CCV Oil Separator System for BMW E46 M3 S54 (1999-2005)

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BMWs oil separator and crankcase ventilation system is excellent at what it does when properly maintained. Always inspect any visible hoses when you are under the hood and follow the manufacturers replacement schedule.
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Comprehensive Constant Pressure Valve Replacement Kit
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Packaged by Turner - Corporate Logo
T#:557341
Part#: 11111318185TMSKT
In Stock
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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Sale - Save 2%
$ 85.93

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

$ 84.32 USD
Free Shipping

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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BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine ...
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:39059262
Part#: 11157840446
In Stock
$ 40.99 USD
Free Shipping on orders $49 and up

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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Crankcase Breather Hose - E46 M3 05-06, Z4M - S54
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Genuine BMW - Corporate Logo
T#:12628
Part#: 11157834056
Ships in 1-2 days
3% 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.

$ 223.99 USD
Free Shipping
3% 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.

$ 223.99 USD
Free Shipping
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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Radium Engineering - Corporate Logo
T#:31522993
Part#: RAD20-0530
In Stock
$ 37.99 USD
Free Shipping on orders $49 and up

Genuine BMW Vent Hose - E46
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:20657
Part#: 11617831336
Ships in 1-2 days
4% 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.

$ 45.99 USD
Free Shipping on orders $49 and up
4% 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.

$ 45.99 USD
Free Shipping on orders $49 and up


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

Fits BMW Engines including:
S54

Oil Separator - E46 M3, MZ3, MZ4 with S54 engine
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Genuine BMW - Corporate Logo
T#:12913
Part#: 11157840446
In Stock
Sale - Save 5% $ 155.01

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

$ 147.26 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 155.01

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

$ 147.26 USD
Free Shipping on orders $49 and up
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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Genuine BMW Emissions Service Kit - E46 M3
For vehicles with manual transmission only and production date up to 09/2004
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Genuine BMW - Corporate Logo
T#:375194
Part#: 11157840446KT1
Ships in 1-2 days
$ 388.99 USD
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$ 388.99 USD
Free Shipping
Genuine BMW Emissions Service Kit - E46 M3
For vehicles with manual transmission only and production date up to 09/2004
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:375196
Part#: 11157840446KT3
Ships in 1-2 days
$ 393.99 USD
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$ 393.99 USD
Free Shipping

Genuine BMW Vent Hose - E46 M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:36666
Part#: 11617839061
Back Ordered
3% 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.

$ 223.99 USD
Free Shipping on orders $49 and up
3% 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.

$ 223.99 USD
Free Shipping on orders $49 and up


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

Fits BMW Engines including:
S54


Genuine BMW Emissions Service Kit - E46 M3
For vehicles with SMG gearbox and production date up to 09/2004
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:577309
Part#: 11157840446KT5
Back Ordered
$ 609.99 USD
Free Shipping
$ 609.99 USD
Free Shipping