Radium Dual Fluid Lock Catch Can Kit - Mazda MX-5 NA NB 89-05

Radium Dual Fluid Lock Catch Can Kit - Mazda MX-5 NA NB 89-05

Application: Mazda MX-5 NA (1989-1997) and NB (1998-2005), 1.6L and 1.8L
Part Type: Fluid Lock dual (PCV and CCV) oil catch can kit
Part Number: 20-0337-FL

Radium catch cans separate oil and water condensate from crankcase gases before they reach the intake, preventing oil build-up in the intake, intercooler, throttle body and intake manifold. It is a closed system, so oil vapours are kept out of the cabin. This dual kit runs both a PCV and a crankcase catch can, isolating all engine breather ports – Radium's recommended option for maximum protection. Both cans mount on the left-side strut tower near the exhaust manifold using OEM holes.

On the PCV side, the can runs inline with the PCV valve and retains factory function. At idle, steady cruise and deceleration the PCV hose sees metered vacuum that can draw crankcase vapour and oil sludge into the intake manifold after a hard run – the catch can captures it first. Because Radium catch cans are pressure sealed, connection to the intake manifold is permitted on boosted applications.

On the crankcase (CCV) side, the can runs inline with the crankcase breather port. At low load this line sees atmospheric pressure, but at wide-open throttle crankcase flow is high and can leave oil and sludge in the intake pipe and intercooler, reducing intercooler efficiency and performance.

Key Features

• Fluid Lock System: Patented design prevents the reservoir overfilling and holds collected fluid until emptied
• Large Ports: 10AN ORB inlet and outlet ports
• Drain Port: 4AN ORB drain port
• Two-Step Baffling: Two-stage oil separation
• O-Ring Sealed Dipstick: Check fluid level without removing the can
• Capacity: 207ml (7 fl oz)
• Direct Fit: No drilling required

What's Included

• Fluid Lock catch cans (x2)
• Anodised aluminium mount brackets (x2)
• 3/8" PCV hose
• 10AN ORB to 6AN male fittings (x4)
• Pushlok hose ends (x4)
• Installation hardware

Important Notes

• The OEM air intake box cannot be used with this kit
• Mounts on the left-side strut tower near the exhaust manifold using OEM holes
• For the NB, Radium also offers a right-side mounted dual kit (20-1338-FL)
• There is no fixed emptying interval – check the dipstick from 3-4 weeks of driving, then as needed; PCV cans typically collect more than CCV cans
• Excessive oil collection can indicate an engine problem such as excessive blow-by or an overfilled oil level
• Empty by unscrewing the reservoir, or fit a Radium Petcock Drain Kit (sold separately) where there is space
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Mazda MX-5 NA (1989-1997) – 1.6L and 1.8L
• Mazda MX-5 NB (1998-2005) – 1.6L and 1.8L

Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.