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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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
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Bavarian Autosport - Corporate Logo
T#:640207
Part#: 11617501566
In Stock
Sale - Save 30% $ 32.99

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

$ 23.09 USD
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$ 32.99

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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 this and all the other components of the oil separator system 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. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Rein Crankcase Ventilation Hose Kit (CCV) - 11617504535K - E46, E39, E60, E83, E53
Rein Crankcase Ventilation Hose Kit (CCV) - 11617504535K - E46, E39, ...
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Rein - Corporate Logo
T#:379190
Part#: 11617504535K
Ships in 2 Business Days
$ 79.99 USD
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$ 79.99 USD
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Turner Motorsport presents the Crankcase Ventilation System Refresh Kit for BMW owners experiencing malfunctioning or aged CCV systems. This comprehensive kit includes all necessary hoses to complete a refresh, ensuring optimal performance and reliability for your BMW's CCV system.

  • Addresses malfunctioning CCV systems
  • Ensures proper ventilation of the crankcase
  • Comprehensive kit includes all necessary hoses
  • Restores performance and reliability
  • Compatible with various BMW models
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Engine Crankcase Breather Element
Engine Crankcase Breather Element
Superior performance for both warm and cold climates
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Hengst - Corporate Logo
T#:35795496
Part#: 11617533400
In Stock
$ 41.99 USD
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$ 41.99 USD
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Commonly referred to as the "oil separator" or PCV URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.
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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MINI Models
AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MIN...
AUTOTECKNIC - Corporate Logo
T#:39971046
Part#: BM-0006-BCG
In Stock
$ 65.00 USD
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$ 65.00 USD
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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MINI Models is a premium exterior upgrade crafted from genuine carbon fiber, designed to enhance the aggressive styling and performance aesthetic of compatible BMW and MINI vehicles with an easy, OEM-fit installation.
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Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617504535 - E46, E39, E60, E83, E53
Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617504535 - E46,...
For vehicles with production date from 01/2000
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Rein - Corporate Logo
T#:378292
Part#: 11617504535
In Stock
$ 22.99 USD
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$ 22.99 USD
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Runs from the top of the oil separator up to intake manifold.
Rein Vent Hose - 11157513756 - E46 325i 325Ci
Rein Vent Hose - 11157513756 - E46 325i 325Ci
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Rein - Corporate Logo
T#:594296
Part#: 11157513756
Ships in 4 Business Days
$ 35.75

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

$ 30.99 USD
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$ 30.99 USD
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Connects the intake manifold to the valve cover
Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617533399 - E46, E39, E60, E83, E53
Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617533399 - E46,...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:552486
Part#: 11617533399
Ships in 1-2 days
$ 35.99 USD
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$ 35.99 USD
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Runs from the top of the oil separator up to rear of the intake manifold.
Oil Separator Hose - E46, Z4
Oil Separator Hose - E46, Z4
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Bavarian Autosport - Corporate Logo
T#:579880
Part#: 55080
In Stock
Sale - Save 30% $ 24.99

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

$ 17.49 USD
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$ 24.99

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Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.
Rein S54 Crankcase Vent Hose (CCV) - 11157831311 - E46 M3
Rein S54 Crankcase Vent Hose (CCV) - 11157831311 - E46 M3
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Rein - Corporate Logo
T#:34181269
Part#: 11157831311
Back Ordered
$ 11.99 USD
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$ 11.99 USD
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Crankcase Vent Hose ABV0329 is an essential component designed for BMW engines, ensuring optimal performance of the crankcase ventilation system. This high-quality vent hose plays a critical role in regulating and redirecting excess gases from the crankcase back into the engine's intake, reducing harmful emissions and preventing pressure buildup. Crankcase Vent Hose ABV0329 helps maintain engine efficiency and protects against potential damage caused by over-pressurization or oil leaks.

Made from durable, heat-resistant materials, this hose is built to withstand the high temperatures and pressures common in BMW engines. It is a direct-fit replacement, making installation simple and efficient for both professionals and DIY mechanics. Available from Turner Motorsport, Crankcase Vent Hose ABV0329 is the perfect solution for restoring and maintaining your BMW’s crankcase ventilation system.

