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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Genuine BMW Leak Detection Pump
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Genuine BMW - Corporate Logo
T#:367881
Part#: 16137193479
Ships in 3 Business Days
7% off MSRP $ 266.99

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$ 248.99 USD
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7% off MSRP
$ 266.99

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

$ 248.99 USD
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Upgrade your BMW's fuel containment system with the Turner Motorsport Genuine BMW Leak Detection Pump. This essential component tests for vapor leaks to the atmosphere, ensuring optimal performance. A failed pump can trigger the check engine light, compromising the vehicle's efficiency.

Key Benefits:

  • Genuine BMW quality for precise fit and reliable performance.
  • Tests fuel containment system for vapor leaks.
  • Helps avoid triggering the check engine light.

Ensure the health of your BMW's fuel system with the Turner Motorsport Genuine BMW Leak Detection Pump.

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OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4
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Rein - Corporate Logo
T#:13029
Part#: 11617559530
Ships in 1-2 days
Sale - Save 8% $ 66.99

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

$ 61.48 USD
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$ 66.99

This product was last offered at the strikethrough price on
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$ 61.48 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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Vapor Canister Filter - E90, E91, E92, E93
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Genuine BMW - Corporate Logo
T#:45298
Part#: 16136765755
Ships in 3 Business Days
7% off MSRP $ 320.99

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

$ 298.99 USD
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7% off MSRP
$ 320.99

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

$ 298.99 USD
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Genuine BMW Exhaust Steam Pipe -
This item fits the following BMW Chassis:
E90,E92,E93

Fits BMW Engines including:
N51,N52,N52N


Crankcase Oil Separator - E90 325i/330i, E60 525i/530i, E85 Z4 3.0i/3...
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Genuine BMW - Corporate Logo
T#:13027
Part#: 11617531423
Ships in 3 Business Days
7% off MSRP $ 148.99

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$ 138.99 USD
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7% off MSRP
$ 148.99

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

$ 138.99 USD
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The BMW N52 engine was deisgned with a crankcase vent system that relies on a heated oil separator valve to separate vapor from the liquid oil. Under ideal circumstances, the oil vapor would pass back into the intake and get burned up during normal combustion. The liquid oil would follow a path back down into the oil pan and be reused. This system is environmentally friendly but plagued with problems. The heating elements can fail or solid oil and carbon particles can block the oil separator valve. With no escape, the oil will continue to pool and collect in the valve cover or make its way into the combustion chamber leading to excessive oil consumption, blue smoke from the exhaust, idle and running issues. These issues are worse in colder climates where the freezing temperatures create a oil sludge condition that is impossible to clear. Thankfully, the CCV is replaceable on the early N52 engines (2006) and should be inspected during a major service and any time the valve cover is off. Oil can also back up into the throttle body, which is easier to check than the oil separator itself. Later N52 engines do not have a serviceable oil vent as it is integrated into the valve cover and not a separate part.

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.

This item fits the following BMWs:
2006-2011 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2012 E91 BMW 325xi - Wagon
2006-2007 E60 BMW 525i 525xi 530i 530xi
2006-2008 E85 BMW Z4 3.0i Z4 3.0si
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FAE Front Oxygen Sensor - Bank 1 Pre-Cat - E60, E61, E82, E88, E90, E...
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FAE - Corporate Logo
T#:583150
Part#: 11787558055
Ships on Jul 23, 2026
$ 117.99 USD
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$ 117.99 USD
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Fuel control and emissions control sensor
Rear Bank 2 Post-Cat Oxygen Sensor - 490mm - E70 E83 E82/88 E9X (N5X ...
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Meyle - Corporate Logo
T#:4934915
Part#: 3148030031
Ships on Nov 12, 2026
$ 112.99 USD
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$ 112.99 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. This oxygen sensor for BMW's with the N52, N54, and N55 3.0L engines. This 490mm bank 2 oxygen sensor is mounted after the catalytic converter.
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Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm) - Priced Eac...
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ECS - Corporate Logo
T#:637408
Part#: 028092ECS11AKT
In Stock
Sale - Save 25% $ 3.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2.99 USD
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$ 3.99

This product was last offered at the strikethrough price on
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$ 2.99 USD
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Upgrade your exhaust system with the Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm). This high-quality weld bung is made from stainless steel, ensuring durability and resistance to corrosion. It features M18x1.5mm threads, making it compatible with most oxygen sensors. Perfect for custom exhaust setups or replacing damaged bungs, this weld bung is a must-have for any automotive enthusiast.

