Dongfeng Renault engine parts National V rear section exhaust pipe D5010224876

Exclusively tailored for Dongfeng Renault engine models, the exhaust pipe is developed via 3D laser scanning of the original vehicle’s underbody and exhaust system layout. It replicates every contour, flange size (150mm bolt circle), and mounting bracket position with a tolerance of ±0.05mm, ensuring seamless alignment with the front exhaust section and muffler. Unlike universal exhaust pipes that require cutting or welding, it directly bolts to the factory flanges using OEM-matched gaskets and hardware—no modifications to the vehicle’s underbody are needed. This precise fit eliminates exhaust leaks (a major cause of emission failures and noise) and ensures the pipe does not interfere with other components (e.g., fuel tanks, suspension parts), preserving the vehicle’s original safety and aerodynamic profile

Built to withstand extreme exhaust temperatures (up to 650°C) and corrosive exhaust gases, the pipe is crafted from 304-grade stainless steel (1.5mm wall thickness). This material offers exceptional heat resistance—maintaining structural integrity without warping or cracking even during prolonged high-load operation—and superior corrosion resistance to exhaust byproducts (e.g., sulfuric acid from diesel combustion). Unlike mild steel pipes that rust within 1–2 years, 304 stainless steel ensures the pipe lasts 5+ years, even in high-humidity or coastal environments. The pipe’s outer surface is polished to a brushed finish that resists discoloration from heat, maintaining a professional appearance for fleet vehicles

Engineered to balance exhaust efficiency and noise control, the pipe features a mandrel-bent design that creates a smooth, continuous internal path—reducing backpressure by 15% compared to crush-bent alternatives. Lower backpressure improves engine fuel efficiency by 2–3% and enhances torque output, especially at low RPMs. Additionally, the pipe integrates a partial baffle structure (strategically placed to avoid flow restriction) that reduces exhaust noise by 8–10 dB (measured at 1m distance), meeting China’s vehicle noise standards (GB1495-2002). This design ensures the exhaust system operates quietly without compromising performance, improving driver comfort during long-haul trips

The exhaust pipe’s design prioritizes durability and ease of service. It includes reinforced mounting brackets (welded via TIG welding for strength) that distribute weight evenly across the vehicle’s underbody, preventing stress cracks from road vibration. The flanges are thickened (10mm) and heat-treated to resist warping, ensuring a tight seal with gaskets even after repeated thermal cycles. For installation, the pipe comes with all necessary hardware (stainless steel bolts, lock nuts, and graphite gaskets) that match Dongfeng Renault’s OEM specifications. Technicians can complete replacement in 45–60 minutes using standard hand tools, with no specialized welding equipment required. Backed by a 24-month warranty against manufacturing defects (e.g., weld failure, corrosion ，or structural deformation), it provides reliable exhaust performance and long-term peace of mind for Dongfeng Renault engine owners