CCV Oil Separator System for BMW 3 Series E46 (1999-2005)

BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine ...

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T#:39059262

Part#: 11157840446

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$ 40.99 USD

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BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine is a crucial component that ensures proper crankcase ventilation by regulating oil vapor flow into the intake manifold, preventing excessive oil consumption and buildup. Designed specifically for BMW E46 models with the S54 3.2L engine, this valve helps maintain engine efficiency and performance. BMW engines are known to experience oil separator freezing in cold weather if not fully warmed up, which can lead to howling noises and oil leaks. To ensure a thorough repair, replacing the valve cover gasket when changing the separator is highly recommended.

Regulates crankcase pressure to prevent excessive oil consumption
Helps maintain proper engine ventilation for peak performance
Reduces the risk of oil separator freezing and associated leaks
Direct-fit replacement for BMW E46 models with S54 3.2L engine
High-quality materials ensure durability and long-lasting performance
Recommended to replace the valve cover gasket for a complete repair

Protect your BMW's engine from excessive oil consumption and leaks by replacing a failing crankcase pressure regulator valve with this premium-quality replacement.

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Comprehensive Constant Pressure Valve Replacement Kit

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T#:557341

Part#: 11111318185TMSKT

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Sale - Save 2% $ 85.93

This product was last offered at the strikethrough price on
05-03-2026

$ 84.32 USD

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When your CPV O-ring fails it causes a slow oil leak on the passenger side of the engine, making an oily mess that frequently resembles a rear main seal leak. Replacing the CPV with an upgraded o-ring ensures a long-term solution to this common problem.

The factory o-ring over time fails from heat cycling and oil exposure due to the Buna rubber used in OEM o-rings, while the included Viton Fluoroelastomer is resistant to a much higher temperature to ensure prolonged life without leaking.

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Crankcase Breather Hose - E46 M3 05-06, Z4M - S54

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T#:12628

Part#: 11157834056

Ships in 3 Business Days

2% off MSRP $ 230.99

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

$ 225.99 USD

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2% off MSRP

$ 230.99

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

$ 225.99 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:
2005-2006 E46 BMW M3
2006-2008 E85 BMW Z4 M Roadster M Coupe

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Universal 10AN ORB To 3/8" Barb

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T#:31522993

Part#: RAD20-0530

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$ 37.99 USD

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Genuine BMW Vent Hose - E46

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T#:20657

Part#: 11617831336

Ships in 3 Business Days

2% off MSRP $ 47.99

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$ 46.99 USD

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2% off MSRP

$ 47.99

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

$ 46.99 USD

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

Fits BMW Engines including:
S54

Genuine BMW Upper Oil Separator Vent Tube

For use in cold climates

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T#:13028

Part#: 11617533399

In Stock

2% off MSRP $ 42.99

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$ 41.99 USD

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$ 42.99

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GENUINE BMW CONNECTING LINE:111060

Genuine BMW Crankcase Ventilation Hose

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T#:367705

Part#: 11611432559

Ships in 3 Business Days

$ 47.99 USD

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Genuine BMW Cold Climate Crankcase Pressure Regulator Valve

Superior performance for both warm and cold climates

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T#:12455

Part#: 11617533400

In Stock at Vendor

$ 157.99 USD

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GENUINE BMW PRESSURE REGULATING VALVE:117059

We sell this part as part of a larger kit that includes all the hoses required BMW Crankcase Vent, PCV, and Oil Separator Systems

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Genuine BMW Crankcase Ventilation Dipstick Hose

For use in cold climates

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T#:348228

Part#: 11157532629

In Stock

Sale - Save 8% $ 38.99

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$ 35.88 USD

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

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PCV Valve Seperator

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T#:15511828

Part#: 11617533400

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Sale - Save 1% $ 44.99

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05-03-2026

$ 44.51 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 to make your separator change easier.

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Crankcase Pressure Regulator Valve

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T#:22064591

Part#: AS830M

Ships on Jul 30, 2026

Sale - Save 27% $ 35.99

This product was last offered at the strikethrough price on
05-03-2026

$ 26.31 USD

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Sale - Save 27%

$ 35.99

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05-03-2026

$ 26.31 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.

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Oil Separator - E46 M3, MZ3, MZ4 with S54 engine

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T#:12913

Part#: 11157840446

In Stock

Sale - Save 8% $ 155.01

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$ 143.38 USD

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This Genuine BMW oil separator helps to remove oil from the air vented from the crankcase via a hose from the valve cover. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes and poor idle. This crankcase vent valve is also know as Oil separator valve or PCV.

This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW Z3 M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe

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Febi "Cold Climate" Crankcase Pressure Regulator Valve - E39, E46, E5...

Superior performance for both warm and cold climates

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T#:381796

Part#: 11617533400

Ships in 2 Business Days

$ 72.99

This product was last offered at the strikethrough price on
05-07-2026

$ 61.99 USD

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Commonly referred to as the "oil separator" or PCV

Genuine BMW Crankcase Ventilation Hose

For use in cold climates

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T#:19233

Part#: 11617533398

Ships in 3 Business Days

$ 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

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T#:7025

Part#: 11617504535

Ships in 4 Business 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 Crankcase Ventilation Hose

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T#:367590

Part#: 11157532649

Ships in 3 Business Days

$ 39.99 USD

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$ 39.99 USD

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Genuine BMW Emissions Service Kit - E46 M3

For vehicles with manual transmission only and production date up to 09/2004

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T#:375196

Part#: 11157840446KT3

Ships in 1 Business Day

$ 397.99

This product was last offered at the strikethrough price on
07-06-2026

$ 395.99 USD

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$ 395.99 USD

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Genuine BMW Emissions Service Kit - E46 M3

For vehicles with manual transmission only and production date up to 09/2004

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T#:375194

Part#: 11157840446KT1

Ships in 1 Business Day

$ 392.99

This product was last offered at the strikethrough price on
07-06-2026

$ 390.99 USD

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$ 390.99 USD

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Crankcase Oil Separator Valve - E46 E39 E60 X3 X5 Z3 Z4

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T#:2855

Part#: 11617501566

Ships on Oct 5, 2026

$ 48.99 USD

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$ 48.99 USD

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This Crankcase Oil Separator Valve fits BMWs with the M52tu or M54 6 cylinder engine including E46 323i 325i 328i 330i E39 525i 528i 530i E60 525i 530i X3 2.5i 3.0i X5 3.0i Z3 2.5 2.8 3.0i Z4 2.5i 3.0i. It is fairly common for this valve to become plugged with sludge which can create rough idle and excessive oil consumption.
Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
1999-2005 E46 BMW 325i 325ci 325xi - only with M54 engine
1999-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 525xi 530i 530xi
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8i Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i

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