Emissions System

B58 PCV Repair Kit

T#:23980285

Part#: 1112764517PCV

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$ 53.99 USD

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Though BMW's B58 engine has proven to be mostly reliable, it does have one well-known problem, failure of the PCV Valve. This issue is especially common on cars with upgraded turbos. Signs that your BMW has experienced this failure include misfires, a rough idle, oil in the the intake/chargepipe, or white smoke coming from the exhaust. The good news is that this is easily fixed and is very affordable! This kit contains all of the items necessary to repair your PCV valve and restore the smooth operation of your B58 engine.

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Comprehensive Constant Pressure Valve Replacement Kit

T#:557341

Part#: 11111318185TMSKT

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

T#:2528129

Part#: 11617533400S1

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$ 94.99 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 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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Bremmen Crankcase Vent Hose - E60 E70 E82/88 E9X N52 3.0L

T#:640155

Part#: 11157559528

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$ 39.16 USD

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This valve cover vent hose helps to vent the crankcase fumes on BMW's with the N51 / N52 6 cylinder engines. If replacing the valve cover, we recommend purchasing this item as well as it often will break while removing it from the valve cover.

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Blow-By Vent Hose

T#:30629687

Part#: 11157553949

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$ 35.08 USD

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Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4

T#:641646

Part#: 11617501566S1

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$ 81.59 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. 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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Crankcase Vent Hose

T#:30629661

Part#: 11157831311

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$ 24.47 USD

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Bremmen Crankcase Ventilation Connecting Pipe - Cylinders 1-4 - E70/1...

T#:640154

Part#: 11157646086

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$ 41.61 USD

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Connects to the valve cover over cylinders 1-4. These pipes tend to crack after become brittle from numerous heating and cooling cycles. If this happens, Bremmen pipes are a perfect replacement to restore a tight seal and prevent any check engine codes.

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Fuel Tank Ventilation Valve Pipe

T#:8677197

Part#: 13907618643

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$ 38.24 USD

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Allows fuel fumes to vent into the engine's intake

Crankcase Ventilation Hose

T#:35357256

Part#: 11157848340

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$ 43.24 USD

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Bremmen Crankcase Ventilation Connecting Pipe - Cylinders 5-8 - E70/1...

T#:640153

Part#: 11157646087

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$ 39.98 USD

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Connects to the valve cover over cylinders 5-8. These pipes tend to crack after become brittle from numerous heating and cooling cycles. If this happens, Bremmen pipes are a perfect replacement to restore a tight seal and prevent any check engine codes.

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Performance Oil Separator Kit - M52/S52

T#:51356040

Part#: 059015LA02KT2KT

Ships on Oct 5, 2026

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$ 84.77 USD

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On M52/S52-equipped BMWs, the factory crankcase ventilation (CCV) system is a notorious weak link. Between brittle plastic corrugated hoses that crumble from heat soak and an internal cyclone diaphragm prone to tearing, a failing CCV leads to massive oil consumption, vacuum leaks, and that dreaded "howling" whistle.

This kit addresses these issues with all new components and hardware. Both oil separator hoses, the cyclone separator itself, the mounting grommet, and the retaining bolts are included. Servicing this system is guaranteed to restore performance lost as a result of worn CCV components.

Kit includes:

Cyclone Separator/Crankcase Pressure Regulator Valve High Performance Silicone Breather Hose Return Hose Mounting Grommet Hex Bolt (3)

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Oil Separator Vent Hose

T#:33746535

Part#: 11617559530

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$ 34.26 USD

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Crankcase Ventilation Valve With Gasket

T#:48125820

Part#: 11127809512

Ships on Dec 2, 2026

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$ 48.95 USD

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Restore proper engine ventilation with this premium replacement Crankcase Breather Valve (11127809512).

Designed to match the performance of the original BMW unit (OE 11-12-7-809-512 / 11-12-7-803-790), this valve maintains correct crankcase pressure, helps prevent oil buildup, and supports clean, efficient engine operation.

