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

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$ 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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Oxygen Sensor - Priced Each

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T#:35863157

Part#: 11781742050

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$ 49.99 USD

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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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Schwaben 7/8"(22mm) Flexible Oxygen Sensor Wrench

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T#:368923

Part#: FO-78

Ships on Dec 1, 2026

Sale - Save 30% $ 49.99

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

$ 34.99 USD

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The Schwaben oxygen sensor wrench has a six-point pivot head to provide a secure grip on stubbornly tight oxygen sensors located in awkward, inaccessible locations.

Crankcase Vent Hose

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T#:30629661

Part#: 11157831311

In Stock

Sale - Save 30% $ 31.99

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11-07-2026

$ 22.39 USD

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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

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T#:640207

Part#: 11617501566

In Stock

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$ 23.09 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 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 Pressure hose assembly - E46 M3

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

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$ 41.99

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

Fits BMW Engines including:
S54

Genuine BMW Vacuum hose

T#:13024

Part#: 11617503666

In Stock

$ 23.99 USD

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$ 23.99 USD

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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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T#:35121140

Part#: 16137193479

In Stock

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$ 50.24 USD

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Fuel Tank Breather Valve

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T#:591935

Part#: 13901433603

Ships in 2 Business Days

$ 49.99 USD

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Valve between charcoal canister and throttle body

Engine Oil Separator Package - Level 2 - E46 325, E39 525i M54 ...

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T#:24344785

Part#: M54OILSEPKT

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$ 115.41 USD

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If you need to perform a complete oil separator system service, this Level 2 kit provides you with all of the main components necessary to service your engine oil separator system. This Level 2 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 Throttle body gasket Throttle body inlet boot ICV rubber grommet Oil dipstick tube o-ring seal It is highly recommended to replace the oil dipstick tube with the updated design by BMW as this also a common place for sludge to build up.

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Genuine BMW Upper Oil Separator Vent Tube

For use in cold climates

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

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GENUINE BMW CONNECTING LINE:111060

Genuine BMW Return Pipe - 11617504536 - E46 E39 E53 E60 E83 Z3 Z4 M52...

For vehicles with production date from 01/2000

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

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$ 43.99

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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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Engine Crankcase Breather Element

Superior performance for both warm and cold climates

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T#:35795496

Part#: 11617533400

In Stock

$ 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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Crankcase Breather Hose - E46 M3 01-04 Z3M - S54

T#:12911

Part#: 11157831311

Ships in 1-2 days

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

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$ 102.99

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$ 100.99 USD

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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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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MIN...

T#:39971046

Part#: BM-0006-BCG

In Stock

$ 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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Genuine BMW Crankcase Ventilation Hose

T#:367705

Part#: 11611432559

Ships in 1-2 days

$ 47.99 USD

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Secondary Air Pump To Valve Hose - E46

For vehicles with production date up to 03/2003

T#:7062

Part#: 11727555680

Ships in 1-2 days

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

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$ 37.99

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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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T#:15445597

Part#: 16136756440

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$ 153.99 USD

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Leak detection pump tests fuel containment system for vapor leaks to atmosphere. Failed pump often turns on check engine light.

Electric Valve - For Secondary Air System Or Exhaust Flap

T#:362205

Part#: 11747810831

In Stock

$ 74.99

This product was last offered at the strikethrough price on
07-09-2026

$ 42.19 USD

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This electric valve serves one of several purposes depending on which car it is used on. Please read the application listings below to ensure you are purchasing the correct part.

Pierburg pumps are some of the most trusted and widely used on the market. From fuel, water, air and vacuum Pierburg has you covered with OE quality and reliable performance year after year.

This item fits the following BMWs:
Secondary Air System Valve
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2003-2005 E46 BMW 325i 325ci (M56)
1997-2003 E39 BMW 525i 528i 530i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1997-2000 Z3 BMW M Roadster M Coupe (S52)

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Suction Pump

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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

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$ 59.62

This product was last offered at the strikethrough price on
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A common source for vacuum leaks

Genuine BMW Crankcase Ventilation Dipstick Hose

For use in cold climates

T#:348228

Part#: 11157532629

Ships in 1-2 days

$ 39.99 USD

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$ 39.99 USD

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Upper Oil Separator Vent Tube

For vehicles with production date from 01/2000

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T#:362022

Part#: 11617504535

Ships in 2 Business Days

$ 20.99 USD

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$ 20.99 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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Pressure Hose

For vehicles with production date from 03/2003

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T#:585279

Part#: 11727555681

Back Ordered

$ 43.99 USD

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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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T#:373032

Part#: 11617501566

Ships in 2 Business Days

$ 25.99 USD

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$ 25.99 USD

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Commonly referred to as the "oil separator" or PCV