  • Made from high-quality stainless steel for durability and corrosion resistance
  • M18x1.5mm threads ensure compatibility with most oxygen sensors
  • Ideal for custom exhaust setups or replacing damaged bungs
  • Essential for automotive enthusiasts looking to upgrade their exhaust system
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Bremmen Parts O Ring
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Bremmen Parts - Corporate Logo
T#:558205
Part#: 11617533329
In Stock
Sale - Save 30% $ 6.99

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

$ 4.89 USD
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$ 6.99

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Seals the PCV angle connector to the intake manifold

1.5mm X 51mm Metric Buna-N 70 O-ring
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ECS - Corporate Logo
T#:388889
Part#: N1.50X051
In Stock
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This product was last offered at the strikethrough price on
06-13-2026

$ 4.49 USD
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$ 5.99

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$ 4.49 USD
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1.5mm X 51mm Metric Buna-N 70 O-ring is the perfect sealing solution for various industrial applications. Made from high-quality Buna-N material, this O-ring provides reliable sealing performance, ensuring leak-free connections. With its metric sizing and 70 durometer hardness, it offers versatility and durability for a wide range of uses.

  • High-quality Buna-N material
  • Reliable sealing performance
  • Metric sizing for versatility
  • 70 durometer hardness for durability
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80 Piece Vacuum Cap Assortment
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Titan - Corporate Logo
T#:641955
Part#: TIT45252
In Stock
$ 14.99 USD
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Great for capping unused vacuum lines.
Rear Oxygen Sensor Set - N52, N54
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Packaged by Turner - Corporate Logo
T#:55353594
Part#: 11787545074/5KT2
In Stock
New Item
$ 366.99 USD
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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.
Victor Reinz Secondary Air Pump Valve Gasket - E60, E63, E64, E65, E9...
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Victor Reinz - Corporate Logo
T#:375264
Part#: 11727506214
In Stock
$ 7.30

This product was last offered at the strikethrough price on
05-29-2026

$ 7.26 USD
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$ 7.26 USD
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Goes between the valve and intake tube


Universal Vortex Breather Catch Can
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034Motorsport - Corporate Logo
T#:587831
Part#: 034-101-4000
Ships in 3 Business Days
Sale - Save 10% $ 153.00

This product was last offered at the strikethrough price on
06-28-2026

$ 137.70 USD
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$ 153.00

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$ 137.70 USD
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OEM Rein Oil Separator Vent Hose - E60/1 E90/1 N52
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Rein - Corporate Logo
T#:402020
Part#: 11617522933
Ships in 2 Business Days
Sale - Save 5% $ 19.99

This product was last offered at the strikethrough price on
06-29-2026

$ 18.99 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.
Sealing Grommet
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Genuine BMW - Corporate Logo
T#:45137
Part#: 16131183912
In Stock at Vendor
$ 7.99 USD
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Genuine BMW Sealing Grommet
This item fits the following BMW Chassis:
E39 M5,E46 M3,E70 X5M,E71 X6M,E82 1M Coupe,E85 Z4M,E38,E39,E46,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

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Oil Separator Valve
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Rein - Corporate Logo
T#:594299
Part#: 11617531423
Ships in 4 Business Days
Sale - Save 5% $ 120.81

This product was last offered at the strikethrough price on
06-29-2026

$ 114.77 USD
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Sale - Save 5%
$ 120.81

