National Heavy Duty Truck Group) |
| Part Number | WG9925549130 |
| Material Composition | - Inner layer: Stainless steel corrugated tube (SUS304/SUS321) - Middle layer: High-pressure resistant convoluted core - Outer layer: Braided stainless steel wire mesh for strength and heat protection |
| Flange Material | Carbon steel or stainless steel with anti-rust coating |
| Weight | Approx. 3.5 kg – 4.5 kg |
| Surface Finish | Natural metal / sandblasted; no paint (heat-resistant design) |
| Certification | Complies with ISO 9001, TS16949, and China VI/Euro VI emission system requirements |
| Origin | Jinan, Shandong Province, China |
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Verify correct part: Confirm WG9925549130 matches your engine and chassis configuration.
Inspect new unit: Check for damaged braiding, dents in the bellows, or loose flanges.
Identify flow direction: If marked with an arrow (→), align with exhaust gas flow (from engine to tailpipe).
Prepare mounting area: Clean mating surfaces; replace old clamps and gaskets.
Position the Flex Pipe:
Hold in place between turbo outlet and muffler inlet.
Ensure no twisting, stretching, or pre-loading — install in neutral position.
Align Flanges:
Match bolt holes precisely.
Do not force misaligned pipes — adjust brackets instead.
Install Seals & Clamps:
Place new VG1246110019 gasket on both sides.
Secure with WG9925540003 V-clamp or equivalent.
Torque Fasteners:
Use calibrated wrench.
Torque to 25–30 N·m (refer to service manual).
Avoid over-tightening — can crush bellows or warp flanges.
Final Inspection:
Visually check alignment.
Start engine and inspect for leaks (listen for hissing or whistling sounds).