Emissions System

Fuel Tank Breather Valve

T#:25075803

Part#: 13907643106

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$ 55.19 USD

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Large Aluminum Oil Catch Can

T#:597051

Part#: MMOCCLA

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$ 127.99 USD

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$ 127.99 USD

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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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Mishimoto Universal Catch Can Kit - Carbon Fiber

T#:372557

Part#: MMOCCCF

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$ 162.99 USD

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Universal kit with a catch can and rubber hose; for retrofitting on a variety of vehicles. Carbon fiber catch can prevents a harmful buildup of oil inside of the turbocharger, intake manifold, intercooler and piping. Separates oil particles from PCV/CCV air Defends intercooler, intake system, and essential components from oil blow-by Made from lightweight carbon fiber Compact design makes for easy engine bay placement Checking fluid levels made easy with built in sight tube Comes complete with mounting bracket, hose, all necessary clamps, fittings, and mounting hardware Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

T#:640207

Part#: 11617501566

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This product was last offered at the strikethrough price on
05-03-2026

$ 26.39 USD

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BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace this and all the other components of the oil separator system to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

T#:638072

Part#: 11617504536

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05-03-2026

$ 21.59 USD

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This is the BMW crankcase return line that goes from the intake manifold to the top CCV connecting hose. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Bav Auto Vent Hose - From Valve Cover to Oil Separator - E36 E39 Z3 ...

T#:579869

Part#: 54546

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$ 21.59 USD

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$ 21.59 USD

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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MIN...

T#:39971046

Part#: BM-0006-BCG

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$ 65.00 USD

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$ 65.00 USD

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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MINI Models is a premium exterior upgrade crafted from genuine carbon fiber, designed to enhance the aggressive styling and performance aesthetic of compatible BMW and MINI vehicles with an easy, OEM-fit installation.

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N54 Mishimoto Baffled Oil Catch Can

T#:383384

Part#: MMBCCN5406CBE

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$ 253.99 USD

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$ 253.99 USD

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Oil venting and circulation continues to be a problem on BMW engines and now even more so on the turbocharged N54 and N55 engines. The existing stock system does a very poor job of separating fluid and vapor and this leads to an oily film or even small pools of oil throughout the turbos and intake. We're seeing a lot more 135 and 335 cars with drivability and performance issues because oil has sneaked by the ring seals and is coating the intake piping, intercooler, intake valves, and other critical areas. The problem is worsened with higher boost levels. Oil is excellent for lubricating moving parts but terrible when it gets into the combustion chamber, effectively lowering the octane rating and reducing performance. Our own shop has gone the extra step and offers media and chemical blasting of the intake valves to strip away the oily buildup we have seen. Our shop also strongly recommends an oil catch can be installed in the line for the crankcase vent. The oil catch can traps oil as it leaves the valve cover and holds it in a canister. This catch can is located on the cooler side of the engine where the oil will condense easier and stay in the can. Whatever minimal vapors are left over in the oil is then vented back through the canister and into the intake where it is safe to be burned up in the engine or recirculated back through the system again. This is the way the system was designed! At each oil change simply unscrew the canister and empty the trapped oil with your regular used oil. Installing one of these will avoid costly repairs in the future and help maintain your boost and performance. It's one of the smartest modifications you can make because it demonstrates a well-thought out tuning strategy and care for the condition of your engine. The Mishimoto Oil Catch Can is made from aluminum and with a stealthy black anodized finish. It installs on the cooler side of the engine with a dedicated bracket and new oversized vent lines. The location is key as heat will evaporate the oil and send too much vapor back into the engine (where cooler air will turn it back into fluid). Note: Since the crankcase vent system is considered part of the overall emissions system, installing this may be a violation of local, state, and federal laws. While exemptions are made for track/race and off-road use, check with your local state inspection facility on using this in street-driven vehicles. This item fits the following BMWs with the N54 twin-turbo engine: 2008-2010 E82 E88 BMW 135i 2007-2010 E9X BMW 335i 335xi 2006-2010 E60 BMW 535i 535xi WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...

