Dongfeng Renault Engine parts cylinder liner D5010359561

Crafted from premium centrifugally cast gray iron alloy (with a minimum tensile strength of 250 MPa) reinforced with pearlite and graphite structures, the D5010359561 cylinder liner delivers exceptional resistance to high temperatures and wear. The material undergoes a specialized heat-treatment process (including quenching and tempering) to enhance surface hardness (reaching 200-250 HB) and fatigue resistance, enabling it to withstand the extreme conditions of engine combustion—such as continuous exposure to temperatures up to 2,000°C and high-pressure piston impacts. Unlike low-grade liners, it resists scuffing, corrosion from fuel additives, and mechanical deformation, significantly extending the engine’s service life

The inner wall of this cylinder liner features a micro-smooth finish (with a surface roughness of Ra 0.2-0.4 μm) achieved through precision honing, which reduces friction between the piston rings and liner wall. This design minimizes wear on both components, improves oil retention (to maintain effective lubrication), and enhances combustion efficiency by ensuring a tight seal between the piston rings and liner. Additionally, the liner’s outer surface is coated with an anti-seize compound, facilitating easy installation and preventing cold welding to the engine block—even under long-term thermal expansion and contraction cycles

Every D5010359561 cylinder liner undergoes a comprehensive quality control process to meet Dongfeng Renault’s rigorous engineering benchmarks. Key inspections include dimensional accuracy testing (via coordinate measuring machines to verify bore diameter, wall thickness, and straightness), material composition analysis (using spectral analysis to ensure alloy purity), and pressure tightness testing (to detect microscopic cracks or defects). It also undergoes a series of performance trials, such as thermal shock testing (simulating rapid temperature changes) and wear resistance testing (on specialized dynamometers). Only liners that pass 100% of these tests are approved for distribution, ensuring consistent reliability and compatibility

Designed to work in perfect harmony with Dongfeng Renault’s engine components (including pistons, rings, and gaskets), this cylinder liner ensures stable combustion chamber pressure and efficient heat dissipation. Its precise wall thickness (optimized for each engine model) balances thermal conductivity and structural strength, preventing overheating of the engine block while maintaining cylinder integrity. Whether used in high-load applications (e.g., long-haul trucking, heavy construction) or frequent start-stop cycles (e.g., urban delivery vehicles), it provides consistent performance, reduces the risk of engine failure, and lowers maintenance costs by minimizing the need for premature liner replacement