Radium Fluid Lock Catch Can Kit — PCV Side | Subaru BRZ / Toyota 86 / Scion FR-S

An oil catch can is essential to protect the engine from elevated levels of crankcase blow-by accumulated during aggressive driving. Excess oil-saturated air circulating back into the intake stream degrades performance, promotes sludge buildup, and reduces engine longevity. This kit covers the PCV (positive crankcase ventilation) circuit on the Subaru BRZ, Toyota 86, and Scion FR-S.

The Radium catch can features large 10AN ORB ports, a 4AN ORB drain port, 2-step oil separation baffling, and an O-ring sealed dipstick. The kit does not vent to atmosphere (VTA) — making it emissions compliant and track legal. The closed-loop design routes clean filtered air back through the engine to promote negative crankcase pressure for optimal performance and prevents oil vapours from entering the cabin.

Suits:

• Subaru BRZ (all years)
• Toyota 86 (all years)
• Scion FR-S (all years)

How It Works — PCV Circuit:

This catch can runs inline with the 3/8" PCV valve on the RH side of the engine bay. When intake manifold pressure is close to or greater than atmospheric pressure, the PCV check valve closes and the hose experiences no flow. During idle, steady-state cruising, and deceleration, the PCV hose experiences metered vacuum — which would normally draw crankcase vapour, unspent fuel, and oil sludge directly into the intake manifold. The Radium catch can intercepts and collects these contaminants before they reach the engine. Pressure-sealed design also suits boosted applications.

Platform Notes:

• Mounts on the RH side of the engine bay using factory bosses and holes.
• Compatible with both RHD and LHD vehicles. Some brake line clearancing may be required on RHD installations.
• Compatible with all current aftermarket forced induction kits.
• No cutting, drilling, or permanent modification required.
• Can be used standalone or paired with the 20-0902-FL CCV kit for full dual coverage (20-0903-FL).

Catch Can Specifications:

• Ports: 10AN ORB (inlet/outlet), 4AN ORB (drain)
• Baffling: 2-step oil separation
• Dipstick: O-ring sealed
• Capacity: 6 fl oz
• Height (without fittings): 5"
• Outside diameter: 2.45"
• VTA: No — closed-loop, emissions and track legal

Performance Benefits:

• Reduces oil consumption — effectively raises octane
• Cleaner intake air increases engine performance
• Prevents sludge buildup in the intake manifold
• Lowers hydrocarbon emissions

Available Part Numbers:

• 20-0901-FL — Fluid Lock Catch Can Kit, PCV Side, Subaru BRZ / Toyota 86 / Scion FR-S
• 20-0902-FL — Fluid Lock Catch Can Kit, CCV Side (sold separately)
• 20-0903-FL — Dual Fluid Lock Catch Can Kit, PCV + CCV (sold separately)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined billet aluminium with 2-step oil separation baffling and O-ring sealed dipstick
• ✅ Trusted by tuners and race teams running high-power BRZ/86 builds worldwide
• ✅ Closed-loop design — emissions compliant, track legal, and compatible with forced induction
• ✅ Bolt-on fitment using factory mounting points — no cutting, drilling, or permanent modification