This oil catch can is built to keep your engine cleaner and more reliable by separating oil from crankcase vapors before it reaches the intake. Why you need it - Prevents carbon and sludge from entering the engine and intake system, helping maintain a clean engine and stable running condition, extending service life. - Captures incoming oil to prevent oil accumulation in the valve area, improving safety and reducing maintenance. Key features - Material and finish: durable aluminum alloy with an anodized, shiny surface; corrosion and rust resistant, high strength, lightweight, and no easy fading or deformation. - Capacity and dimensions: 300 ml capacity; diameter of 68.2 mm (2.69 in); height 112.5 mm (4.43 in); inlet/outlet thread M16x1.5. - Adapters and compatibility: includes 3 adapters for 6 mm, 8 mm, and 10 mm hoses; suitable for most car and motorcycle fuel tanks. Please ensure enough installation space. - Sealing and construction: fully welded body with an O-ring gasket for strong sealing and minimal oil leakage; can function as a sealed oil and gas separator to keep the interior clean and simplify maintenance. - Hose and durability: comes with a tough hose, resistant to aging and fracture for long service life. Use scenarios - Daily drivers seeking to maintain engine cleanliness and reliability. - Turbocharged or high-performance engines where oil blow-by is a concern. - Motorcycles or small vehicles where compact size and reliable sealing are important.