Engine crankcase breathers are components that release excess pressure and gases from the crankcase, preventing oil leaks and contamination. Marine engine spares include these breathers to ensure optimal engine performance and longevity in harsh marine environments. They are essential for maintaining proper ventilation and reducing harmful emissions in marine engines.

Size: Varies by engine model (typically 1" to 4" diameter)

Grade: Marine-grade, corrosion-resistant

Viscosity: Compatible with SAE 30 to SAE 50 engine oils

Buoyancy: Non-buoyant (metallic) or buoyant (plastic variants)

Material: Aluminum, stainless steel, or reinforced thermoplastics

Operating Temperature: -20°C to 150°C (-4°F to 302°F)

Pressure Rating: 5 to 15 psi (depending on design)

Filtration Efficiency: 10 to 40 microns (for filtered breathers)

Mounting Type: Threaded, flanged, or clamp-on

Compliance: Meets ISO 9001, ASTM, and marine industry standards

Yes, Engine Crankcase Breathers and Marine Engine Spares typically comply with maritime standards such as ISO 15540, ISO 15750, or specific classification society requirements like ABS, DNV, or Lloyd's Register.