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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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Engine Crankcase Breather Element
Engine Crankcase Breather Element
5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
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Hengst - Corporate Logo
T#:35795496
Part#: 11617533400
In Stock
$ 41.99 USD
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$ 41.99 USD
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Commonly referred to as the "oil separator" or PCV URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.
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Oil Separator Valve
Oil Separator Valve
5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
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Hengst - Corporate Logo
T#:22064588
Part#: AS819M
In Stock
$ 41.99

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

$ 31.99 USD
Limited Qty Sale
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$ 41.99

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

$ 31.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Add to Wish List
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.
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Vitesco Oxygen Sensor/Lambda Probe - 415mm - F3X 328d, E70 35d, F15 xDrive35d
Vitesco Oxygen Sensor/Lambda Probe - 415mm - F3X 328d, E70 35d, F15 x...
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Vitesco Technologies - Corporate Logo
T#:33446263
Part#: 13628589844
In Stock
$ 442.99 USD
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$ 442.99 USD
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Oxygen sensors measure exhaust oxygen. Their signals are used by the vehicle computer to adjust the air/fuel ratio and test vehicle emissions. Degraded oxygen sensors reduce engine performance and fuel efficiency, and increase harmful tailpipe emissions. They can also turn on the Check Engine Light and cause a car to fail an emissions test.
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Vitesco Oxygen Sensor/Lambda Probe - 915mm - BMW E90 335d, E70 35d, F3x 328d, F25 28dX
Vitesco Oxygen Sensor/Lambda Probe - 915mm - BMW E90 335d, E70 35d, F...
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Vitesco Technologies - Corporate Logo
T#:33446261
Part#: 13628589846
Ships in 1-2 days
$ 546.98 USD
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$ 546.98 USD
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Oxygen sensors are used to adjust the air/fuel ratio and test vehicle emissions. Degraded oxygen sensors reduce engine performance and fuel efficiency, and increase tailpipe emissions. They can cause a car to fail an emissions test. Restore your emissions system with a new NOx Sensor from Vitesco.
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Vitesco Oxygen Sensor Kit - F30/31 N47, E70 M57
Vitesco Oxygen Sensor Kit - F30/31 N47, E70 M57
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Vitesco Technologies - Corporate Logo
T#:33446269
Part#: 13628589844KT
Ships in 1-2 days
$ 989.99 USD
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$ 989.99 USD
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Includes both rear NOx Sensors for your BMW. A Vitesco Technologies Kit.
Oil Separator Valve
Oil Separator Valve
5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Hengst - Corporate Logo
T#:22064593
Part#: AS826M-D851
Ships on Nov 23, 2026
$ 62.99 USD
Free Shipping on orders $49 and up
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$ 62.99 USD
Free Shipping on orders $49 and up
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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.
Show More Show Less
Nitrogen Oxide Sensor (NOx Sensor) - Rear - E90 335d, F25 28dX
Nitrogen Oxide Sensor (NOx Sensor) - Rear - E90 335d, F25 28dX ...
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Vitesco Technologies - Corporate Logo
T#:33446273
Part#: 13628589845
Back Ordered
$ 394.99 USD
Free Shipping on orders $49 and up
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$ 394.99 USD
Free Shipping on orders $49 and up
Add to Wish List
A degraded NOx Sensor can cause your vehicle to have a check engine light and poor performance. Restore your emissions system with a new NOx Sensor from Vitesco!

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