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 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
Free Shipping on orders $49 and up
Sale - Save 30%
$ 112.99

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

$ 79.09 USD
Free Shipping on orders $49 and up
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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Turner Universal Baffled Oil Catch Can Mounting Bracket Kit - BMW & M...
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ECS - Corporate Logo
T#:383333
Part#: 003779ECS06KT
In Stock
Sale - Save 30% $ 95.99

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

$ 67.19 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 95.99

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

$ 67.19 USD
Free Shipping on orders $49 and up
If you don't wish to fabricate intricate brackets to mount your ECS Baffled Oil Catch Can we have the solution. ECS's three-piece bracket kit includes two options for securing the catch can. Choose from either a flat parallel mounting plate or a bent 90° mounting plate to give you 360° rotation for an infinitely adjustable mounting location.
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Oxygen Sensor - Priced Each
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URO - Corporate Logo
T#:35863157
Part#: 11781742050
In Stock
$ 49.99 USD
Free Shipping on orders $49 and up
This direct fit oxygen sensor plugs directly into your factory connector. It is the pre-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E46 E39 E38 X3 X5 Z3 Z4. Bosch # 13 477.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi 330ci
1999-2003 E39 BMW 525i 528i 530i M5
1997-2003 E39 BMW 540i
1995-2001 E38 BMW 750il
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8
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Crankcase Vent Hose
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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
Free Shipping on orders $49 and up
Sale - Save 30%
$ 31.99

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

$ 22.39 USD
Free Shipping on orders $49 and up

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
Free Shipping on orders $49 and up
Sale - Save 30%
$ 32.99

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

$ 23.09 USD
Free Shipping on orders $49 and up
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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Genuine BMW - Corporate Logo
T#:13043
Part#: 11727831039
In Stock
2% off MSRP $ 41.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 40.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 41.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 40.99 USD
Free Shipping on orders $49 and up


Genuine BMW Pressure Hose Assy
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
S54


Genuine BMW - Corporate Logo
T#:13024
Part#: 11617503666
In Stock
$ 23.99 USD
Free Shipping on orders $49 and up


Genuine BMW Hose Elbow -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M54

Leak Detection Pump - Priced Each
For vehicles with production date from 09/2001
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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
Free Shipping on orders $49 and up
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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Fuel Tank Breather Valve
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URO - Corporate Logo
T#:591935
Part#: 13901433603
Ships in 1 Business Day
$ 49.99 USD
Free Shipping on orders $49 and up
Valve between charcoal canister and throttle body

Genuine BMW - Corporate Logo
T#:13028
Part#: 11617533399
In Stock
2% off MSRP $ 42.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 41.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 42.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 41.99 USD
Free Shipping on orders $49 and up
GENUINE BMW CONNECTING LINE:111060
Genuine BMW - Corporate Logo
T#:348236
Part#: 11617504536
In Stock
2% off MSRP $ 43.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 42.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 43.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 42.99 USD
Free Shipping on orders $49 and up

Part of the vacuum and emissions system that runs from the intake manifold back to the connecting hose.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

Fits the following BMW's:
E46 M52 (from 01/2000) and M54
E39 M52 (from 01/2000) and M54
E53 M54
E60 M54
E83 M54
Z3 M52 (up to 01/2000 for 2.3L and from 01/2000 for 2.8L) and M54
Z4 M54

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Genuine BMW - Corporate Logo
T#:12911
Part#: 11157831311
Ships in 1 day
2% off MSRP $ 102.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 100.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 102.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 100.99 USD
Free Shipping on orders $49 and up
This hose directs the oil & combustion vapors from the valve cover and directs them to the intake manifold where they are put through combustion again in order to reduce emissions. We recommend replacing this hose when replacing the oil separator #11157840446.

