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Emissions System

Is your BMW throwing emissions related codes? While we're primarily a BMW performance parts house, we understand the importance of maintaining your emissions system to pass inspection in your area and keep your check engine light off. Pick up your emissions related parts from Turner Motorsport.

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Fuel Tank Breather Valve
Fuel Tank Breather Valve
Bavarian Autosport - Corporate Logo
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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$ 68.99

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VTT B58/S58 Cylinder Head Port Block-Off Kit - BMW B58 Gen1/2/3 (B58/B58TU/B58TU2) & S58 3.0L
VTT B58/S58 Cylinder Head Port Block-Off Kit - BMW B58 Gen1/2/3 (B58/...
Vargas Turbo Technologies - Corporate Logo
T#:49822557
Part#: VTTBS58BLOCK
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$ 29.99 USD
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The VTT B58/S58 Head Port Block-Off kit is designed to either seal off the factory head ports used by the OEM low-side PCV system. These ports in the cylinder head utilize engine vacuum to evacuate crankcase gases, but in the process, can allow oil to enter the intake manifold, leading to valve carbon buildup and other performance issues over time. The Block-Off kit offered by VTT completely seals the factory head ports to prevent oil intrusion and unwanted vacuum leaks. This kit does NOT require any tapping, meaning no metal to get into the engine, etc. You simply tap the plugs into place. Key Features Eliminates oil draw-through into the intake manifold Prevents carbon buildup on intake valves Utilizes precision-machined plugs for boost sealing Fully reversible — Block-offs can be removed if needed No tapping is required. Easy install, by tapping the blocks into place.
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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
Bavarian Autosport - Corporate Logo
T#:640207
Part#: 11617501566
In Stock
Sale - Save 20% $ 32.99

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

$ 26.39 USD
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$ 32.99

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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
Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
Bavarian Autosport - Corporate Logo
T#:638072
Part#: 11617504536
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 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
Bav Auto Vent Hose - From Valve Cover to Oil Separator - E36 E39 Z3 ...
Bavarian Autosport - Corporate Logo
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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$ 26.99

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Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L
Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...
Bavarian Autosport - Corporate Logo
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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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/A90 G2 B58
BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit - G2X/G42/A...
Burger Motorsports - Corporate Logo
T#:49822554
Part#: BMSB58OCCFCDV
Ships on Aug 28, 2026
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$ 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 M60 V8
Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...
Bavarian Autosport - Corporate Logo
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
Oil Separator Hose - E46, Z4
Bavarian Autosport - Corporate Logo
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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$ 24.99

This product was last offered at the strikethrough price on
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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 M52TU
Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...
Bavarian Autosport - Corporate Logo
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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$ 24.99

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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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VTT S58 Cylinder Head Port Check Valve Kit - S58 3.0L
VTT S58 Cylinder Head Port Check Valve Kit - S58 3.0L
Vargas Turbo Technologies - Corporate Logo
T#:49822559
Part#: VTTS58CHECK
Ships in 10 Business Days
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$ 69.99 USD
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$ 69.99 USD
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The VTT S58 Head Port Check Valve Kit is designed to convert the factory head ports used by the OEM low-side PCV system. These ports in the cylinder head utilize engine vacuum to evacuate crankcase gases, but in the process, can allow oil to enter the intake manifold, leading to valve carbon buildup and other performance issues over time. VTT's Billet Check Valve kit converts the head ports into a robust internal PCV system using precision-engineered check valves. These one-way valves allow vacuum to function as intended while blocking boost pressure from entering the crankcase or charge tract.
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Vargas PCV Delete Kit - Cap W/ -10ORB Plug & VTA Catch Can - BMW S55 Engine
Vargas PCV Delete Kit - Cap W/ -10ORB Plug & VTA Catch Can - BMW S55 ...
Vargas Turbo Technologies - Corporate Logo
T#:52164893
Part#: S55PCVCPCCVTA
Ships in 10 Business Days
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$ 399.99 USD
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$ 399.99 USD
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The VTT VTA Catch Can Kit is a comprehensive crankcase ventilation solution specifically tailored for the BMW S55 engine.
VTT B58 Cylinder Head Port Check Valve Kit - B58 Gen1/2/3 (B58/B58TU/B58TU2)
VTT B58 Cylinder Head Port Check Valve Kit - B58 Gen1/2/3 (B58/B58TU/...
Vargas Turbo Technologies - Corporate Logo
T#:49822558
Part#: VTTB58CHECK
Ships in 10 Business Days
New Item
$ 69.99 USD
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$ 69.99 USD
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The VTT B58 Head Port Check Valve Kit is designed to convert the factory head ports used by the OEM low-side PCV system. These ports in the cylinder head utilize engine vacuum to evacuate crankcase gases, but in the process, can allow oil to enter the intake manifold, leading to valve carbon buildup and other performance issues over time. VTT's Billet Check Valve kit converts the head ports into a robust internal PCV system using precision-engineered check valves. These one-way valves allow vacuum to function as intended while blocking boost pressure from entering the crankcase or charge tract.
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VTT Low-Profile Crankcase Vent Adapter -16ORB - BMW S58, B58TU
VTT Low-Profile Crankcase Vent Adapter -16ORB - BMW S58, B58TU ...
Vargas Turbo Technologies - Corporate Logo
T#:51672705
Part#: VTT-S/B58-LP-CC-
Ships in 10 Business Days
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$ 41.99 USD
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$ 41.99 USD
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The VTT Low-Profile Crankcase Vent Adapter is the definitive solution for high-boost BMW builds where hood clearance is a premium.

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