Original Cummins engine spare parts Combination hose C2874250

Built as a versatile fluid transmission component, this combination hose features a 5-layer composite structure to meet diverse working demands. The inner layer is a smooth nitrile rubber (NBR) layer (3mm thickness) that resists corrosion from engine oil and coolant, ensuring low fluid resistance. The middle layer is a high-tensile polyester cord reinforcement (2mm thickness) that withstands 1.2MPa working pressure (burst pressure ≥3.6MPa), preventing expansion or rupture. The outer layer is a weather-resistant EPDM rubber layer (2mm thickness) that blocks UV rays and mechanical abrasion. A conductive mesh layer is embedded between the inner and middle layers to eliminate static electricity—critical for fuel-related fluid transmission. This structure balances flexibility (bend radius ≤150mm) and rigidity, adapting to tight engine compartment spaces

Engineered to adapt to harsh temperature environments, the combination hose exhibits exceptional thermal stability. The NBR inner layer and EPDM outer layer work together to support a continuous operating temperature range of -40℃ to 120℃, with short-term tolerance up to 150℃. This ensures reliable performance in frigid cold starts (e.g., -35℃ in northern regions) and high-temperature engine operation (e.g., 110℃ coolant temperature under full load). The hose undergoes 500 thermal cycle tests (from -40℃ to 120℃) with no cracking, hardening, or leakage—maintaining elasticity and sealing performance. For X15 engines operating in desert areas, it resists thermal aging, extending service life by 40% compared to standard hoses

Optimized to resist corrosion and physical damage, the hose integrates multiple protective features. The NBR inner layer is inert to synthetic engine oil, ethylene glycol coolant, and diesel fuel, with volume swelling ≤5% after 1000-hour immersion. The EPDM outer layer resists chemical corrosion from road salt, industrial pollutants, and cleaning agents, while its textured surface enhances abrasion resistance (passing 5000-cycle wear testing with a Taber abraser). The flange connections are equipped with stainless steel clamps (304 grade) that prevent rust and ensure a tight seal—avoiding fluid leakage caused by clamp failure. These features make the hose suitable for coastal, mining, and industrial environments with high corrosion risks

The combination hose is designed for efficient installation and long-term cost savings. Its pre-formed shape (customized for Cummins engine layouts) eliminates the need for on-site bending, reducing installation time by 35%—two technicians can complete replacement in 45 minutes. The flange connections feature quick-lock clips that ensure secure fitting without specialized tools, avoiding improper installation-related leaks. By preventing fluid leakage and cross-contamination (e.g., oil mixing with coolant), it reduces engine repair costs by 60% and avoids expensive component damage (e.g., water pump failure, cylinder head corrosion). Backed by a 2-year/200,000km warranty, it provides reliable performance for long-haul logistics, mining, and construction applications, minimizing unplanned downtime