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

Bremmen "Cold Climate" Crankcase Pressure Regulator Valve Kit - BMW M...

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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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This product was last offered at the strikethrough price on
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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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Leak Detection Pump - Priced Each

For vehicles with production date from 09/2001

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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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This product was last offered at the strikethrough price on
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Crankcase Vent Hose

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T#:30629661

Part#: 11157831311

In Stock

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

$ 22.39 USD

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Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617504535 - E46,...

For vehicles with production date from 01/2000

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T#:378292

Part#: 11617504535

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$ 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

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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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Connects the intake manifold to the valve cover

Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617533399 - E46,...

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T#:552486

Part#: 11617533399

Ships in 1-2 days

$ 35.99 USD

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Runs from the top of the oil separator up to rear of the intake manifold.

Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

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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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Crankcase Vent Hose - From Valve Cover to Oil Separator - Fit BMWs with the M52 or M54 6 cylinder engine

Vacuum Control Valve

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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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Rein S54 Crankcase Vent Hose (CCV) - 11157831311 - E46 M3

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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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Crankcase Ventilation Hose

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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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Rein M52 M54 Crankcase Pressure Regulator Valve (CCV) - ABH0263 - E46...

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T#:46478579

Part#: ABH0263

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$ 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.

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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

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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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Runs from the intake manifold back to connecting hose

Rein M52 Upper Oil Separator Vent Tube (CCV) - 11611440317 - E46, E39...

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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) -...

For use in cold climates

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T#:2879

Part#: 11157532629

In Stock at Vendor

$ 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

For vehicles with production date up to 03/2003

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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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Runs from the air pump to the solenoid valve

Rein M52 M54 Crankcase Ventilation Hose (CCV) - 11157532649 - E46, E3...

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T#:359420

Part#: 11157532649

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$ 11.99 USD

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ENGINE VENT HOSE 11157532649

Oxygen Sensor - Front Or Rear Manifold

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T#:56797107

Part#: 11787523434

Ships on Dec 15, 2026

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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02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...

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T#:47439371

Part#: 02SB1815

Ships on Jun 11, 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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Emissions System for BMW 3 Series E46 (1999-2005)

Sub-Categories

Bremmen "Cold Climate" Crankcase Pressure Regulator Valve Kit - BMW M...

Leak Detection Pump - Priced Each

Crankcase Vent Hose

Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617504535 - E46,...

Rein Vent Hose - 11157513756 - E46 325i 325Ci

Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617533399 - E46,...

Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

Vacuum Control Valve

Rein S54 Crankcase Vent Hose (CCV) - 11157831311 - E46 M3

Key Benefits:

Crankcase Ventilation Hose

Rein M52 M54 Crankcase Pressure Regulator Valve (CCV) - ABH0263 - E46...

Rein Return Pipe - 11617504536 - E46, E39, E60, E83, E53

Rein M52 Upper Oil Separator Vent Tube (CCV) - 11611440317 - E46, E39...

Rein M52 M54 Cold Climate Crankcase Ventilation Dipstick Hose (CCV) -...

Rein Pressure Hose - 11727555680 - E46

Rein M52 M54 Crankcase Ventilation Hose (CCV) - 11157532649 - E46, E3...

Oxygen Sensor - Front Or Rear Manifold

02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...

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