Keep Oil Out of your F Chassis B46/B48 BMW Air Intake System!

It's no secret that B46 & B48 turbo BMW motors can suffer from oil control problems causing the oil to blow through and coat the intercooler and charge piping, gunking up intake valves and the VANOS system, lowering the effective octane, and generally degrading engine performance. The higher your boost levels the more apparent these problems become.

The solution to this problem has finally arrived. The BMS oil catch can. While there are other catch cans on the market they all fall short in various areas. Some are mounted on the hot/turbo side of the motor preventing proper vapor condensation. Others utilize hoses that are too small and runs that are too long to allow proper PCV ventilation causing internal motor/ring sealing issues. Some have insufficient or no internal baffle system while others have internal baffle systems that are too restrictive. Some even bypass the PCV system altogether venting crankcase gas and odor into the atmosphere. Most are simply repackaged oil catch cans from smaller / lower power motors shoehorned into place in the turbo BMW engine bay.

To solve these problems BMS designed their oil catch can kit from the ground up specifically for the turbo BMW application. It features 100% CNC machining with zero welding for a precision fit and long life. The can itself is guaranteed for the life of the vehicle. The hoses exceed the OEM PCV piping in diameter and that flow rate is maintained throughout the entire oil catch can ensuring no excessive crankcase pressure buildup. The BMS OCC retains the factory fully closed loop PCV operation preventing any PCV vapor from leaking to the atmosphere. The mounting locations are selected to minimize the line length, allow more efficient operation, and retain a stealth look. Install takes around 20 minutes, includes all required hardware, and is 100% reversible. Simply unscrew the base of the can or use the drain plug to safely dispose of captured oil with the rest of your used motor oil during oil changes. Made in the USA.

New transparent oil catch can base now available as an option or is sold separately as an upgrade here.

Requires BMS Billet Intake to fit.

Features & Benefits

• Increases Air Intake Efficiency
• Promotes Engine Longevity
• Non-Clogging Air/Oil Separation Triple Baffle
• Free Flow Solid No Restriction Design
• Retains factory fully closed loop PCV operation
• Large Intake/Outlet No Tapering Down
• Anodized Black Aluminum
• Made in the USA & Guaranteed for Life
• Simply unscrew base every 3-6 months to empty or use the 1/8th NPT drain plug.
• Non-Clogging, No Service Needed Air/Oil Separation Triple Baffle
• High flow to eliminate crankcase pressure caused by more restrictive designs
• Large 16mm+ inlet and outlet exceeds OEM PCV sizing
• Precision CNC Machined from Solid Blocks of High-Grade Aluminum

Vehicle Fitment

BMW 1 Series
• 2016+ F20 F21 (B46/B48 engine) 130i/130iX 120i/120iX 125i/125iX 135i/135iX

BMW 2 Series
• 2017+ F22 F23 (B46/B48 engine) 230i/230iX 225i225iX 220i/220iX

BMW 3 Series
• 2016-2018 F30 F34 (B46/B48 engine) 330i/330iX 325i/325iX 320i/320iX

BMW 4 Series
• 2017+ F32 F33 F36 (B46/B48 engine) 430i/430iX 325i325iX 320i/320iX

Catch can dimensions and specs

Can dimensions with lid: 4.4" (111mm) Tall
Can diameter: 2.5" (63.7mm)
Lid length: Back to nozzle end: 4" (101mm)
Nozzle outer diameter: .75" (19.2mm)
Nozzle inner diameter: 0.669" (17mm) 
Can Fluid Capacity: Up to 5.5 fl oz (162.6 mL)

Install Video

New transparent oil catch can base now available as an option or is sold separately as an upgrade here.

The main advantage of a transparent can is that you can easily see the contents inside. This allows for quick checks on oil levels, contamination, and sludge buildup without needing to open the can.

⚠️  ATTENTION: The optional transparent can base is not suitable for use in regions where temperatures frequently drop to 32°F (0°C) or below.

All sales for Burger Motorsports and Fuel-It! products are final. These items are not eligible for return or exchange under any circumstances. Please ensure compatibility and fitment before placing your order.