Emissions System

Fuel Tank Breather Valve

T#:25075803

Part#: 13907643106

In Stock

Sale - Save 20% $ 68.99

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

$ 55.19 USD

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

$ 55.19 USD

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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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This product was last offered at the strikethrough price on
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

In Stock

Sale - Save 20% $ 26.99

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

$ 21.59 USD

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This product was last offered at the strikethrough price on
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Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...

T#:640206

Part#: 11617501563

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

$ 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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BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit - G2X/G42/A...

T#:49822554

Part#: BMSB58OCCFCDV

Ships on Aug 31, 2026

$ 139.00 USD

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$ 139.00 USD

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Keep crankcase vapors in check and your intake air clean with the BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit for the Gen2 B58. This upgrade ditches the flimsy factory venting in favor of a precision CNC-machined billet oil filler cap and dual-vent fittings engineered to handle increased crankcase pressure under boost. By diverting oil-laden vapors into a catch can instead of back through the intake, this system helps minimize carbon buildup, reduces oily contamination, and promotes more consistent performance as power levels climb. High-quality hoses and fittings ensure a secure, leak-free install that won’t collapse under pressure and maintains a clean, OE-plus appearance in the engine bay. An easy, effective upgrade for B58 enthusiasts looking for cleaner operation, improved engine longevity, and proven performance-focused design

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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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Oil Separator Hose - E46, Z4

T#:579880

Part#: 55080

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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$ 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

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

$ 19.99 USD

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This product was last offered at the strikethrough price on
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$ 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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Vaico Oil Separator Valve - E38, E39

We Price Match - Give Us A Call or Chat!

T#:363292

Part#: 11151705272

In Stock

Sale - Save 25% $ 31.99

This product was last offered at the strikethrough price on
05-02-2026

$ 23.87 USD

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This product was last offered at the strikethrough price on
05-02-2026

$ 23.87 USD

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Connects to the vent tube which is attached to the PCV valve

Oxygen Sensor

T#:55353609

Part#: 11787558054

Special Order: No Guaranteed ETA

$ 134.99 USD

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$ 134.99 USD

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This Meyle pre-catalytic broadband oxygen sensor is a direct replacement for your tired, slow-responding factory sensor.

Meyle Exhaust Gas Temperature Sensor - G30 - B57

T#:55461387

Part#: 3148000073

Special Order: No Guaranteed ETA

$ 61.99 USD

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$ 61.99 USD

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Your ECU relies heavily on the Exhaust Gas Temperature (EGT) sensor to monitor critical exhaust heat before things get out of hand.

Sensor, Exhaust Gas Temperature

T#:55461391

Part#: 3148000070

Special Order: No Guaranteed ETA

$ 59.99 USD

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$ 59.99 USD

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If your turbocharged Ultimate Driving Machine isn’t getting real-time, accurate temperature readouts from the exhaust stream, the ECU instantly pulls timing, limits boost, and drops your car into limp mode

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