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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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OEM Bosch Universal 4-Wire Oxygen Sensor - Priced Each
Bosch - Corporate Logo
T#:372884
Part#: 15733
In Stock
$56.95
Free Shipping on orders $49 and up
$56.95
Free Shipping on orders $49 and up
Bosch Universal Oxygen Sensors are perfect for replacing faulty sensors throwing off a check engine lights and causing poor operation and low gas mileage. If you are looking for a cheaper option or are unable to get a hold of the sensor you need, you can reuse part of the original wiring harness to connect this high quality replacement.
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OEM Bosch Oxygen Sensor - mounts before catalytic converter - E46 E39 E38 X3 X5 Z3 Z4
Bosch - Corporate Logo
T#:2998
Part#: 11781742050
In Stock
$67.95
Free Shipping on orders $49 and up
This direct fit Bosch oxygen sensor plugs directly into your factory connector. It is the pre-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E46 E39 E38 X3 X5 Z3 Z4. Bosch # 13 477.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi 330ci
1999-2003 E39 BMW 525i 528i 530i M5
1997-2003 E39 BMW 540i
1995-2001 E38 BMW 750il
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8
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E82 135i N54, E9X 335 N54, E60 535 Vargas Upgraded PCV Valve
Vargas Turbo Technologies - Corporate Logo
T#:389684
Part#: VTT-N54-PCV
In Stock
17% off MSRP $60.00
$49.99
Free Shipping on orders $49 and up
17% off MSRP $60.00
$49.99
Free Shipping on orders $49 and up
The crankcase oil vent system on the N52/N54 is one of its weakest and cheaply designed systems. We see crankcase vent issues on even stock engines but with more boost the problems are exponential. This Vargas upgraded PCV valve, and an oil catch can, are what the N54 engine needs and may alleviate most of your oil and boost leak issues. The PCV valve is supposed to let oil either return to the oil pan or pass through the intake manifold and get burned up in the combustion chamber. However, BMW used a weak plastic vent valve that doesn't seal well when under boost. Instead of  closing and venting the oil out of the intake, it's forced through this valve and into the intake and coating your valves with oil residue and carbon. Most boost equals more oil forcing its way by. This upgraded N54 PCV valve uses higher grade materials, including aluminum, to provide a better seal and prevent oil from entering the intake. It's an easy install and a must-have item when considering any turbo work.
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Genuine BMW EGR/Secondary Air Pump Block Off Plate - Multiple BMWs
Genuine BMW - Corporate Logo
T#:12540
Part#: 11121438086
In Stock
11% off MSRP $25.04
$22.19
Free Shipping on orders $49 and up
11% off MSRP $25.04
$22.19
Free Shipping on orders $49 and up
The Secondary Air Pump in a vehicle injects air into the manifold to recreate a lean condition which causes the catalytic converters to raise in temperature until they are at optimum efficiency. Some vehicles do not come equipped with EGR/SAI systems from the factory and instead use this plate. If the plate is corroded or missing, replacement may be necessary. Use with a new gasket to ensure a proper seal.
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OEM Bosch Oxygen "O2" Sensor - Post Cat - N63 S63
Bosch - Corporate Logo
T#:585261
Part#: 11787614322
In Stock
$52.95
Free Shipping on orders $49 and up
This direct-fit Bosch oxygen sensor plugs directly into your factory connector. This is the post-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life.
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