Radium Engineering Fluid Lock Catch Can Kit (LHD Only)
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Radium Engineering Fluid Lock Catch Can Kit (LHD Only) - BMW M3 (E46)
This Radium Engineering Fluid Lock catch can kit (SKU 20-0073-FL) is a direct-fit crankcase ventilation upgrade for left-hand-drive BMW E46 M3 and M3 CSL models. It captures oil and water condensation from the crankcase gases before they reach the intake, helping keep the intake manifold, throttle body and intake tract free of oil build-up.
The kit mounts in the right-hand rear compartment of the engine bay near the firewall and suits both early cars with the ABS module in that compartment and later cars with the secondary PCV system. The Fluid Lock design is fully sealed and recirculating (no vent to atmosphere), and its patented mechanism stops the reservoir overfilling, trapping collected fluid until the can is emptied.
Note: Designed for left-hand-drive vehicles only. Radium states it is not compatible with right-hand-drive models because of its mounting location, so Australian-delivered RHD cars will need bracket modification. Check the fluid level with the dipstick from around 3-4 weeks of driving to work out a service interval. Installation by a professional is recommended.
Pairs Well With
- Radium Engineering Catch Can O-Ring Service Kit - Universal
- Radium Engineering Catch Can Petcock Drain Kit - Universal - 4AN ORB
- Radium Engineering Fuel Rail - BMW M3 (E46 S54)
- Radium Engineering Fuel Rail Plumbing Kit - BMW M3 (E46 S54)
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| BMW | M3 | E46 | 2000-2006 | S54 – LHD only |
| BMW | M3 CSL | E46 | 2003-2004 | S54 – LHD only |
Product
- Brand
- Radium Engineering
- Part number(s)
- 20-0073-FL
Details
- Catch Can Type
- Fluid Lock (sealed, recirculating – no vent to atmosphere)
- Capacity
- 207mL (7 fl oz)
- Height (without fittings)
- 12.7cm (5in)
- Outside Diameter
- 6.2cm (2.45in)
- Ports
- 10AN ORB inlet/outlet, 4AN ORB drain
- Separation
- 2-step baffling with reusable stainless steel filter media
- Construction
- Anodised billet aluminium
- Mounting Location
- RH rear engine bay compartment near firewall
- Drive Side
- LHD only
Contents
Billet aluminum oil catch can with integrated dipstick
Anodized laser-cut E46 M3-specific mounting bracket
10AN hose ends and adapter fittings
10AN (5/8") PCV hose – suitable for modified engine bays
Stainless steel mounting hardware and hose clamps

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