Key Benefits:

  • Ensures proper crankcase ventilation for optimal engine performance
  • Reduces harmful emissions by redirecting excess gases into the intake
  • Prevents pressure buildup and protects against oil leaks
  • Constructed from durable, heat-resistant materials for long-lasting reliability
  • Direct-fit replacement, ensuring easy installation for various BMW models
  • Available from Turner Motorsport, a trusted source for BMW performance parts
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Rein M52 M54 Crankcase Pressure Regulator Valve (CCV) - ABH0263 - E46, E39, E60, E83, E53
Rein M52 M54 Crankcase Pressure Regulator Valve (CCV) - ABH0263 - E46...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46478579
Part#: ABH0263
In Stock
$ 23.99 USD
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$ 23.99 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 this and all the other components of the oil separator system 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.
Show More Show Less
Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
For vehicles with production date from 01/2000
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Bavarian Autosport - Corporate Logo
T#:638072
Part#: 11617504536
In Stock
Sale - Save 30% $ 26.99

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

$ 18.89 USD
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Sale - Save 30%
$ 26.99

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

$ 18.89 USD
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This is the BMW crankcase return line that goes from the intake manifold to the top CCV connecting hose. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M52TU
Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...
For vehicles with production date from 01/2000
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Bavarian Autosport - Corporate Logo
T#:640502
Part#: 11617504535
In Stock
Sale - Save 30% $ 24.99

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

$ 17.49 USD
Free Shipping on orders $49 and up
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Sale - Save 30%
$ 24.99

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

$ 17.49 USD
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Runs from the top of the oil separator up to rear of the intake manifold. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Rein Return Pipe - 11617504536 - E46, E39, E60, E83, E53
Rein Return Pipe - 11617504536 - E46, E39, E60, E83, E53
For vehicles with production date from 09/1998 For vehicles with production date from 01/2000
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:375092
Part#: 11617504536
In Stock at Vendor
$ 19.99

This product was last offered at the strikethrough price on
10-22-2026

$ 13.99 USD
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$ 13.99 USD
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Runs from the intake manifold back to connecting hose
Rein M52 Upper Oil Separator Vent Tube (CCV) - 11611440317 - E46, E39 528i
Rein M52 Upper Oil Separator Vent Tube (CCV) - 11611440317 - E46, E39...
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Rein - Corporate Logo
T#:384805
Part#: 11611440317
Ships in 4 Business Days
$ 20.30 USD
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$ 20.30 USD
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Rein M52 M54 Cold Climate Crankcase Ventilation Dipstick Hose (CCV) - 11157532629 - E46, E39, E60, E83
Rein M52 M54 Cold Climate Crankcase Ventilation Dipstick Hose (CCV) -...
For use in cold climates
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Rein - Corporate Logo
T#:2879
Part#: 11157532629
In Stock at Vendor
$ 10.99 USD
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$ 10.99 USD
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This is the updated hose that goes from the Crankcase Oil Separator Valve to the oil dipstick tube. This tube tends to get plugged with oil sludge and becomes brittle and cracks. It fits E46 323i 323ci 325i (M54) 325ci (M54) 325xi 328i 328ci 330i 330ci 330xi - E39 525i 530i - E60 525i 530i 2004-2005 - X3 2.5i 3.0i 2004-2006 - Z3 2.5i 3.0i - Z4 2.5i 3.0i 2003-2006.
In german, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2001-2005 E46 BMW 325i 325ci 325xi Only for cars with M54 engine
1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
2001-2003 E39 BMW 525i 530i
2004-2005 E60 BMW 525i 525xi 530i 530xi
2004-2006 E83 BMW X3 2.5i X3 3.0i
2001-2002 Z3 BMW Z3 2.5i Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i
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Rein Pressure Hose - 11727555680 - E46
Rein Pressure Hose - 11727555680 - E46
For vehicles with production date up to 03/2003
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Rein - Corporate Logo
T#:362278
Part#: 11727555680
In Stock
$ 26.99

This product was last offered at the strikethrough price on
08-26-2026

$ 16.59 USD
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$ 16.59 USD
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Runs from the air pump to the solenoid valve
Rein M52 M54 Crankcase Ventilation Hose (CCV) - 11157532649 - E46, E39, E60, E83
Rein M52 M54 Crankcase Ventilation Hose (CCV) - 11157532649 - E46, E3...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:359420
Part#: 11157532649
In Stock
$ 11.99 USD
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$ 11.99 USD
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ENGINE VENT HOSE 11157532649

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