Emissions System for BMW 3 Series E90 (2006-2011)

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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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Bosch - Corporate Logo
T#:14663
Part#: 11787539125
In Stock
$ 155.99

This product was last offered at the strikethrough price on
05-07-2026

$ 111.99 USD
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$ 111.99 USD
Free Shipping on orders $49 and up

The oxygen sensor is vital to the performance and drivability of your car. The engine computer relies on data from the sensor to make adjustments in engine efficiency and performance. When your BMW oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing -- resulting in poor performance, poor gas mileage, and increased pollution. Make sure your BMW engine performs as it should, and doesn't use more fuel than it needs to, by simply changing your oxygen sensor today. There is no lifespan on O2 sensors but there are several fault codes that indicate a failed sensor (O2 monitoring, cat efficiency, O2 heating circuit, O2 readiness, and others). The O2 sensor is heated and has a self-calibration feature so once you get the codes or feel performance has suffered, a new sensor is a good starting point to get you back to peak performance.

This is a Bosch O2 sensor - also known as a Lambda probe. Bosch is an OEM supplier to BMW.

Position: after the catalytic converter (post-cat).

This item fits the following BMWs:
2008-2013 E90 E92 E93 BMW M3 Sedan, Coupe, Convertible

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BMW N54 3.0L Blow-By Vent Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594297
Part#: 11157553949
In Stock
$ 40.99 USD
Free Shipping on orders $49 and up
This hose directs the oil & combustion vapors from the valve cover and directs them to the intake manifold where they are put through combustion again in order to reduce emissions. When installing one of our N54 Oil Catch Cans the connections on this hose will often break. We recommend replacing this hose at the same time as your catch can. When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
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Rein Crankcase Vent Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17804807
Part#: 11157522931
In Stock
$ 44.99

This product was last offered at the strikethrough price on
10-20-2026

$ 38.99 USD
Free Shipping on orders $49 and up
$ 38.99 USD
Free Shipping on orders $49 and up
Manufactured with high-quality materials to withstand heat, dirt, oil, and other debris.

Secondary Air Injection Hose - Pump To Valve
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594379
Part#: 11727557910
In Stock
$ 36.09

This product was last offered at the strikethrough price on
07-17-2026

$ 35.99 USD
Free Shipping on orders $49 and up
$ 35.99 USD
Free Shipping on orders $49 and up
Connects the air pump to the cold start valve.

Burgaflex - Corporate Logo
T#:57725177
Part#: 11157522931
In Stock
New Item
$ 52.99 USD
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Maintain peak engine health and keep your crankcase ventilation system operating seamlessly with this high-grade engine breather hose from Burgaflex.
Bosch - Corporate Logo
T#:14686
Part#: 11787589475
In Stock
$ 223.99

This product was last offered at the strikethrough price on
04-30-2026

$ 172.99 USD
Free Shipping on orders $49 and up
$ 172.99 USD
Free Shipping on orders $49 and up

The oxygen sensor is vital to the performance and drivability of your car. The engine computer relies on data from the sensor to make adjustments in engine efficiency and performance. When your BMW oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing -- resulting in poor performance, poor gas mileage, and increased pollution. Make sure your BMW engine performs as it should, and doesn't use more fuel than it needs to, by simply changing your oxygen sensor today. There is no lifespan on O2 sensors but there are several fault codes that indicate a failed sensor (O2 monitoring, cat efficiency, O2 heating circuit, O2 readiness, and others). The O2 sensor is heated and has a self-calibration feature so once you get the codes or feel performance has suffered, a new sensor is a good starting point to get you back to peak performance. Bosch's Oxygen sensors are high quality and will give you the the longest and best performance for the price.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMW Chassis:
E82,E90,E92,E93,F30,F34

Fits BMW Engines including:
N55 - up to 08/2013

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Rein - Corporate Logo
T#:402018
Part#: 11157559528
In Stock
$ 48.99