This product was last offered at the strikethrough price on
06-29-2026

$ 114.77 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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Crankcase Oil Separator and Vent Hose Kit - E90 325xi/330xi, E60 525x...
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Packaged by Turner - Corporate Logo
T#:221962
Part#: TMS221962
Ships in 3 Business Days
$ 455.99 USD
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$ 455.99 USD
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The BMW N52 engine was deisgned with a crankcase vent system that relies on a heated oil separator valve to separate vapor from the liquid oil. Under ideal circumstances, the oil vapor would pass back into the intake and get burned up during normal combustion. The liquid oil would follow a path back down into the oil pan and be reused. This system is environmentally friendly but plagued with problems. The heating elements can fail or oil and carbon particles can block the oil separator valve. With no escape, the oil will continue to pool and collect in the valve cover or make its way into the combustion chamber leading to excessive oil consumption, blue smoke from the exhaust, idle and running issues. These issues are worse in colder climates where the freezing temperatures create an oil sludge condition that is impossible to clear. The plastic hoses can become brittle and crack which leads to vacuum leaks and oil leaks. Thankfully, the CCV is replaceable on the early N52 engines (2006 and some 2007 models) and should be inspected during a major service and any time the valve cover is off. Oil can also back up into the throttle body, which is easier to check than the oil separator itself. Later N52 engines do not have a serviceable oil vent as it is integrated into the valve cover and not a separate part.

This is a kit containing the oil separator, the vent hoses, and the intake manifold gaskets that are done during a typical oil separator replacement. Complete kit includes:
  • 11617531423, Genuine BMW oil separator
  • 11617559530, vent hose
  • 11157522931, oil separator hose
  • 11157567801, return hose
  • 11157537701, extraction hose
  • 11617547242, intake manifold gaskets (set of 6)
    The intake manifold must be removed to access the oil separator so new profile gaskets are included. We also recommend (but not required) a new oil separator fitting on the intake manifold because it's one of the heated elements that vaporizes the oil as it enters the intake.

    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.

    This kit fits the following BMWs:
    -10/2005 E90 BMW 325xi 330xi - Sedan
    -10/2005 E91 BMW 325xi - Wagon
    -10/2005 E60 BMW 525xi 530xi
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    Bosch Oxygen Sensor - E60 E61 E90 E91
    For vehicles with production date up to 10/2005 ¦ Front
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    Bosch - Corporate Logo
    T#:591939
    Part#: 11787537993
    In Stock at Vendor
    $ 177.44

    This product was last offered at the strikethrough price on
    02-23-2026

    $ 143.72 USD
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    $ 143.72 USD
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    Bad oxygen sensors can cause check engine lights and poor fuel mileage. Replace your faulty sensor with this high-quality Bosch sensor to turn off your check engine light and restore fuel mileage. 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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    Cable For Onboard Diagnosis - E82, E88, E90, E91, E92, E93
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    Genuine BMW - Corporate Logo
    T#:44883
    Part#: 16126765749
    Ships in 6 Business Days
    7% off MSRP $ 118.99

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

    $ 110.99 USD
    Free Shipping
    7% off MSRP
    $ 118.99

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

    $ 110.99 USD
    Free Shipping


    Genuine BMW Cable For Onboard Diagnosis -
    This item fits the following BMW Chassis:
    E82,E90,E92,E93

    Fits BMW Engines including:
    N52,N52N,N54,N54T,N55,S65

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    Tubing Support
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    Genuine BMW - Corporate Logo
    T#:7377
    Part#: 16131177494
    Ships in 3 Business Days
    $ 4.99 USD
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    Genuine BMW Tubing Support
    This item fits the following BMW Chassis:
    E36 M3,E46 M3,E70 X5M,E71 X6M,E82 1M Coupe,E53 48IS,E34,E36,E38,E39,E46,E53 X5 X5,E70 X5,E71 X6,E82,E90,E92,E93,F15

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    Genuine BMW Front Oxygen Sensor - bank 1 Pre-Cat
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    Genuine BMW - Corporate Logo
    T#:367762
    Part#: 11787558055
    Ships in 6 Business Days
    15% off MSRP $ 406.99

