Cusco 311 009 A Oil Catch Tank - Honda Civic EK4 / Civic Type-R EK9

The Cusco 311 009 A Oil Catch Tank is a vehicle-specific crankcase ventilation solution engineered for the Honda Civic EK4 and Honda Civic Type-R EK9. Designed to intercept harmful blow-by gases before they can re-enter the intake system, this catch tank is an essential upgrade for performance-oriented engines.

Modern gasoline engines use a PCV (Positive Crankcase Ventilation) system that routes blow-by gases — a mixture of combustion gases, oil vapor, and moisture — back into the intake manifold. Over time, this oil-laden mist causes carbon deposits and sludge buildup inside the intake tract, throttle body, and combustion chamber. The Cusco oil catch tank routes inline with the crankcase PCV system, trapping the oil and fuel mixture before it can contaminate the intake, resulting in a cleaner, more efficient combustion cycle and better long-term engine health.

Key Features:

• Vehicle-specific fitment for Honda Civic EK4 (B16A) and Civic Type-R EK9 (B16B), model years 1995–2000
• 0.6L capacity catch tank with 9mm (Ø9) internal hose diameter
• Intercepts crankcase oil blow-by gas to prevent intake contamination and carbon buildup
• Helps maintain cleaner intake valves and a more efficient fuel burn
• Manufactured in Japan by Cusco (Carrosser Co., Ltd.) to OEM-grade quality standards
• Includes necessary fittings and hoses for installation

The Cusco 311 009 A is a direct-fit, bolt-on oil catch tank that keeps your engine's induction system clean and performing at its best. A trusted upgrade for Honda B-series engine builds and track-day preparation.