Cummins engine auto parts Air compressor inlet pipe C5547575

Built as a critical component for the engine’s air supply system, this inlet pipe features an optimized smooth-bore design to maximize airflow efficiency. The internal surface is precision-machined to a roughness of Ra ≤0.8μm, minimizing airflow resistance by 30% compared to pipes with uneven inner walls. Its 45° gradual bends (instead of sharp angles) prevent airflow turbulence, ensuring a steady air intake rate of 120L/min—sufficient to support the air compressor’s maximum output pressure of 10bar. For ISB6.7 engines in city buses, this design reduces the compressor’s load by 5%, lowering fuel consumption by 2-3% while maintaining consistent air supply for brakes and pneumatic systems

Engineered to endure the mechanical stresses of engine operation, the inlet pipe adopts a reinforced composite structure. The base material is glass-fiber-reinforced nylon 66 (PA66-GF30), boasting a tensile strength of 280MPa and flexural strength of 400MPa—resisting deformation under 0.5MPa negative intake pressure. A 1mm-thick stainless steel mesh is embedded in the pipe wall to enhance impact resistance, preventing cracking from accidental collisions or engine vibration. The pipe’s flange connection is reinforced with a metal insert (304 stainless steel), ensuring a secure fit that withstands 100,000 vibration cycles (10-200Hz) without loosening—extending service life to ≥250,000km

Optimized to adapt to diverse operating conditions, the inlet pipe exhibits exceptional environmental resistance. The PA66-GF30 material maintains structural integrity at a wide temperature range of -40℃ to 120℃, ensuring reliable performance in frigid northern winters (cold starts at -35℃) and high-temperature engine compartments (110℃ under full load). The pipe’s outer surface is coated with an anti-UV layer, preventing degradation from sunlight exposure in open-top construction machinery. It resists chemical corrosion from road salt, dust, and engine oil, passing 1500-hour neutral salt spray testing (ASTM B117) with no cracking or discoloration—suitable for coastal, mining, and industrial environments

The inlet pipe is designed for efficient installation and long-term cost savings. Its pre-formed shape (customized for ISB6.7/QSB6.7 engine layouts) eliminates on-site bending, reducing installation time by 40%—a single technician can complete replacement in 30 minutes. The quick-connect flange features a built-in O-ring (HNBR rubber) that ensures a tight seal without additional sealants, avoiding air leaks that reduce compressor efficiency. By maintaining consistent airflow, it prevents compressor overheating and premature wear (repair costs up to $1,500). As a genuine Cummins part, it ensures compatibility with the original air system, eliminating the need for aftermarket adjustments. Backed by a 2-year/200,000km warranty, it minimizes unplanned downtime for fleet operators