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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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Performance Oil Separator Kit - M52/S52

T#:51356040

Part#: 059015LA02KT2KT

Ships on Nov 2, 2026

Sale - Save 19% $ 104.99

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

$ 84.77 USD

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Sale - Save 19%

$ 104.99

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

$ 84.77 USD

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On M52/S52-equipped BMWs, the factory crankcase ventilation (CCV) system is a notorious weak link. Between brittle plastic corrugated hoses that crumble from heat soak and an internal cyclone diaphragm prone to tearing, a failing CCV leads to massive oil consumption, vacuum leaks, and that dreaded "howling" whistle.

This kit addresses these issues with all new components and hardware. Both oil separator hoses, the cyclone separator itself, the mounting grommet, and the retaining bolts are included. Servicing this system is guaranteed to restore performance lost as a result of worn CCV components.

Kit includes:

Cyclone Separator/Crankcase Pressure Regulator Valve High Performance Silicone Breather Hose Return Hose Mounting Grommet Hex Bolt (3)

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URO Fuel Tank Vent Valve - 13907643106

T#:50031887

Part#: 13907643106

In Stock

$ 44.99 USD

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$ 44.99 USD

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Replaces broken or failing vent valve.

URO Crankcase Vent Valve Repair Kit - B58

T#:55713528

Part#: 11121025447

In Stock

$ 222.99

This product was last offered at the strikethrough price on
07-08-2026

$ 219.99 USD

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$ 219.99 USD

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The URO Parts Crankcase Vent Valve Repair Kit is the smart technician's fix for the notorious BMW crankcase ventilation failures.

Rear Oxygen Sensor Set - N52, N54

T#:55353594

Part#: 11787545074/5KT2

In Stock

$ 366.99 USD

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$ 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.

Bosch Oxygen Sensor Set - Pre and Post Catalytic Converter - N55 ...

T#:55857772

Part#: 11787589475KT2

In Stock

$ 335.99 USD

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$ 335.99 USD

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Extreme exhaust heat and carbon buildup degrade your factory oxygen sensors over time, sending lazy data to your DME and robbing you of performance.

Front Oxygen Sensor Set - E9x, E82, E88, Z4

T#:55317713

Part#: BFR1/2O2SKT2

In Stock

$ 400.99

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

$ 333.99 USD

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$ 333.99 USD

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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

Bosch Oxygen Sensors - Bank 1 And 2 Pre-Cat - N52

T#:56110313

Part#: 11787558055KT

In Stock

$ 307.99

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

$ 304.99 USD

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$ 304.99 USD

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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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Oil Separator kit - N63

T#:56291074

Part#: 11158636540KT2

In Stock

$ 429.67 USD

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$ 429.67 USD

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If your BMW is burning oil, showing unmetered air faults, or suffering from degraded throttle response, a compromised breather system is usually the culprit. The N63 Crankcase Breather Package pairs Genuine BMW oil separators with OE tier Rein connecting pipes. Designed to restore factory level oil separation and sealed vacuum integrity across both cylinder banks

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Oxygen Sensor - Upstream Catalytic Converter

T#:50066854

Part#: 11787596908

In Stock

$ 99.99 USD

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$ 99.99 USD

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Secondary Air Injection Pump

T#:56110341

Part#: 306-006

In Stock at Vendor

$ 427.99

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

$ 322.99 USD

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$ 322.99 USD

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Non-Return Valve

T#:56977985

Part#: 11611312737

Ships in 1 Business Day

$ 12.99 USD

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$ 12.99 USD

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Keep your BMW's vacuum and secondary air injection systems operating with complete efficiency under all driving conditions using this URO Parts non-return valve

Secondary Air Injection Pump

T#:50031894

Part#: 11721433958

Ships in 1 Business Day

$ 302.99 USD

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$ 302.99 USD

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If you’re dealing with emissions-related faults, the Secondary Air Injection (SAI) pump is an important component to check. This system is designed to inject fresh air into the exhaust manifold during cold starts, helping reduce harmful emissions while the catalytic converters warm up. When the SAI pump is damaged or not operating correctly, emissions can increase and fault codes may be triggered. In states that require emissions testing, a failed air pump can easily result in a failed inspection. Replacing a faulty Secondary Air Injection Pump helps restore proper emissions control, clear related fault codes, and ensure your vehicle remains compliant with emissions requirements.

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Crankcase Vent Hose / PCV Hose

T#:56977971

Part#: 11127588417

Ships in 1 Business Day

$ 42.99 USD

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$ 42.99 USD

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This URO Parts crankcase ventilation line offers a durable, budget-friendly replacement for failing factory tubing.

Oxygen Sensor

T#:55353609

Part#: 11787558054

Ships on Sep 9, 2026

$ 134.99 USD

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$ 134.99 USD

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This Meyle pre-catalytic broadband oxygen sensor is a direct replacement for your tired, slow-responding factory sensor.

Sensor, Exhaust Gas Temperature

T#:55461391

Part#: 3148000070

Ships on Sep 9, 2026

$ 60.99 USD

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$ 60.99 USD

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If your turbocharged Ultimate Driving Machine isn’t getting real-time, accurate temperature readouts from the exhaust stream, the ECU instantly pulls timing, limits boost, and drops your car into limp mode

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Meyle Exhaust Gas Temperature Sensor - G30 - B57

T#:55461387

Part#: 3148000073

Ships on Sep 9, 2026

$ 62.99 USD

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$ 62.99 USD

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Your ECU relies heavily on the Exhaust Gas Temperature (EGT) sensor to monitor critical exhaust heat before things get out of hand.

MEYLE NOx Sensor - Urea Injection - BMW FXX, EXX

T#:52621848

Part#: MEX1581

Ships on Sep 9, 2026

$ 291.99 USD

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$ 291.99 USD

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Maintain your BMW’s clean-diesel performance with the MEYLE MEX1581 NOx Sensor.

Exhaust Pressure Sensor

T#:55030832

Part#: 3148010004

Back Ordered

$ 57.99 USD

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$ 57.99 USD

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Keep your Ultimate Driving Machine performing at its peak with this replacement BMW exhaust pressure sensor from Meyle.

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