Date: Sep 02, 2026
Recently, we received an inquiry from one of our overseas heavy‑truck repair partners requesting SITRAK C7H exhaust pipe parts. Due to a modified character within the vehicle VIN code, our internal parts database could not pull up the matching OEM part number directly. This real‑world case reminds us how critical proper exhaust‑system upkeep is for SITRAK C7H fleets operating across global markets.
A damaged exhaust pipe will trigger a series of secondary harms to the complete engine exhaust system. Leaks, cracks, corrugated‑section rupture and heat‑shield failure can result in exhaust‑gas backpressure anomalies, turbocharger efficiency loss, higher fuel consumption, abnormal exhaust temperatures and even further component burnout. For heavy‑duty trucks running long‑hour operations in mining, construction and intercontinental haulage scenarios, early exhaust‑pipe failure will bring unexpected downtime and expensive repair costs for end‑users and repair workshops.
Common SITRAK C7H Exhaust Pipe Faults
Bellows / flexible corrugated section cracking Vibration from engine operation is the leading cause. The flexible corrugated segment absorbs engine shaking; prolonged fatigue will create splits and exhaust gas leakage.
Thermal‑insulation wrapping damage & peeling off High‑temperature cycles plus road grit abrade the heat‑resistant wrapping material. Once damaged, surrounding wiring and hoses face overheating risk.
Flange joint air leakage Loose clamps, aged gaskets or deformed connecting flanges cause exhaust blow‑by, accompanied by loud exhaust noise.
Corrosion and perforation Condensation and corrosive exhaust by‑products gradually erode pipe walls, generating holes.
Practical Daily Maintenance Suggestions for Global Repair Garages
Perform visual inspection of the full exhaust pipe assembly during each routine service. Check bellows for cracks, heat‑shield wrapping condition, flange fasteners and gasket integrity.
Verify all mounting brackets are intact; broken brackets amplify vibration and
SITRAK Exhaust Flexible Pipe / Metal Hose OEM Part Numbers
SITRAK G5S Series AZ9H2554610034：Exhaust Metal Hose
SITRAK C7H Series WG9925542701：Metal Hose Exhaust Muffler Assembly YG9725543501：Exhaust Metal Hose 712W15204‑0046：Metal Hose Assembly WG9925540814：Metal Hose Exhaust Pipe Assembly
SITRAK T5G Series WG9925540814：Metal Hose Exhaust Pipe Assembly
Other Common SITRAK Part Numbers WG9925545165：Muffler Exhaust Pipe WG9931540880：Muffler Exhaust Tail Pipe WG9925549600：Muffler Exhaust Pipe Bellows Flexible Connection WG9925545005：Muffler Exhaust Pipe WG9925540840：Muffler Exhaust Pipe
SITRAK Exhaust Flexible Pipe / Metal Hose OEM Part Numbers
SITRAK G5S Series AZ9H2554610034：Exhaust Metal Hose
SITRAK C7H Series WG9925542701：Metal Hose Exhaust Muffler Assembly YG9725543501：Exhaust Metal Hose 712W15204‑0046：Metal Hose Assembly WG9925540814：Metal Hose Exhaust Pipe Assembly
SITRAK T5G Series WG9925540814：Metal Hose Exhaust Pipe Assembly
Other Common SITRAK Part Numbers WG9925545165：Muffler Exhaust Pipe WG9931540880：Muffler Exhaust Tail Pipe WG9925549600：Muffler Exhaust Pipe Bellows Flexible Connection WG9925545005：Muffler Exhaust Pipe WG9925540840：Muffler Exhaust Pipe
SITRAK Exhaust Flexible Pipe / Metal Hose OEM Part Numbers
SITRAK G5S Series AZ9H2554610034：Exhaust Metal Hose
SITRAK C7H Series WG9925542701：Metal Hose Exhaust Muffler Assembly YG9725543501：Exhaust Metal Hose 712W15204‑0046：Metal Hose Assembly WG9925540814：Metal Hose Exhaust Pipe Assembly
SITRAK T5G Series WG9925540814：Metal Hose Exhaust Pipe Assembly
Other Common SITRAK Part Numbers WG9925545165：Muffler Exhaust Pipe WG9931540880：Muffler Exhaust Tail Pipe WG9925549600：Muffler Exhaust Pipe Bellows Flexible Connection WG9925545005：Muffler Exhaust Pipe WG9925540840：Muffler Exhaust Pipe
