Radium Engineering 20-0073-FL Fluid-Lock Catch-Can Kit for 01-06 BMW M3 E46

Vehicle Fitment

• 2001-2006 BMW M3 E46 (all body styles, S54 engine)

Fitment Notes

• Single Fluid-Lock catch can--mounts via included bracket
• Includes hoses and fittings compatible with crankcase/VANOS systems
• Prevents oil vapor re-entering intake--improves octane & throttle response
• May trigger local emissions warnings; not CARB-legal in some states

Features

• TITAN® billet-aluminum can with patented Fluid-Lock technology
• 3-stage filtration separates oil, returns cleaner air to intake
• Designed for loop-back installation--no vent-to-atmosphere
• Includes stainless hose ends, PTFE hose rated to 280 °F
• Capacity: 7 oz; clear anodized for easy fluid monitoring
• Custom bracket simplifies firewall mounting
• Preventive maintenance--reduces carbon buildup in intake and engine
• Made in the USA; backed by Radium's limited lifetime warranty

Specifications

• Part Number: 20-0073-FL Fluid-Lock catch can kit
• Capacity: 7 oz (200 mL)
• Material: Titanium bar stock billet can, stainless fittings
• Hoses: PTFE-lined, 7 AN (-8) hose ends
• Filters: 3-stage stainless mesh assembly
• Mount: Custom billet bracket for OEM locations
• Warranty: Limited lifetime

Included Components

• 1x Radium 20-0073-FL Fluid-Lock catch can
• 1x Custom bracket with stainless hardware
• 7 AN PTFE hose & fittings
• 3-stage filter insert
• Mounting hardware & installation instructions

Product Description

The Radium 20-0073-FL Fluid-Lock catch can kit is tailored for 2001-2006 BMW E46 M3 (S54). This precision-engineered system includes a billet can with Fluid-Lock separation technology, a durable bracket, and premium PTFE hoses with stainless fittings for a reliable, leak-free installation.

Acting as a protective barrier between the crankcase/VANOS and intake, it captures oil vapors and helps prevent carbon buildup--leading to cleaner intake, improved octane retention, and smoother throttle response. With clear anodizing for visual monitoring and a capacity of 7 oz, this kit is both functional and refined. Not CARB-legal, it is designed for performance-focused builds and supported by Radium's lifetime warranty.