Emissions System for BMW 3 Series E91 (2006-2012)

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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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Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z4
Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z...
Rein - Corporate Logo
T#:402018
Part#: 11157559528
In Stock
$ 48.99 USD
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$ 48.99 USD
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Over time this hose can become clogged and blocked up causing running problems. This is a direct factory replacement for the PCV hose.
Rein Crankcase Vent Hose
Rein Crankcase Vent Hose
Rein - Corporate Logo
T#:17804807
Part#: 11157522931
In Stock
$ 44.99

This product was last offered at the strikethrough price on
08-20-2026

$ 38.99 USD
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$ 38.99 USD
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Manufactured with high-quality materials to withstand heat, dirt, oil, and other debris.
Rein Crankcase Ventilation Hose - E60, E61, E90, E91
Rein Crankcase Ventilation Hose - E60, E61, E90, E91
Rein - Corporate Logo
T#:591594
Part#: 11157567802
Ships in 4 Business Days
$ 74.99 USD
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$ 74.99 USD
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From oil separator to oil pan vent tube
OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4
OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4
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
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$ 43.99 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.
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Oil Separator Valve
Oil Separator Valve
Rein - Corporate Logo
T#:594299
Part#: 11617531423
Ships in 4 Business Days
$ 120.81 USD
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$ 120.81 USD
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The oil separator can be replaced on its own but for a complete service we also recommend replacing the oil separator hoses and cleaning the valve cover. Any valve cover or intake manifold work should include a new oil separator valve.
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OEM Rein Oil Separator Vent Hose - E60/1 E90/1 N52
OEM Rein Oil Separator Vent Hose - E60/1 E90/1 N52
Rein - Corporate Logo
T#:402020
Part#: 11617522933
Ships in 2 Business Days
$ 19.99 USD
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$ 19.99 USD
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If your BMW has a damaged vent hose, be sure to replace it to restore functionality of this rather important emissions system.
Febi Rear Oxygen Sensor - Bank 1 Post-Cat
Febi Rear Oxygen Sensor - Bank 1 Post-Cat
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:16375111
Part#: 11787526262
Special Order: No Guaranteed ETA
$ 124.99 USD
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$ 124.99 USD
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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. Febi's Oxygen sensors are high quality and will give you the longest and best performance for the price.
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