how to install oil catch can on 2008 335i

Since direct injection engines shoot fuel directly into the cylinder, there's nothing preventing gunk from building up.Īn oil catch can acts as a filter, plugging into this hose line to 'catch' the contaminants before they can reach the intake. Why does this specifically affect direct-injected engines? Well, in port-injected engines, the fuel being sprayed into the intake works as a cleanser, washing off any oil buildup that might occur.

These contaminants can build up inside the intake when left unchecked, this buildup can hurt fuel economy and horsepower, and can even cause misfires. The problem is, this pressure relief hose allows oil and other nasty stuff from the crankcase to get into the intake manifold, where it doesn't belong. This hose relieves pressure in the crankcase generated by blow-by (when pressure escapes the combustion chamber by seeping past the piston rings). Here's how they work, and why you might want to install one on your own car.Ī typical catch can plugs into a hose running from the top of your engine's crankcase to the intake manifold. They prevent oil and other contaminants from causing buildup inside your engine's intake manifold. This kit, sold seperately, can be used to remotely drain the catch cans without the need to unscrew the canister body.Oil catch cans are simple devices that can greatly benefit direct-injected engines. The stainless steel filtration media is cleanable and reuseable Excessive oil collection can be an indicator of a damaged engine. Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc.

Effectively raises the octane and increased engine performance from cleaner inlet air Enough 10AN PCV hose to work with modified vehicles Aluminum 10AN hose ends and adapter fittings Aluminum 10AN BMW specific PCV adapter fittings Aluminum laser cut BMW specific mounting bracket Aluminum oil catch can with integrated dipstick The kit secures to the OEM power steering reservoir mount with no cutting or drilling required.Īs shown below, this kit includes N54 specific billet 10AN adapter fittings eliminating the need to modify the OEM vent tubing. Instead, clean filtered air routes back in through the engine to be burned and to promote negative crankcase pressure for optimal performance.įurthermore, a closed system prevents unwanted oil vapors entering into the cabin. Radium Engineering's closed loop system does NOT vent to atmosphere (VTA), thus is emissions and track legal. Excess oil saturated air circulating back into the air intake stream can lead to degraded performance. Review the installation instruction link above before ordering.Īn oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by accumulated from aggressive driving. This oil catch can kit is compatible with all BMW 135i, 335i, and 535i models with the 3.0L twin turbo N54 engine. Radium Engineering catch cans feature large 10AN ORB ports, a 4AN ORB drain port, 2-step oil separation baffling, and an O-ring sealed dipstick. Click here to watch an independent installation video

How to install oil catch can on 2008 335i