This item fits the following BMWs:
2001-2004 E46 BMW M3
2001-2002 Z3 BMW M Roadster M Coupe
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ECS Tuning Baffled Oil Catch Can - 8oz
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ECS - Corporate Logo
T#:13496655
Part#: 003779ECS05-02
In Stock
Sale - Save 10% $ 238.99

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

$ 215.09 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 238.99

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

$ 215.09 USD
Free Shipping on orders $49 and up
Upgrade Your BMW with ECS Baffled Oil Catch Can

Modern emission regulations require a closed PCV/Breather system for cleaner operation. However, inefficient oil particle capture can lead to excessive oil vapor ingestion, causing carbon buildup, reduced performance, and fuel economy. ECS Tuning's updated ECS Baffled Oil Catch Can, now with an easy-to-empty 1/4" drain fitting, is engineered to collect toxic blow-by gases, minimize carbon deposits, and reduce oil contamination within engine oil. Recirculating oil vapor ensures emissions compliance without venting to the atmosphere.

  • Key Features:
  • Highly Efficient Oil Separator: Strategically positioned 4 chamber baffle system maximizes oil/air separation and minimizes oil droplets in the intake tract.
  • Integrated Dipstick: Knurled and black anodized oil dipstick simplifies oil volume inspection.
  • Reservoir: Available in 6oz or 8oz capacity with a 1/4" NPT drain plug fitting.
  • Serviceable: Easily removable baffle plates and drain plug for cleaning.
  • Easy/Customizable Installation: Combine with the ECS Universal Bracket Kit for simplified installation and adjustable mounting locations.
  • Leak-Free Fittings: Machined -10AN ORB (O-Ring Boss) fittings available for secure connections (fittings sold separately).
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Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617504535 - E46,...
For vehicles with production date from 01/2000
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:378292
Part#: 11617504535
In Stock
$ 22.99 USD
Free Shipping on orders $49 and up
$ 22.99 USD
Free Shipping on orders $49 and up
Runs from the top of the oil separator up to intake manifold.
Genuine BMW - Corporate Logo
T#:367705
Part#: 11611432559
Ships in 1 day
$ 47.99 USD
Free Shipping on orders $49 and up
$ 47.99 USD
Free Shipping on orders $49 and up

Secondary Air Pump To Valve Hose - E46
For vehicles with production date up to 03/2003
Genuine BMW - Corporate Logo
T#:7062
Part#: 11727555680
Ships in 1 day
3% off MSRP $ 37.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 36.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 37.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 36.99 USD
Free Shipping on orders $49 and up
The secondary air system helps to reduce emissions by pumping fresh air into the exhaust system ahead of the catalytic converter. As the air is heated it helps to combust the un-burned fuel coming from the engine as well as bring the catalytic converters up to operating temperature sooner. This hose connects the secondary air pump to the seconadary air pump with the secondary air valve.

This item fits the following BMWs:
1999-2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
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Leak Detection Pump
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URO - Corporate Logo
T#:15445597
Part#: 16136756440
In Stock
$ 153.99 USD
Free Shipping on orders $49 and up
Leak detection pump tests fuel containment system for vapor leaks to atmosphere. Failed pump often turns on check engine light.
Suction Pump
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URO - Corporate Logo
T#:377591
Part#: 11617545382
In Stock
$ 59.62

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

$ 53.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 59.62

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

$ 53.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
A common source for vacuum leaks

Genuine BMW - Corporate Logo
T#:348228
Part#: 11157532629
Ships in 1 day
$ 39.99 USD
Free Shipping on orders $49 and up
$ 39.99 USD
Free Shipping on orders $49 and up
Upper Oil Separator Vent Tube
For vehicles with production date from 01/2000
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
URO - Corporate Logo
T#:362022
Part#: 11617504535
Ships in 1 Business Day
$ 20.99 USD
Free Shipping on orders $49 and up
$ 20.99 USD
Free Shipping on orders $49 and up
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.
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Pressure Hose
For vehicles with production date from 03/2003
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
URO - Corporate Logo
T#:585279
Part#: 11727555681
Back Ordered
$ 43.99 USD
Free Shipping on orders $49 and up
$ 43.99 USD
Free Shipping on orders $49 and up
Pressure hose for the secondary air pump system. This hose runs from the secondary air pump to the solenoid.