T#:640206

Part#: 11617501563

In Stock

Sale - Save 20% $ 47.99

This product was last offered at the strikethrough price on
05-03-2026

$ 38.39 USD

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$ 47.99

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$ 38.39 USD

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An integral part of the emissions system, the PCV valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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N20/N26 Mishimoto Baffled Oil Catch Can

T#:389788

Part#: MMBCCN20N2612CB

In Stock at Vendor

$ 278.95 USD

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$ 278.95 USD

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il venting and circulation continues to be a problem on BMW engines and the N20 engine is not immune from this. The existing stock system does a poor job of separating fluid and vapor and this leads to an oily film or even small pools of oil throughout the turbos and intake. Performance issues are caused by oil sneaking by the ring seals and is coating the intake piping, intercooler, intake valves, and other critical areas. The problem is worsened with higher boost levels. Oil is excellent for lubricating moving parts but terrible when it gets into the combustion chamber, effectively lowering the octane rating and reducing performance. Our own shop has gone the extra step and offers media and chemical blasting of the intake valves to strip away the oily buildup we have seen. Our shop also strongly recommends an oil catch can be installed in the line for the crankcase vent. The oil catch can traps oil as it leaves the valve cover and holds it in a canister. This catch can is located on the cooler side of the engine where the oil will condense easier and stay in the can. Whatever minimal vapors are left over in the oil is then vented back through the canister and into the intake where it is safe to be burned up in the engine or recirculated back through the system again. This is the way the system was designed! At each oil change simply unscrew the canister and empty the trapped oil with your regular used oil. Installing one of these will avoid costly repairs in the future and help maintain your boost and performance. It's one of the smartest modifications you can make because it demonstrates a well-thought out tuning strategy and care for the condition of your engine. The Mishimoto Oil Catch Can is made from aluminum and with a stealthy black anodized finish. It installs on the cooler side of the engine with a dedicated bracket and new oversized vent lines. The location is key as heat will evaporate the oil and send too much vapor back into the engine (where cooler air will turn it back into fluid). Note: Since the crankcase vent system is considered part of the overall emissions system, installing this may be a violation of local, state, and federal laws. While exemptions are made for track/race and off-road use, check with your local state inspection facility on using this in street-driven vehicles. This item fits the following BMWs with the N20 or N26 turbo engine: 2014-2016 F2X 228i 228i xDrive 2012-2016 F3X 320i 320i xDrive 328i 328i xDrive 428i 428i xDrive WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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FTP Motorsport Oil Catch Can - F3X N20 2.0L

T#:586831

Part#: SG80039-3

Special Order: No Guaranteed ETA

$ 200.00 USD

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$ 200.00 USD

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Modern engines are designed to consume no oil. Even with advanced technology, sometimes an old fashion solution is the best kind. Oil consumption is a leading cause of poor fuel economy, failed emissions, and exhaust smoke. This catch can kit comes complete and ready to separate air and oil so your engine can breathe properly again. Features: Increases Air Intake Efficiency Promotes Engine Longevity Non-Clogging Air/Oil Separation Double Baffle Free Flow Solid No Restriction Design Large Intake / Exhaust No Tapering Down Stealth Mounting on Cool Side of the Motor Anodized Black Lightweight Aluminum

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Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...

T#:639843

Part#: 11617501562

Special Order: No Guaranteed ETA

Sale - Save 15% $ 59.99

This product was last offered at the strikethrough price on
05-03-2026

$ 50.99 USD

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An integral part of the emissions system, the PVC valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. Often split from underhood heat and age, this vents excess oil into the engine compartment. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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FTP Motorsport PCV Valve Upgraded Replacement - N54

