Emissions System for BMW 3 Series E46 (1999-2005)

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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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Bremmen "Cold Climate" Crankcase Pressure Regulator Valve Kit - BMW M54 2.5L 3.0L
Bremmen "Cold Climate" Crankcase Pressure Regulator Valve Kit - BMW M...
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Bremmen Parts - Corporate Logo
T#:2528129
Part#: 11617533400S1
In Stock
Sale - Save 30% $ 112.99

This product was last offered at the strikethrough price on
11-07-2026

$ 79.09 USD
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$ 112.99

This product was last offered at the strikethrough price on
11-07-2026

$ 79.09 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 all the components of the oil separator system together 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. Don't forget to order a valve cover gasket, throttle body gasket, and a new intake boot to make your separator change easier and more comprehensive.
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Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4
Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:641646
Part#: 11617501566S1
In Stock
Sale - Save 30% $ 97.99

This product was last offered at the strikethrough price on
11-07-2026

$ 68.59 USD
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Sale - Save 30%
$ 97.99

This product was last offered at the strikethrough price on
11-07-2026

$ 68.59 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 all the components of the oil separator system together to prevent damage to all the aspects of your engine. Level 1 kit includes the following; Oil separator Hose from oil separator to dipstick tube Hose from oil separator to valve cover Hose from intake manifold back to the connector hose Hose from oil separator up to the intake manifold
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Leak Detection Pump - Priced Each
Leak Detection Pump - Priced Each
For vehicles with production date from 09/2001
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:35121140
Part#: 16137193479
In Stock
Sale - Save 25% $ 66.99

This product was last offered at the strikethrough price on
11-07-2026

$ 50.24 USD
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Sale - Save 25%
$ 66.99

This product was last offered at the strikethrough price on
11-07-2026

$ 50.24 USD
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Crankcase Vent Hose
Crankcase Vent Hose
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:30629661
Part#: 11157831311
In Stock
Sale - Save 30% $ 31.99

This product was last offered at the strikethrough price on
11-07-2026

$ 22.39 USD
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$ 31.99

This product was last offered at the strikethrough price on
11-07-2026

$ 22.39 USD
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Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46
Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:640147
Part#: 11611432559
In Stock
Sale - Save 30% $ 23.99

This product was last offered at the strikethrough price on
11-07-2026

$ 16.79 USD
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$ 23.99

This product was last offered at the strikethrough price on
11-07-2026

$ 16.79 USD
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Crankcase Vent Hose - From Valve Cover to Oil Separator - Fit BMWs with the M52 or M54 6 cylinder engine
Vacuum Control Valve
Vacuum Control Valve
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Bremmen Parts - Corporate Logo
T#:47850818
Part#: 11747810831
In Stock
Sale - Save 30% $ 27.99

This product was last offered at the strikethrough price on
11-07-2026

$ 19.59 USD
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$ 27.99

This product was last offered at the strikethrough price on
11-07-2026

$ 19.59 USD
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Crankcase Ventilation Hose
Crankcase Ventilation Hose
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:30629689
Part#: 11157532649
In Stock
Sale - Save 30% $ 15.99

This product was last offered at the strikethrough price on
11-07-2026

$ 11.19 USD
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$ 15.99

This product was last offered at the strikethrough price on
11-07-2026

$ 11.19 USD
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Oxygen Sensor - Front Or Rear Manifold
Oxygen Sensor - Front Or Rear Manifold
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Bremmen Parts - Corporate Logo
T#:56797107
Part#: 11787523434
Ships on Dec 15, 2026
New Item
Sale - Save 30% $ 119.99

This product was last offered at the strikethrough price on
11-07-2026

$ 83.99 USD
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$ 119.99

This product was last offered at the strikethrough price on
11-07-2026

$ 83.99 USD
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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 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:47439371
Part#: 02SB1815
Ships on Jun 10, 2027
Sale - Save 46% $ 3.99

This product was last offered at the strikethrough price on
11-07-2026

$ 2.14 USD
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$ 3.99

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$ 2.14 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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