Radium 20-0873-FL Fluid Lock Catch Can Kit for 98-06 BMW E46 3-Series

Vehicle Fitment

• 1998-2006 BMW E46 320i (LHD only)
• 1998-2000 BMW E46 323i (LHD only)
• 2001-2006 BMW E46 325i (LHD only)
• 1998-2000 BMW E46 328i (LHD only)
• 2000-2006 BMW E46 330i (LHD only)
• 2003-2006 BMW E46 330i ZHP (LHD only)

Features

• Radium Engineering Fluid Lock catch can kit engineered for BMW E46 PCV systems
• Fluid Lock patented design prevents over-fill and traps contaminants securely
• Large 10 AN ORB inlet/outlet ports for high-flow hose connections
• 4 AN ORB drain port with sealed O-ring dipstick for easy maintenance
• Two-stage internal baffling for efficient oil/vapor separation
• Direct-fit laser-cut bracket designed for E46 engine bay layout
• Anodized billet aluminum can with integrated dipstick
• Includes high-quality adapter fittings and stainless hardware

Specifications

• Part Number: 20-0873-FL
• Application: Engine crankcase ventilation catch can
• System Type: Closed-loop (no vent to atmosphere)
• Capacity: ~7 fl oz oil/vapor separation
• Port Type: 10 AN ORB inlet/outlet, 4 AN ORB drain
• Material: Billet aluminum with anodized finish
• Mounting: E46-specific bracket, RH firewall compartment
• Compatibility: LHD only due to mounting space constraints

Included Components

• 1x Fluid Lock catch can with integrated dipstick
• 1x Laser cut anodized E46-specific mounting bracket
• Various anodized aluminum 10 AN hose ends and adapter fittings
• 1x Anodized aluminum V2 quick connect 10 AN adapter set
• 10 AN (5/8") PCV hose long enough for modified routing
• Stainless steel mounting hardware and hose clamps

Product Description

The Radium Engineering 20-0873-FL Fluid Lock Catch Can Kit is a precision-engineered crankcase ventilation solution built specifically for the *BMW E46 3-Series* from 1998 through 2006 (LHD configuration only). Designed to mount in the right-hand engine bay compartment near the firewall, this catch can captures oil vapor and condensation from the PCV system before it re-enters the intake tract. Radium's patented Fluid Lock mechanism prevents overfilling and traps contaminants securely until drained, helping keep the intake, throttle body, and intake manifold cleaner while potentially improving performance and reducing hydrocarbon emissions.

Featuring a robust billet aluminum construction with large 10 AN ORB inlet/outlet ports, a 4 AN ORB drain with sealed dipstick, and a specially laser-cut mounting bracket, the 20-0873-FL installs with no drilling required in compatible E46 3-Series models. The internal two-stage baffling enhances separation efficiency and the included adapter fittings and hoses support flexible installation in modified or stock configurations. Note that this kit is incompatible with right-hand drive models due to space limitations in the designated mounting area.