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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

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
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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05-03-2026

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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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AdBlue DEF Fluid - 9.46 Liters
AdBlue DEF Fluid - 9.46 Liters
Genuine Volkswagen Audi - Corporate Logo
T#:22558987
Part#: GUS052910A3
In Stock
$ 34.86 USD
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$ 34.86 USD
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For BMW enthusiasts committed to optimizing their vehicle's performance, the AdBlue Diesel Exhaust Fluid (DEF) - 9.46 Liters is the perfect solution. Engineered to enhance BMW diesel engines' efficiency, this DEF fluid ensures that your vehicle remains compliant with emission standards while operating at its peak.

  • Exceptional Purity: The AdBlue DEF Fluid - 9.46 Liters offers superior purity, safeguarding your BMW's exhaust system and reducing harmful emissions.
  • Emissions Compliance: Maintain your BMW's compliance with strict emission regulations, ensuring you can drive with peace of mind.
  • Extended Range: With 9.46 liters of DEF fluid, you'll enjoy an extended range before requiring a refill, providing convenience for your journeys.
  • Effortless Refilling: The user-friendly design of the container makes refilling your DEF reservoir a hassle-free task.
  • BMW Compatibility: This DEF fluid is tailored to meet BMW's stringent requirements, assuring compatibility with your vehicle.

Choose the AdBlue DEF Fluid - 9.46 Liters to enhance your BMW's efficiency and environmental responsibility. Drive confidently, knowing your vehicle is optimized for peak performance and emissions compliance.

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Radium Engineering Catch can kit - E9X 335i E8X 135i
Radium Engineering Catch can kit - E9X 335i E8X 135i
Radium Engineering - Corporate Logo
T#:577808
Part#: 20-0373
In Stock at Vendor
$ 259.99 USD
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$ 259.99 USD
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Oil catch cans prevent elevated oil blow by caused by aggressive driving. The Radium Engineering catch can uses a closed loop system and is emissions and track legal, and by not venting to atmosphere avoids any oil smells from getting into the cabin. Kit includes Billet catch can Mounting bracket 10AN hose fittings and adapters 5/8" PCV hose Mounting hardware
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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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$ 26.99

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05-03-2026

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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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Radium Engineering Universal Catch Can Petcock Drain Kit
Radium Engineering Universal Catch Can Petcock Drain Kit
Radium Engineering - Corporate Logo
T#:27905095
Part#: 20-0024
In Stock at Vendor
$ 28.99 USD
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$ 28.99 USD
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Includes:

Anodized 4AN ORB Barbed Adapter Fitting, Black Ball Valve with 1/4" Barbs, 125psi @ 140F 4 feet of Radium 1/4" PCV Hose

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

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

$ 21.59 USD
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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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$ 47.99

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05-03-2026

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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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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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$ 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
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.
Vaico Oil Separator Valve - E38, E39
Vaico Oil Separator Valve - E38, E39
We Price Match - Give Us A Call or Chat!
Vaico - Corporate Logo
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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$ 31.99

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

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

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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Dinan Replacement Air Pump Filter - E60 M5, E63/E64 M6
Dinan Replacement Air Pump Filter - E60 M5, E63/E64 M6
Call In Or Chat For Best Price!
Dinan - Corporate Logo
T#:398512
Part#: D401-0014
Ships in 5 Business Days
Sale - Save 10% $ 95.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 86.30 USD
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$ 95.99

This product was last offered at the strikethrough price on
07-31-2026

$ 86.30 USD
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Replacement filter that is found on the back of the air pump housing.
Vaico Vacuum Pipe - BMW F22/23 F3X F07/10 F25/26 N20 N26 2.0L
Vaico Vacuum Pipe - BMW F22/23 F3X F07/10 F25/26 N20 N26 2.0L ...
Vaico - Corporate Logo
T#:41492596
Part#: 11157603816
Special Order: No Guaranteed ETA
$ 28.99 USD
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$ 28.99 USD
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Eliminate vacuum leaks with this replacement vacuum pipe for your N20 / N26 powered BMW - Connects to the front passenger side of the N20 engine block

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