Radium Crankcase Catch Can Kit Fluid Lock - Honda S2000 AP1/AP2 99-09

Radium Crankcase Catch Can Kit Fluid Lock — Honda S2000 AP1/AP2 1999-2009

An oil catch can is essential on any performance vehicle to protect the engine from elevated crankcase blow-by accumulated during aggressive driving. Excess oil-saturated air recirculating back into the intake stream degrades combustion efficiency, fouls intake valves, and reduces thermal efficiency in intercooled applications. Radium Engineering catch cans feature large 10AN ORB ports, a 4AN ORB drain port, 2-step oil separation baffling, and an O-ring sealed dipstick.

The Radium Crankcase Catch Can Kit Fluid Lock 20-0097-FL runs inline with the 1/2" valve cover breather port. At high load (WOT), this hose experiences vacuum and would otherwise draw crankcase vapours, unspent fuel, and oil sludge into the air filter intake pipe. For turbocharged or supercharged applications, this catch can is a necessity — oil accumulation in the intercooler significantly reduces heat exchange efficiency.

This kit operates as a closed-loop system — it does not vent to atmosphere (VTA), making it emissions and track legal. Clean, filtered air is routed back through the engine to promote negative crankcase pressure for optimal performance, while preventing oil vapours from entering the cabin.

Compatibility Note: This kit is designed for 2000-2009 RHD and 2006-2009 LHD Honda S2000 models. It is not compatible with 2000-2005 LHD models unless the cruise control module is removed.

For the ultimate in engine protection, Radium recommends pairing this kit with the PCV Catch Can Kit 20-0098-FL, or purchasing the complete Dual Kit 20-0099-FL.

Suits: Honda S2000 AP1 (1999-2004), Honda S2000 AP2 (2005-2009)

Catch Can Specifications:

• Capacity: 7 fluid ounces
• Height (without fittings): 5 inches
• Outside diameter: 2.45 inches

Kit Includes:

• Radium billet oil catch can with integrated condenser and dipstick
• S2000-specific laser-cut powder-coated mounting bracket
• Anodized aluminium 8AN hose ends and adapter fittings
• 1/2" PCV rubber hose — sufficient length for custom routing
• Vacuum and heater hose to eliminate OEM metal hard tube loom
• Stainless steel mounting hardware

Available Part Numbers:

• 20-0097-FL — Crankcase Catch Can Kit Fluid Lock, Honda S2000 AP1/AP2
• 20-0098-FL — PCV Catch Can Kit (sold separately)
• 20-0099-FL — Dual PCV/Crankcase Kit (sold separately)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined billet aluminium components for precision fit and long-term durability
• ✅ Trusted by tuners and race teams running high-power S2000 builds worldwide
• ✅ Bolt-on fitment — no cutting, drilling, or fabrication required; emissions and track legal
• ✅ Pressure-sealed design safe for boosted applications; compatible with E85, pump petrol, and flex fuel