Crafted from high-quality, long-lasting materials and shaped to replicate the factory design, it installs easily in place of the stock breather without any modifications required.

Whether you’re addressing pressure-related drivability issues, refreshing your engine’s ventilation system, or performing preventative maintenance, this breather valve provides dependable performance and protects your BMW’s engine for the long haul.

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Oxygen Sensor - Downstream Catalytic Converter

T#:27105147

Part#: 11787589475

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$ 101.99 USD

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

T#:24344785

Part#: M54OILSEPKT

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$ 133.54 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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Oil Separator Valve

T#:8677203

Part#: 11617531423

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$ 67.20 USD

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Extraction Line

T#:30629688

Part#: 11157537701

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$ 22.84 USD

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Oxygen Sensor

T#:27105145

Part#: 11787545075

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$ 90.57 USD

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Leak Detection Pump - Priced Each

T#:35121140

Part#: 16137193479

Ships on Sep 29, 2026

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$ 54.39 USD

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Vacuum Control Valve

T#:47850818

Part#: 11747810831

Ships on Sep 28, 2026

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$ 21.21 USD

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PCV Vent Pipe

T#:26438184

Part#: 11127588417

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$ 50.58 USD

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Vent Hose for N14 N18 1.6L Engine

T#:26238478

Part#: 11157605186

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$ 27.53 USD

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Upgrade your N14 N18 1.6L Engine with the Vent Hose. This hose connects to the top valve cover with a special hose clip end and extends to the bottom side of the intake manifold, ensuring optimal performance of your Mini. It's a crucial component of the intake system, designed to enhance engine efficiency and longevity.

Ensures proper ventilation of the engine
Connects securely to the valve cover and intake manifold
Facilitates efficient airflow within the engine compartment
Compatible with N14 N18 1.6L Engine models
Easy to install and replace as needed

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Crankcase Vent Valve

T#:8741204

Part#: 11157501567

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$ 21.99 USD

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This valve is also commonly called the PCV valve, and is important to maintain a proper idle. When this valve begins to leak, you will get a large vacuum leak that can cause many problems.

Turner Oil Separator Kit - E39 M54

T#:555298

Part#: 11617501566KT6

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$ 147.02 USD

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The plastic hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the plastic components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

This kit includes the needed hoses, oil separator, mounting grommet, and hardware.

Fits the following BMWs:
2000-2003 E39 BMW 530i

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Crankcase Vent Pipe - Cylinders 5-8

T#:35357253

Part#: 11157589992

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$ 39.87 USD

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Bremmen Crankcase Oil Seperator Valve - E38 E39 M62 4.4L

T#:640156

Part#: 11151705272

Special Order: No Guaranteed ETA

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$ 29.47 USD

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BMW has an issue with oil separators freezing in cold weather if the engine is not fully warmed up during driving. Common symptoms are a howling noise followed by oil leaks. Crankcase breather valve used to purge the oil vapor from the engine block into the valve cover. This valve has 4 hoses connected to it, running to the dipstick, valve cover, and air intake.

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N20 Vacuum Hose - 11657607726

T#:36981055

Part#: 11657607726

Special Order: No Guaranteed ETA

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$ 34.26 USD

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Due to weak rubber construction and exposure to heat, this vacuum hose may be brittle and/or broken.

Replace it with this high-quality piece from Bremmen Parts to ensure proper turbocharger functionality.

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Exhaust Backpressure Sensor - 13627805758

T#:36710102

Part#: 13627805758

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$ 54.99 USD

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This exhaust backpressure sensor is a critical component of your vehicle's Diesel Particulate Filter (DPF) system, designed to monitor backpressure levels and trigger the regeneration cycle when needed. By ensuring the DPF operates efficiently, this sensor helps maintain optimal engine performance and prolongs the life of your powertrain.

A malfunctioning sensor is a common cause of check engine lights and DPF-related fault codes. If you're encountering issues with regeneration or fault codes, replacing the faulty sensor is essential to restore proper functionality. Choose this high-quality replacement from Bremmen for a reliable solution to keep your DPF system performing at its best.