Genuine BMW Crankcase Ventilation Hose

T#:367590

Part#: 11157532649

Ships in 1-2 days

$ 39.99 USD

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$ 39.99 USD

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Genuine BMW Suction Hose - E46 M54 2.5L E46 M54 3.0L

T#:37434

Part#: 11727553059

Ships in 1-2 days

$ 39.99 USD

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$ 39.99 USD

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

Fits BMW Engines including:
M54,M56

Genuine BMW Crankcase Ventilation Hose

For use in cold climates

T#:19233

Part#: 11617533398

Ships in 1-2 days

$ 47.99 USD

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$ 47.99 USD

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Genuine BMW ENGINE VENT PIPE

Genuine BMW Upper Oil Separator Vent Tube

For vehicles with production date from 01/2000

T#:7025

Part#: 11617504535

Ships in 1-2 days

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

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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

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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)

T#:20709

Part#: 16131183893

Ships in 1-2 days

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

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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

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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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Genuine BMW Activated Charcoal Filter - 16131183906 - E46,E46 M3 ...

T#:19447

Part#: 16131183906

Ships in 1-2 days

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

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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

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

Fits BMW Engines including:
N51,S54

Genuine BMW Pressure Hose - E46 325i 325Ci 325xi 330xi 330i 330Ci ...

For vehicles with production date from 03/2003

T#:37437

Part#: 11727555681

Ships in 1-2 days

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

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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

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

Fits BMW Engines including:
M54,M56

Genuine BMW Fuel Breather Line - E46 323Ci 323i 328Ci 328i

T#:43685

Part#: 13901437611

Ships in 1-2 days

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

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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

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

Fits BMW Engines including:
M52

Genuine BMW Bracket Activated Carbon Con - 11611705171

T#:36352

Part#: 11611705171

Ships in 3 Business Days

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

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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

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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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Vacuum Pipe - E46, Z3

T#:42005

Part#: 13531437282

Ships in 9 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

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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

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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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T#:24179138

Part#: 11747810831

Ships in 2 Business Days

$ 27.99 USD

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Vacuum control valve used in emissions control systems.

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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$ 27.99

This product was last offered at the strikethrough price on
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Oil Separator Hose - E46, Z4

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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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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

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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

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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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Oil Separator Kit - Level 1

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T#:15710823

Part#: E46M5411_61KT

In Stock

Sale - Save 40% $ 124.99

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

$ 74.97 USD

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Sale - Save 40%

$ 124.99

This product was last offered at the strikethrough price on
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$ 74.97 USD

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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. 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. ur 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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Cold Climate Oil Separator Kit - Level 2

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T#:15744065

Part#: 114317400450-KT

In Stock

Sale - Save 44% $ 231.99

This product was last offered at the strikethrough price on
06-15-2026

$ 128.81 USD

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Qty

Sale - Save 44%

$ 231.99

This product was last offered at the strikethrough price on
06-15-2026

$ 128.81 USD

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If you are ready to perform a truly complete oil separator system service, our Level 2 kit provides you with all of our Level 1 kit components plus a throttle body gasket, throttle body inlet boot, ICV grommet, and dipstick tube o-ring. Our Level 2 Cold Climate kit includes the following: Oil separator - BMW cold climate recommended Hose from oil separator to dipstick tube - BMW cold climate recommended 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 Throttle body gasket Throttle body inlet boot ICV rubber grommet Oil dipstick tube o-ring seal It is highly recommended to replace the oil dipstick tube with the updated design by BMW as this also a common place for sludge to build up.

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OEM BMW Engine Rubber Mounting 11727559515

For vehicles with production date up to 03/2003

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T#:13041

Part#: 11727559515

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$ 4.79 USD

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$ 4.79 USD

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OEM BMW RUBBER MOUNTING:116095

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

For vehicles with production date from 01/2000

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

$ 11.19 USD

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URO Parts Non-Return Valve - 11611312737 - E36, E46, E34, E39, E24, E...

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T#:56977985

Part#: 11611312737

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$ 12.99 USD

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$ 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

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T#:25109076

Part#: 11157831311

Ships on Dec 7, 2026

$ 17.99 USD

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$ 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

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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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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

Air Adjustment Unit/DISA Valve Kit

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T#:15677538

Part#: 11617533344-KT

In Stock

Sale - Save 40% $ 162.99

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

$ 97.70 USD

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Sale - Save 40%

$ 162.99

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

$ 97.70 USD

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A bad DISA valve can cause a variety of issues, from a loud racket in the engine bay, hesitation at low rpm and a rough idle with lean codes. If the valve is making a loud noise, we recommend replacing it as soon as possible. It is possible for the pin holding the flap to be sucked into the motor causing serious damage. Very easy to replace, just need to undo the 4 bolts holding it to the intake manifold. Includes new mounting hardware

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Crankcase Ventilation Hose

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T#:378279

Part#: 11617533398

Ships in 2 Business Days

$ 21.99 USD

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$ 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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