Muffler Rear Inlet Air Pipe Assembly OE 1203020-K26W0 for Dongfeng KC Heavy Trucks

This OE 1203020-K26W0 muffler inlet pipe is bent from thick industrial stainless steel tube in one piece, capable of enduring long-term 600℃+ high exhaust temperature without softening or deformation. The seamless smooth inner curved channel minimizes exhaust flow resistance, effectively lowering engine backpressure to avoid power loss and fuel consumption rise during heavy load haulage. Both ends are equipped with precision stamped standard connecting flanges: square flat flange for muffler connection and quick-release circular flange for engine exhaust outlet, all bolt hole positions 1:1 replicated Dongfeng KC original exhaust layout, realizing leak-free bolt-on assembly without gasket modification. The overall pipe surface undergoes anti-oxidation sandblasting treatment to resist road mud, salt fog and exhaust condensate corrosion, extending service life under harsh driving environments.

Heavy truck fleet exhaust repair technicians often face severe engine and safety hazards from inferior aftermarket exhaust pipes: thin low-grade steel cracks rapidly under long-term high exhaust temperature, causing toxic exhaust gas leakage into cab; rough uneven inner pipe wall creates large exhaust backpressure, reducing engine horsepower and increasing fuel cost; irregular non-OEM flange hole spacing fails to fit engine and muffler interfaces, leading to persistent gas seepage; ordinary carbon steel rusts through pipe wall within months, requiring frequent pipe replacement. This genuine DFCV OEM muffler inlet pipe completely eliminates these exhaust system pain points: thick stainless steel resists thermal cracking; smooth inner wall stabilizes engine power; dual standard flanges realize zero-gap sealing; anti-rust surface avoids perforation leakage, cutting exhaust overhaul frequency and fuel loss for fleets.

As a core high-temperature connecting spare part of Dongfeng KC heavy-duty diesel exhaust system, this muffler rear inlet pipe fully complies with Dongfeng Commercial Vehicle official exhaust component production quality standards. Every finished exhaust pipe completes three mandatory professional durability laboratory tests: 1000-cycle high-temperature thermal shock alternating test, million-time chassis road vibration simulation fatigue test, full-pressure air tightness leakage inspection, maintaining stable sealing and structural integrity under long-distance high-load climbing, cold northern winter and humid coastal salt fog transportation scenarios. Permanent laser engraved OE code marking is printed on pipe outer wall for genuine product traceability, all bending radian, pipe length and flange bolt layout strictly follow original vehicle factory engineering drawings, zero assembly mismatch after replacement.

We are authorized Dongfeng wholesale supplier of genuine DFCV OEM exhaust system spare parts for Dongfeng KC heavy trucks, maintaining permanent sufficient stock of OE 1203020-K26W0 muffler rear inlet pipe assemblies. Each exhaust pipe is wrapped with shockproof foam and hard carton packaging to prevent flange deformation and pipe scratch during cross-border sea and land logistics transit. Its direct flange bolt-on matching design allows professional exhaust maintenance technicians to finish full replacement within 20 minutes without refitting exhaust gaskets or muffler brackets, drastically cutting vehicle downtime for logistics fleets and heavy truck exhaust leak repair garages. We provide a 24-month anti-rust and anti-crack structural quality warranty plus free remote exhaust interface matching installation guidance for all worldwide bulk wholesale buyers.