An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by accumulated from aggressive driving. Excess oil saturated air circulating back into the air intake stream can lead to degraded performance.

Radium Engineering’s closed-loop system does NOT vent to atmosphere (VTA), thus is emissions and track legal. Instead, clean filtered air routes back in through the engine to be burned and to promote negative crankcase pressure for optimal performance.
Furthermore, a closed system prevents unwanted oil vapors entering into the cabin.

Includes:
-Billet aluminum oil catch can with an integrated dipstick
-Laser-cut anodized E46 specific mounting bracket
-Anodized aluminum 10AN hose ends and adapter fittings
-Enough 5/8″ PCV hose to work with modified vehicles
-Mounting hardware and hose clamps

Features:
-Effectively raises the octane and increased engine performance from cleaner inlet air
-Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc.
-Excessive oil collection can be an indicator of a damaged engine.
-Lowers hydrocarbon emissions
-Capacity: 6 fluid ounces
-Height (without fittings): 5 inches
-Outside Diameter: 2.45 inches

This kit does not work with RHD BMW models. Shown below is the LHD E46 M3.

The stainless steel filtration media is cleanable and reuseable

Option Petcock Drain Kit
This kit, sold separately, can be used to remotely drain the catch cans without the need to unscrew the canister body. Linked HERE.

-4AN ORB Barbed Fitting
-Nylon Mini Ball Valve
-PCV Compliant Rubber Hose
-OEM Style Spring Clamps