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

    $ 346.99 USD
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    15% off MSRP
    $ 406.99

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

    $ 346.99 USD
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    Genuine BMW Emissions Service Kit
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    Genuine BMW - Corporate Logo
    T#:376819
    Part#: 11617561408KT2
    Ships in 3 Business Days
    $ 225.99 USD
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    $ 225.99 USD
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    Oxygen Sensor
    For vehicles with Low Compression Engine
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    Meyle - Corporate Logo
    T#:55353609
    Part#: 11787558054
    Special Order: No Guaranteed ETA
    New Item
    $ 134.99 USD
    $ 134.99 USD
    This Meyle pre-catalytic broadband oxygen sensor is a direct replacement for your tired, slow-responding factory sensor.
    Oil Separator Vent Hose
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    Bremmen Parts - Corporate Logo
    T#:53326231
    Part#: 11617522933
    Ships on Aug 10, 2026
    New Item
    Sale - Save 20% $ 22.99

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

    $ 18.39 USD
    Sale - Save 20%
    $ 22.99

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

    $ 18.39 USD


    Febi Rear Oxygen Sensor - Bank 1 Post-Cat
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    Febi - Corporate Logo
    T#:16375111
    Part#: 11787526262
    Special Order: No Guaranteed ETA
    $ 124.99 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. Febi's Oxygen sensors are high quality and will give you the longest and best performance for the price.
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    Front Oxygen Sensor - Bank 1 Pre-Cat
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Bremmen Parts - Corporate Logo
    T#:54780515
    Part#: 11787558055
    Ships on Oct 19, 2026
    New Item
    $ 99.99 USD
    Free Shipping on orders $49 and up
    Meyle Rear Bank 1 Post-Cat Oxygen Sensor - 560mm - E70 E83 E82/88 E9X...
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    Meyle - Corporate Logo
    T#:5944215
    Part#: 11787545074
    Special Order: No Guaranteed ETA
    $ 116.99 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 Meyle oxygen sensor for BMW's with the N52, N54, and N55 3.0L engines. This 560mm bank 1 oxygen sensor is mounted after the catalytic converter. 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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    Pierburg Vacuum Pump - BMW N52 3.0L
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    Pierburg - Corporate Logo
    T#:380841
    Part#: 11667519457
    Special Order: No Guaranteed ETA
    $ 225.99 USD
    Free Shipping on orders $49 and up
    If your vacuum pump is noisy then it is only a matter of time before it fails, leading to idling issues and a loss of braking power. Replace yours with this OEM Pierburg Vacuum Pump to ensure the smooth operation of the vacuum system.
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    02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...
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    Bremmen Parts - Corporate Logo
    T#:47439371
    Part#: 02SB1815
    Ships on Feb 2, 2027
    Sale - Save 39% $ 3.99

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

    $ 2.44 USD
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    Sale - Save 39%
    $ 3.99

    This product was last offered at the strikethrough price on
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    $ 2.44 USD
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    Easily add an oxygen sensor to your custom exhaust setup with this universal O2 sensor bung. Designed for simple weld-on installation, it allows you to place your sensor exactly where you need it—perfect for custom builds, exhaust modifications, or performance tuning projects.

    Features:

    CNC-cut from T304 Stainless Steel for corrosion resistance
    Threaded for M18x1.5mm RH oxygen sensors

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    Meyle Oxygen Sensor - Pre-Cat Bank 2 - E9X E60 E82 N52
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    Meyle - Corporate Logo
    T#:5944212
    Part#: 11787558073
    Special Order: No Guaranteed ETA
    $ 123.99 USD
    Free Shipping on orders $49 and up
    Bad oxygen sensors can cause check engine lights and poor fuel mileage. Replace your faulty sensor with this high-quality Meyle sensor to turn off your check engine light and restore fuel mileage. This is a Meyle oxygen sensor for BMWs with the N52 engine. This sensor is mounted in the rear downpipe before the catalytic converter. Replacement for BMW # 11787558073 and 11787537984. 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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