

Radium Engineering Catch Can Kit for Mazda MX-5 NB PCV (Fluid Lock)
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Description
Radium Engineering Catch Can Kit - Mazda MX-5 NB PCV (Fluid Lock)
Application: Mazda MX-5 / Miata NB (1998-2005) – LHD and RHD
Part Type: PCV catch can kit with Fluid Lock can
Part Number: 20-1336-FL
A catch can removes oil and water condensation from the crankcase gases before they reach the intake manifold. This helps prevent oil build-up in the intake, intercooler, throttle body and intake manifold. The closed system also stops oil vapours entering the cabin.
This kit uses Radium's Fluid Lock catch can on the PCV circuit. It mounts on the right side of the engine bay near the coolant overflow using OEM holes, and runs inline with the PCV valve so the factory PCV function is kept. The can is pressure sealed, so a connection to the intake manifold is permitted on boosted applications.
Key Features
- Fluid Lock: Patented Fluid Lock mechanism stops the reservoir overfilling and holds collected fluid until the can is emptied
- Large Ports: 10AN ORB inlet and outlet ports
- Drain Port: 4AN ORB drain port
- 2-Step Baffling: Two-step oil separation baffling
- Dipstick: O-ring sealed dipstick to check the fluid level
- Direct Fitment: Mounts on the right side of the engine bay near the coolant overflow using OEM holes – no drilling
- PCV Retained: Runs inline with the PCV valve and keeps the factory PCV function
- Pressure Sealed: Intake manifold connection permitted for boosted applications
What's Included
- Fluid Lock catch can
- Anodised aluminium mounting bracket
- 3/8in PCV hose
- 5/16in heater hose
- 10AN ORB to 10mm SAE quick connect fittings (x2)
- SAE quick connect hose ends (x2)
- Installation hardware
Optional Parts
- Radium Engineering Catch Can Add-On - Mazda MX-5 NB CCV (Fluid Lock) (20-1337-FL) – adds a second Fluid Lock can on the CCV circuit to this PCV kit
- Radium Catch Can Petcock Drain Kit (20-0024) – drain the can without removing the lower reservoir, where there is space under the can
Important Notes
- Compatible with both LHD and RHD models
- These NB kits mount on the right side of the engine bay – they differ from Radium's 20-0336-FL / 20-0337-FL 1989-2005 kits, which mount on the left strut tower
- There is no fixed emptying interval – start checking the integrated dipstick after 3-4 weeks of driving and adjust from there
Vehicle Fitment
- Mazda MX-5 / Miata NB (1998-2005) – LHD and RHD
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.