Crankcase Pressure Regulator Valve
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URO - Corporate Logo
T#:373032
Part#: 11617501566
Ships in 1 Business Day
$ 25.99 USD
Free Shipping on orders $49 and up
$ 25.99 USD
Free Shipping on orders $49 and up
Commonly referred to as the "oil separator" or PCV
Rein Vent Hose - 11157513756 - E46 325i 325Ci
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594296
Part#: 11157513756
Ships in 3 Business Days
$ 35.75

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

$ 30.99 USD
Free Shipping on orders $49 and up
$ 30.99 USD
Free Shipping on orders $49 and up
Connects the intake manifold to the valve cover
Genuine BMW - Corporate Logo
T#:367590
Part#: 11157532649
Ships in 1 day
$ 39.99 USD
Free Shipping on orders $49 and up
$ 39.99 USD
Free Shipping on orders $49 and up


Genuine BMW - Corporate Logo
T#:37434
Part#: 11727553059
Ships in 1 day
$ 39.99 USD
Free Shipping on orders $49 and up


Genuine BMW Suction Hose -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M54,M56

Genuine BMW - Corporate Logo
T#:19233
Part#: 11617533398
Ships in 1 day
$ 47.99 USD
Free Shipping on orders $49 and up
$ 47.99 USD
Free Shipping on orders $49 and up
Genuine BMW ENGINE VENT PIPE
Genuine BMW Upper Oil Separator Vent Tube
For vehicles with production date from 01/2000
Genuine BMW - Corporate Logo
T#:7025
Part#: 11617504535
Ships in 1 day
2% off MSRP $ 42.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 41.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 42.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 41.99 USD
Free Shipping on orders $49 and up


Genuine BMW Connecting Line -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M52,M54


Genuine BMW E46 M52 Activated Charcoal Filter - 16131183893
This is only the Charcoal Filter (does not come with pump)
Genuine BMW - Corporate Logo
T#:20709
Part#: 16131183893
Ships in 1 day
3% off MSRP $ 456.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 441.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 456.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 441.99 USD
Free Shipping on orders $49 and up

Genuine BMW E46 M52 Activated Charcoal Filter is a vital component for maintaining air quality and reducing harmful emissions in BMW vehicles. Engineered to BMW's exacting standards, this charcoal filter effectively captures pollutants and odors from the vehicle's ventilation system. Upgrade your BMW E46 with this genuine BMW activated charcoal filter for cleaner air and a healthier driving environment.

  • Maintains air quality and reduces emissions
  • Engineered to BMW's exacting standards
  • Effectively captures pollutants and odors
  • Improves ventilation system efficiency
  • Genuine BMW quality


Genuine BMW Activated Charcoal Filter -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M52

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Rein - Corporate Logo
T#:552486
Part#: 11617533399
Ships in 1 day
$ 35.99 USD
Free Shipping on orders $49 and up
Runs from the top of the oil separator up to rear of the intake manifold.
Genuine BMW - Corporate Logo
T#:19447
Part#: 16131183906
Ships in 1 day
3% off MSRP $ 369.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 357.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 369.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 357.99 USD
Free Shipping on orders $49 and up


Genuine BMW Activated Charcoal Filter
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
N51,S54


Genuine BMW - Corporate Logo
T#:37437
Part#: 11727555681
Ships in 1 day
2% off MSRP $ 54.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 53.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 54.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 53.99 USD
Free Shipping on orders $49 and up


Genuine BMW Pressure Hose Assy -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M54,M56

Genuine BMW - Corporate Logo
T#:43685
Part#: 13901437611
Ships in 1 day
2% off MSRP $ 43.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 42.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 43.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 42.99 USD
Free Shipping on orders $49 and up


Genuine BMW Vent Pipe -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M52


Genuine BMW - Corporate Logo
T#:36352
Part#: 11611705171
Ships in 1 day
3% off MSRP $ 30.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 30.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.99 USD
Free Shipping on orders $49 and up


Genuine BMW Bracket Activated Carbon Container -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M52,M54

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Genuine BMW - Corporate Logo
T#:42005
Part#: 13531437282
Ships in 7 Business Days
3% off MSRP $ 39.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 38.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 39.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 38.99 USD
Free Shipping on orders $49 and up


Genuine BMW Vacuum Pipe -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M52

