AS2474 4931691 Air Oil Separator Filter AS2474, OEM part number 4931691, is a professional crankcase ventilation air oil separator filter specially designed for Cummins diesel engines. It serves as a key component of the engine crankcase ventilation system, which separates oil mist, oil vapor and exhaust gas inside the crankcase efficiently. It can prevent engine oil from escaping into the intake system, reduce oil consumption, avoid carbon deposit buildup on valves and turbo parts, and maintain stable internal pressure of the engine crankcase. Made strictly according to OEM original standards, it is a direct aftermarket replacement part for trucks, generators and industrial diesel equipment, helping users lower engine failure rates and daily operating costs effectively.
Product Material Description:
Filter Medium: High-efficiency multi-layer glass fiber composite filter media, featuring excellent oil mist adsorption capacity, stable pore structure, resistant to high temperature and oil erosion, long-lasting filtration performance.
Outer Housing: High-strength engineering plastic shell with reinforced structure, shock-resistant, corrosion-resistant and deformation-proof, suitable for long-term engine vibration working environment.
Internal Support Frame: High-hardness plastic skeleton supports filter material tightly to prevent deformation under airflow impact.
Sealing Foam & Rubber: High-density elastic polyurethane foam and premium NBR rubber gaskets, fit closely with the installation seat to achieve full sealing and prevent gas bypass.
End Cap & Interface: Precision molded port structure, consistent with original installation size for quick assembly.
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