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Genuine SINOTRUK WG9925530058 intercooler hose for HOWO T7H, C7H & A7 trucks. OEM replacement for turbo-to-intercooler airflow
If your SINOTRUK HOWO is losing power, running hotter than usual, or triggering a “reduced engine performance” warning, don’t jump straight to the turbocharger — the issue might be simpler: a cracked or swollen intercooler hose, like the original WG9925530058 used across T7H, C7H, and A7 models.
This genuine SINOTRUK intercooler hose connects the turbocharger outlet to the intercooler inlet, carrying pressurized, hot air before it’s cooled and sent into the engine. It’s built to handle extreme conditions: temperatures up to 180°C, boost pressures over 2.5 bar, and constant vibration from heavy-duty hauling. Unlike generic rubber hoses that degrade quickly, this OEM unit features a triple-layer construction — inner EPDM liner for heat resistance, embedded polyester fabric for strength, and outer UV-stable silicone coating to prevent cracking.
Feature
Specification
Part Number
WG9925530058
Product Type
Intercooler Hose (Charge Air Pipe)
Position
Turbo Outlet to Intercooler Inlet
Inner Material
Heat-Resistant EPDM Rubber
Reinforcement Layer
Woven Polyester Fabric (x2)
Outer Coating
Silicone with Anti-Static Wire
Temperature Range
-40°C to +180°C (Peak)
Max Boost Pressure
2.8 bar
Hose Diameter
Ø63 mm (2.5″)
Length (Center-to-Center)
Approx. 420 mm
Clamp Type
OEM-Style Worm Drive (M16–M70)
Compatibility
SINOTRUK HOWO T7H, C7H, A7, ZZ1257 Series
Engine Models
MC11, MC13, D10, WD615
OEM Standard
Meets Q/01JZ007 & GB/T 7528-2020
Packaging
Shrink-Wrapped + Rigid Carton
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Always relieve boost pressure before working on the intake system. Disconnect the battery ground to prevent accidental ECU errors. Loosen the two hose clamps at each end of the old WG9925530058 hose using a 7mm socket or screwdriver. Carefully pull the hose off the turbo outlet and intercooler inlet — don’t pry with metal tools, which can damage soft couplings. Clean any oil residue or carbon buildup from the mating flanges. Install the new OEM hose by hand, ensuring it seats fully on both ends. Reuse only if clamps are in perfect condition; otherwise, replace with new OEM-style worm-drive clamps. Tighten to 2.5–3.0 Nm — over-tightening can crush the silicone-reinforced walls. After installation, inspect for kinks or twists. Start the engine and check for whistling noises under load — a sign of air leaks. Use soapy water on joints to detect small leaks.