Vacuum Control Valve - E36 E39 E46 E53 E65 E66 E70 E83 E90
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URO - Corporate Logo
T#:24179138
Part#: 11747810831
Ships in 1 Business Day
$ 27.99 USD
Free Shipping on orders $49 and up
Vacuum control valve used in emissions control systems.
Vacuum Control Valve
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
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
Free Shipping on orders $49 and up
Sale - Save 30%
$ 27.99

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

$ 19.59 USD
Free Shipping on orders $49 and up


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
Free Shipping on orders $49 and up
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
Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.
Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...
For vehicles with production date from 01/2000
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
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
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
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 - Corporate Logo
T#:46478579
Part#: ABH0263
In Stock
$ 23.99 USD
Free Shipping on orders $49 and up
$ 23.99 USD
Free Shipping on orders $49 and up
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

OEM BMW Engine Rubber Mounting 11727559515
For vehicles with production date up to 03/2003
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
URO - Corporate Logo
T#:13041
Part#: 11727559515
In Stock
$ 4.79 USD
Free Shipping on orders $49 and up
$ 4.79 USD
Free Shipping on orders $49 and up
OEM BMW RUBBER MOUNTING:116095

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
For vehicles with production date from 01/2000
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
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
Free Shipping on orders $49 and up
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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Crankcase Ventilation Hose
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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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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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Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm) - Priced Eac...
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:637408
Part#: 028092ECS11AKT
Ships on Jan 11, 2027
Sale - Save 30% $ 3.99

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

$ 2.79 USD
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Sale - Save 30%
$ 3.99

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

$ 2.79 USD
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Upgrade your exhaust system with the Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm). This high-quality weld bung is made from stainless steel, ensuring durability and resistance to corrosion. It features M18x1.5mm threads, making it compatible with most oxygen sensors. Perfect for custom exhaust setups or replacing damaged bungs, this weld bung is a must-have for any automotive enthusiast.

  • Made from high-quality stainless steel for durability and corrosion resistance
  • M18x1.5mm threads ensure compatibility with most oxygen sensors
  • Ideal for custom exhaust setups or replacing damaged bungs
  • Essential for automotive enthusiasts looking to upgrade their exhaust system
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URO Parts Non-Return Valve - 11611312737 - E36, E46, E34, E39, E24, E...
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
URO - Corporate Logo
T#:56977985
Part#: 11611312737
In Stock
New Item
$ 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

Crankcase Ventilation Hose - E46 M3 Z3M Coupe S54
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
URO - Corporate Logo
T#:25109076
Part#: 11157831311
Ships on Dec 7, 2026
$ 17.99 USD
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This hose runs from the oil separator to the intake manifold and is designed to allow the recirculation of built-up oil vapors.

Due to its proximity to engine heat, this hose tends to get brittle and break as it ages. This can lead to oil leaks, vacuum leaks, misfires, and more.

If your crankcase ventilation hose is brittle or leaking, replace it with this unit from URO Parts.

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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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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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Crankcase Vent Hose - From Valve Cover to Oil Separator - Fit BMWs with the M52 or M54 6 cylinder engine
Rein - Corporate Logo
T#:34181269
Part#: 11157831311
Back Ordered
$ 11.99 USD
Free Shipping on orders $49 and up

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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1.5mm X 51mm Metric Buna-N 70 O-ring
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:388889
Part#: N1.50X051
In Stock
Sale - Save 35% $ 5.99

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

$ 3.89 USD
Free Shipping on orders $49 and up
Sale - Save 35%
$ 5.99

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

$ 3.89 USD
Free Shipping on orders $49 and up

1.5mm X 51mm Metric Buna-N 70 O-ring is the perfect sealing solution for various industrial applications. Made from high-quality Buna-N material, this O-ring provides reliable sealing performance, ensuring leak-free connections. With its metric sizing and 70 durometer hardness, it offers versatility and durability for a wide range of uses.

  • High-quality Buna-N material
  • Reliable sealing performance
  • Metric sizing for versatility
  • 70 durometer hardness for durability
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Crankcase Ventilation Hose
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
URO - Corporate Logo
T#:378279
Part#: 11617533398
Ships in 1 Business Day
$ 21.99 USD
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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.
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Rein - Corporate Logo
T#:384805
Part#: 11611440317
Ships in 3 Business Days
$ 20.30 USD
Free Shipping on orders $49 and up