Emissions System for BMW 5 Series E39 (1996-2003)

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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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Oxygen Sensor - Priced Each
Oxygen Sensor - Priced Each
Pierburg - Corporate Logo
T#:22064620
Part#: 11781247406
Special Order: No Guaranteed ETA
$ 55.99 USD
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$ 55.99 USD
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Pierburg Secondary Air Pump Check Valve - BMW E39, Z3
Pierburg Secondary Air Pump Check Valve - BMW E39, Z3
Pierburg - Corporate Logo
T#:25109075
Part#: 11727540472
Special Order: No Guaranteed ETA
$ 76.99 USD
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$ 76.99 USD
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This air pump check valve prevents exhaust gases from entering the air injection system. If the air injection check valve develops issues, then the check engine light can illuminate. This issue will cause your vehicle to release more emissions and potentially damage the AIR system. Replace your old malfunctioning valve to get your car emissions compliant again.
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02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm)
02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:47439371
Part#: 02SB1815
Ships on Mar 25, 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
05-03-2026

$ 2.44 USD
Free Shipping on orders $49 and up
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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 - E36 Z3 M44, E31, E38, E39 M62 (97-98)
Meyle Oxygen Sensor - Pre-Cat - E36 Z3 M44, E31, E38, E39 M62 (97-98)...
For vehicles with production date up to 09/1998
5X Entries Into Our F80 M3 Sweepstakes
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Meyle - Corporate Logo
T#:5944214
Part#: 11781247406
Back Ordered
$ 57.99 USD
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$ 57.99 USD
Free Shipping on orders $49 and up
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This direct-fit Meyle oxygen sensor plugs directly into your factory connector. Fits M44 engine Z3 and 3 series and M62 engine E39, E38, E31 with V8 engines. No cutting or splicing is required. A new oxygen sensor can improve driveability and lengthen engine life. This is the pre-catalytic converter oxygen sensor
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Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38
Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38
Up to Model Year 09/1998
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:640144
Part#: 13411733217
Back Ordered
Sale - Save 17% $ 9.99

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

$ 8.25 USD
Free Shipping on orders $49 and up
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Sale - Save 17%
$ 9.99

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

$ 8.25 USD
Free Shipping on orders $49 and up
Add to Wish List
This grommet is located on the back side of the PCV or idle control valve
"Cold Climate" Crankcase Pressure Regulator Valve
"Cold Climate" Crankcase Pressure Regulator Valve
5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:35829339
Part#: 11617533400
Back Ordered
$ 69.99 USD
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$ 69.99 USD
Free Shipping on orders $49 and up
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BMW vehicles are prone to oil separators freezing in cold weather if driven before the engine is fully warmed up. This can lead to a howling noise followed by multiple oil leaks. The crankcase breather valve vents oil vapor from the engine block to the valve cover, but condensation can sometimes cause it to freeze, leading to a failure of the entire oil separator system, causing it to crack and break down. To prevent damage to your engine, it’s best to replace all components of the oil separator system at once. Replacing everything ensures reliable performance and durability. Remember to also order a valve cover gasket to make the replacement process easier.
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