Find Parts That Fit Your Vehicle

Home
Engine Parts
Emissions System

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.

Sub-Categories

Sort By:

Performance Oil Separator Kit - M52/S52

T#:51356040

Part#: 059015LA02KT2KT

Ships on Oct 5, 2026

Sale - Save 19% $ 104.99

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

$ 84.77 USD

Add to Wish List

Qty

Sale - Save 19%

$ 104.99

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

$ 84.77 USD

Add to Wish List

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)

Show More Show Less

BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit - G2X/G42/A...

T#:49822554

Part#: BMSB58OCCFCDV

Ships on Aug 28, 2026

$ 139.00 USD

Add to Wish List

Qty

$ 139.00 USD

Add to Wish List

Keep crankcase vapors in check and your intake air clean with the BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit for the Gen2 B58. This upgrade ditches the flimsy factory venting in favor of a precision CNC-machined billet oil filler cap and dual-vent fittings engineered to handle increased crankcase pressure under boost. By diverting oil-laden vapors into a catch can instead of back through the intake, this system helps minimize carbon buildup, reduces oily contamination, and promotes more consistent performance as power levels climb. High-quality hoses and fittings ensure a secure, leak-free install that won’t collapse under pressure and maintains a clean, OE-plus appearance in the engine bay. An easy, effective upgrade for B58 enthusiasts looking for cleaner operation, improved engine longevity, and proven performance-focused design

Show More Show Less

Oil Separator kit - N63

T#:56291074

Part#: 11158636540KT2

In Stock

$ 429.67 USD

Add to Wish List

Qty

$ 429.67 USD

Add to Wish List

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

Show More Show Less

Rear Oxygen Sensor Set - N52, N54

T#:55353594

Part#: 11787545074/5KT2

In Stock

$ 366.99 USD

Add to Wish List

Qty

$ 366.99 USD

Add to Wish List

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

Add to Wish List

Qty

$ 335.99 USD

Add to Wish List

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

$ 337.99 USD

Add to Wish List

Qty

$ 337.99 USD

Add to Wish List

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 USD

Add to Wish List

Qty

$ 307.99 USD

Add to Wish List

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.

Show More Show Less

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

Add to Wish List

Qty

$ 322.99 USD

Add to Wish List

Exhaust Pressure Sensor

T#:56580196

Part#: 13627808013

Special Order: No Guaranteed ETA

$ 26.99 USD

Add to Wish List

Qty

$ 26.99 USD

Add to Wish List

This Febi Bilstein sensor provides robust thermal stability and signal consistency required for daily driving and high-load demands alike.

Upstream NOx Sensor

T#:56254774

Part#: 13628589846

Special Order: No Guaranteed ETA

$ 312.99 USD

Add to Wish List

Qty

$ 312.99 USD

Add to Wish List

Maintain peak performance and emissions compliance on your BMW with this replacement upstream NOx sensor by Febi Bilstein.

Oxygen Sensor

T#:56254844

Part#: 11787512973

Special Order: No Guaranteed ETA

$ 62.99 USD

Add to Wish List

Qty

$ 62.99 USD

Add to Wish List

Maintain peak engine performance and precise air/fuel ratio telemetry with the Febi Bilstein Heated Oxygen Sensor.

Exhaust Gas Cooler

T#:56471635

Part#: 11718517724

Special Order: No Guaranteed ETA

$ 496.99 USD

Add to Wish List

Qty

$ 496.99 USD

Add to Wish List

Keep your BMW’s engine running clean and operating within strict thermal tolerances with this replacement EGR cooler from Febi Bilstein.

Oxygen Sensor

T#:56254780

Part#: 11787836451

Special Order: No Guaranteed ETA

$ 63.99 USD

Add to Wish List

Qty

$ 63.99 USD

Add to Wish List

This Febi Bilstein oxygen sensor is designed as a direct OEM-spec replacement to keep your engine management system operating with pin-point accuracy.

Oxygen Sensor

T#:56254778

Part#: 11781743994

Special Order: No Guaranteed ETA

$ 62.99 USD

Add to Wish List

Qty

$ 62.99 USD

Add to Wish List

This Febi Bilstein Oxygen Sensor provides a high-quality OEM replacement option built to precise vehicle specifications.

NOx Sensor - SCR-Type Catalytic Converter

T#:56616356

Part#: 13627812528

Special Order: No Guaranteed ETA

$ 268.99 USD

Add to Wish List

Qty

$ 268.99 USD

Add to Wish List

Keep your BMW’s emissions control working with the precise calibration it demands with this Febi Bilstein NOx Sensor.

Fuel Tank Vent Valve

T#:56543996

Part#: 13907621174

Special Order: No Guaranteed ETA

$ 43.99 USD

Add to Wish List

Qty

$ 43.99 USD

Add to Wish List

Keep your BMW or MINI running at peak efficiency with this Febi Bilstein Fuel Tank Vent Valve.

Select Vehicle

Purpose

Category

Emissions System

Brand

Price

Special Offers

Shipping

Free Shipping on orders $49+ (16)