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Oil Separator Kit - Level 1

T#:15710823

Part#: E46M5411_61KT

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$ 93.71 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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Oxygen Sensor

T#:27105146

Part#: 11787589121

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$ 100.00 USD

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Vaico Oil Separator Valve - E38, E39

We Price Match - Give Us A Call or Chat!

T#:363292

Part#: 11151705272

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$ 23.87 USD

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Connects to the vent tube which is attached to the PCV valve

Air Adjustment Unit/DISA Valve Kit

T#:15677538

Part#: 11617533344-KT

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$ 122.12 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

T#:30629689

Part#: 11157532649

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$ 12.23 USD

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Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

T#:640147

Part#: 11611432559

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$ 18.76 USD

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

Bremmen Parts O Ring

T#:558205

Part#: 11617533329

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$ 4.89 USD

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Seals the PCV angle connector to the intake manifold

Cold Climate Oil Separator Kit - Level 2

T#:15744065

Part#: 114317400450-KT

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

$ 137.46 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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Oil Separator - Crankcase Ventilation System

T#:8741202

Part#: 11151705272B

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$ 19.07 USD

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BMW has an issue with oil separators freezing in cold weather if the engine is not fully warmed up during driving. Common symptoms are a howling noise followed by oil leaks. Crankcase breather valve used to purge the oil vapor from the engine block into the valve cover. This valve has 4 hoses connected to it, running to dipstick, valve cover, air intake.

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Oil Separator - Crankcase Ventilation System

T#:8741203

Part#: 11151705237

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$ 6.30 USD

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$ 15.99

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$ 6.30 USD

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Critical crankcase ventilation cyclone separator - great replacement or custom install! Failure of the oil separator commonly causes problems related to smoking or a check engine light. Featuring an approximately ¾” air inlet/outlet and ½” oil drain outlet, this oil separator/CCV commonly found in custom installations on many vehicles.

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Oil Separator kit - N63

T#:56291074

Part#: 11158636540KT2

Ships in 3 Business Days

$ 429.67 USD

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$ 429.67 USD

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If your BMW is burning oil, showing unmetered air faults, or suffering from degraded throttle response, a compromised breather system is usually the culprit. The N63 Crankcase Breather Package pairs Genuine BMW oil separators with OE tier Rein connecting pipes. Designed to restore factory level oil separation and sealed vacuum integrity across both cylinder banks

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Dinan Replacement Air Pump Filter - E60 M5, E63/E64 M6

Call In Or Chat For Best Price!

T#:398512

Part#: D401-0014

Ships in 5 Business Days

11% off MSRP $ 107.99

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

$ 95.99 USD

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11% off MSRP

$ 107.99

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

$ 95.99 USD

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Replacement filter that is found on the back of the air pump housing.

Bremmen Parts Crankcase Vent Pipe - Cylinders 5-8 - E70, E71, F01, F0...

T#:1195924

Part#: 11157575641

Ships in 1 day

Sale - Save 10% $ 63.23

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

$ 56.91 USD

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Qty

Sale - Save 10%

$ 63.23

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

$ 56.91 USD

Add to Wish List

Replace your damaged crank vent pipe

Crankcase Ventilation Valve

T#:48125821

Part#: 11127803790

Ships on Feb 8, 2027

Sale - Save 24% $ 15.99

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

$ 12.23 USD

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Qty

Sale - Save 24%

$ 15.99

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

$ 12.23 USD

Add to Wish List

Ensure your BMW engine runs clean and efficiently with this Crankcase Breather Valve Diaphragm Spring and Cap (11127803790).

A direct-fit replacement for the original BMW breather (OE 11127803790 / 11-12-7-803-790), this valve maintains proper crankcase pressure, reduces oil buildup, and promotes smooth engine performance.

Constructed from durable, high-quality materials and engineered to OEM specifications, it installs easily without any modifications.

Ideal for maintenance, resolving crankcase pressure issues, or restoring your engine’s ventilation system, this breather valve delivers reliable performance and helps protect your BMW for years to come.

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