This product was last offered at the strikethrough price on
10-22-2026

$ 41.69 USD
Free Shipping on orders $49 and up
$ 41.69 USD
Free Shipping on orders $49 and up
Over time this hose can become clogged and blocked up causing running problems. This is a direct factory replacement for the PCV hose.
Bosch - Corporate Logo
T#:583740
Part#: 18307807206
Ships in 2 Business Days
$ 380.99

This product was last offered at the strikethrough price on
10-17-2026

$ 362.99 USD
Free Shipping on orders $49 and up
$ 362.99 USD
Free Shipping on orders $49 and up
The Selective Catalytic Reduction (SCR) system on your diesel BMW reduces exhaust emissions by injecting diesel exhaust fluid (a mixture of urea and water) into the exhaust to neutralize pollutants. If your tank is empty or your metering valve has failed, your car will not start until the problem is remedied. Replace yours with an OEM Bosch to restore your emissions system and get your car back on the road! Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products. As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:13029
Part#: 11617559530
Ships in 4 Business Days
$ 66.99

This product was last offered at the strikethrough price on
05-07-2026

$ 43.99 USD
Free Shipping on orders $49 and up
$ 43.99 USD
Free Shipping on orders $49 and up
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.
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Rear Oxygen Sensor Set - N52, N54
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55353594
Part#: 11787545074/5KT2
In Stock
New Item
$ 366.99 USD
Free Shipping on orders $49 and up
Sluggish oxygen sensors do a lot more than just light up your dashboard with an annoying Check Engine Light—they directly choke your BMW’s performance.
Front Oxygen Sensor Set - E9x, E82, E88, Z4
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55317713
Part#: BFR1/2O2SKT2
In Stock
New Item
$ 400.99

This product was last offered at the strikethrough price on
07-14-2026

$ 335.99 USD
Free Shipping on orders $49 and up
$ 335.99 USD
Free Shipping on orders $49 and up
Over time, that degradation robs your BMW of its crisp throttle response, tanks your fuel economy, and leaves you staring at a failed emissions ticket
Packaged by Turner - Corporate Logo
T#:55857772
Part#: 11787589475KT2
In Stock
New Item
$ 342.99 USD
Free Shipping on orders $49 and up
Extreme exhaust heat and carbon buildup degrade your factory oxygen sensors over time, sending lazy data to your DME and robbing you of performance.


Bosch Oxygen Sensors - Bank 1 And 2 Pre-Cat - N52
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:56110313
Part#: 11787558055KT
In Stock
New Item
$ 307.99

This product was last offered at the strikethrough price on
08-13-2026

$ 304.99 USD
Free Shipping on orders $49 and up
$ 304.99 USD
Free Shipping on orders $49 and up
Your engine's air fuel ratio needs to be dead on. Worn out factory pre-cat oxygen sensors delay vital data to the DME, leading to sub optimal fueling, lost horsepower, and dangerous hesitation under load.
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OEM Rein Oil Separator Vent Hose - E60/1 E90/1 N52
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:402020
Part#: 11617522933
Ships in 2 Business Days
$ 19.99 USD
Free Shipping on orders $49 and up
If your BMW has a damaged vent hose, be sure to replace it to restore functionality of this rather important emissions system.
Bosch - Corporate Logo
T#:596905
Part#: F01C600252
Ships in 2 Business Days
$ 721.60

This product was last offered at the strikethrough price on
10-19-2026

$ 721.59 USD
Free Shipping on orders $49 and up
$ 721.59 USD
Free Shipping on orders $49 and up
A common source of issues, the DEF Heater Assembly can fail, requiring you to replace the entire DEF Active Tank. With this OEM Bosch DEF heater assembly, you can repair your Active Tank without needing to replace the entire tank, saving you a significant amount of money on repairs.
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Vitesco Technologies - Corporate Logo
T#:33446261
Part#: 13628589846
Ships in 1-2 days
$ 546.98 USD
Free Shipping on orders $49 and up
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 Technologies - Corporate Logo
T#:33446273
Part#: 13628589845
Back Ordered
$ 394.99 USD
Free Shipping on orders $49 and up
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!