T#:583063

Part#: SG84036

Special Order: No Guaranteed ETA

$ 60.00 USD

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$ 60.00 USD

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The OEM plastic PCV valve does not hold pressure well even when brand new. What this means is that when the turbochargers are making boost, pressurized air can become forced backwards through the valve and back into the crankcase. Depending on the condition of your PCV valve this can range from irritating to dangerous as a pressurized case can cause all sorts of issues. Additionally, if your valve cover is cracked due to age or has a bad gasket you are more than likely experiencing a pressure leak either internally or externally. These two features can cause even a low-mileage N54 to run like a tired elephant, sometimes even unlocking a special bonus function known as "Limp Mode". The solution is to replace any failed components and upgrade the PCV valve to something more capable withstanding the abuse of a turbocharged environment. FTP Motorsport has you covered with this solid aluminum valve assembly. It is essentially the same thing that came in your car from the factory, made out of aluminum. The internal components have also been made to fit tighter and outlast the life of an off the shelf replacement. No, this won't be the very last PCV valve you buy, but it will most certainly alleviate a lot of headaches common to N54 owners. And if you're tuned, big twin or single swapped you need one of these yesterday.

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Oil Separator Hose - E46, Z4

T#:579880

Part#: 55080

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Sale - Save 20% $ 24.99

This product was last offered at the strikethrough price on
05-03-2026

$ 19.99 USD

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Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.

Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...

T#:640502

Part#: 11617504535

In Stock

Sale - Save 20% $ 24.99

This product was last offered at the strikethrough price on
05-03-2026

$ 19.99 USD

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Runs from the top of the oil separator up to rear of the intake manifold. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Condor Speed Shop M20 Coolant block off plate - E30 E28 E34 E21 E12 ...

T#:577861

Part#: M20BLK

Ships in 3 Business Days

$ 39.99 USD

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$ 39.99 USD

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Condor Speed Shop use's these in all of their spec cars to simplify the cooling system. These plates bolt to the back of the M20 head allowing you to delete the heater hose connection. Kit includes: 1 Block Off Plate 1 Gasket 1 Hose Block Off 2 Bolts 2 Washers This item fits: M20B20 1977–1981 E12 520/6 1979–1983 E21 320/6 1982–1984 E28 520 1982–1988 E28 520i 1983–1992 E30 320i 1988–1990 E34 520i M20B23 1977–1982 E21 323i 1982–1985 E30 323i M20B25 1986–1993 E30 325i, 325iS, 325iC and 325iX 1989–1990 E34 525i 1988–1991 Z1 M20B27 1982–1988 E30 325/325e/325es 1982–1988 E28 525e (or 528e in the US)

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AutoTecknic Dry Carbon Competition Oil Cap Cover - Type 2 - For Vario...

T#:39971048

Part#: BM-0008

Ships in 8 Business Days

$ 64.99 USD

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$ 64.99 USD

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A precision-crafted dry carbon fiber upgrade that enhances the engine bay of compatible BMW and MINI vehicles with a lightweight, motorsport-inspired design and easy OEM-style installation

FTP Motorsports - F2X F3X N55 Oil Catch Tank Kit (135i ,235i , 335i ,...

T#:36574514

Part#: SG80053

Special Order: No Guaranteed ETA

$ 170.00 USD

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$ 170.00 USD

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Sub-Categories

Fuel Tank Breather Valve

Large Aluminum Oil Catch Can

Mishimoto Universal Catch Can Kit - Carbon Fiber

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

Bav Auto Vent Hose - From Valve Cover to Oil Separator - E36 E39 Z3 ...

AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MIN...

N54 Mishimoto Baffled Oil Catch Can

Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...

N20/N26 Mishimoto Baffled Oil Catch Can

FTP Motorsport Oil Catch Can - F3X N20 2.0L

Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...

FTP Motorsport PCV Valve Upgraded Replacement - N54

Oil Separator Hose - E46, Z4

Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...

Condor Speed Shop M20 Coolant block off plate - E30 E28 E34 E21 E12 ...

AutoTecknic Dry Carbon Competition Oil Cap Cover - Type 2 - For Vario...

FTP Motorsports - F2X F3X N55 Oil Catch Tank Kit (135i ,235i , 335i ,...

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