Crankcase Breather Assembly, P/N 4W-3027 – Caterpillar

The Caterpillar 4W-3027 Crankcase Breather Assembly is a genuine OEM engine ventilation component engineered to maintain proper crankcase pressure and efficiently filter blow-by gases, oil mist, and moisture. Manufactured to Caterpillar's stringent quality standards, it provides reliable engine protection, enhances operational efficiency, and supports extended engine service life in demanding industrial and heavy-duty applications. Designed for seamless compatibility with a wide range of Caterpillar diesel engines and equipment, it delivers dependable performance in construction, mining, marine, power generation, and oil & gas environments.

Manufacturer: Caterpillar (Cat®)
Part Number: 4W-3027
Product Type: Engine Crankcase Breather Assembly
Function: Filters crankcase gases, oil mist, and moisture while maintaining proper engine crankcase ventilation.
Application: Suitable for various Caterpillar diesel engines and equipment, including industrial, marine, power generation, construction, and mining applications.