Emissions System

B58 PCV Repair Kit

T#:23980285

Part#: 1112764517PCV

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07-30-2026

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

T#:2528129

Part#: 11617533400S1

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

$ 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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Fuel Tank Breather Valve

T#:25075803

Part#: 13907643106

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05-03-2026

$ 55.19 USD

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

T#:640155

Part#: 11157559528

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05-03-2026

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

$ 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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05-03-2026

$ 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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05-03-2026

$ 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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05-03-2026

$ 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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05-03-2026

$ 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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05-03-2026

$ 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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05-03-2026

$ 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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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

T#:640207

Part#: 11617501566

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05-03-2026

$ 26.39 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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Oil Separator Vent Hose

T#:33746535

Part#: 11617559530

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05-03-2026

$ 34.26 USD

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Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

T#:638072

Part#: 11617504536

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05-03-2026

$ 21.59 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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Bav Auto Vent Hose - From Valve Cover to Oil Separator - E36 E39 Z3 ...

T#:579869

Part#: 54546

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$ 21.59 USD

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Crankcase Ventilation Valve With Gasket

T#:48125820

Part#: 11127809512

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05-03-2026

$ 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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Oil Separator Valve

T#:8677203

Part#: 11617531423

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$ 67.20 USD

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Oxygen Sensor - Downstream Catalytic Converter

T#:27105147

Part#: 11787589475

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$ 101.99 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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PCV Vent Pipe

T#:26438184

Part#: 11127588417

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$ 50.58 USD

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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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Vacuum Control Valve

T#:47850818

Part#: 11747810831

Ships on Sep 28, 2026

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$ 21.21 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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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.

Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...

T#:640206

Part#: 11617501563

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$ 38.39 USD

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An integral part of the emissions system, the PCV valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle. 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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Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...

T#:639843

Part#: 11617501562

Special Order: No Guaranteed ETA

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$ 50.99 USD

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An integral part of the emissions system, the PVC valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. Often split from underhood heat and age, this vents excess oil into the engine compartment. 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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Bremmen Crankcase Oil Seperator Valve - E38 E39 M62 4.4L

T#:640156

Part#: 11151705272

Special Order: No Guaranteed ETA

Sale - Save 16% $ 34.99

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05-03-2026

$ 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

Sale - Save 20% $ 42.99

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05-03-2026

$ 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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Oil Separator Hose - E46, Z4

T#:579880

Part#: 55080

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$ 19.99 USD

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Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.

Crankcase Ventilation Hose

T#:30629689

Part#: 11157532649

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05-03-2026

$ 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

Oxygen Sensor

T#:27105146

Part#: 11787589121

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05-03-2026

$ 100.00 USD

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Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...

T#:640502

Part#: 11617504535

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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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Exhaust Backpressure Sensor - 13627805758

T#:36710102

Part#: 13627805758

In Stock

Sale - Save 23% $ 70.99

This product was last offered at the strikethrough price on
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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 - Crankcase Ventilation System

T#:8741202

Part#: 11151705272B

In Stock

Sale - Save 17% $ 22.99

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05-03-2026

$ 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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Sale - Save 61% $ 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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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

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

T#:1195924

Part#: 11157575641

Ships in 1-2 days

Sale - Save 10% $ 63.23

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$ 56.91 USD

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Replace your damaged crank vent pipe

Crankcase Ventilation Valve

T#:48125821

Part#: 11127803790

Ships on Feb 8, 2027

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$ 12.23 USD

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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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CCV Hose

T#:51391238

Part#: 11127850244

Ships on Sep 28, 2026

Sale - Save 20% $ 99.99

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

$ 79.99 USD

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Qty

Sale - Save 20%

$ 99.99

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

$ 79.99 USD

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Fuel Tank Breather Valve

T#:25075805

Part#: 13907621174

Ships on Sep 29, 2026

Sale - Save 21% $ 37.99

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

$ 30.18 USD

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Sale - Save 21%

$ 37.99

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

$ 30.18 USD

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Oil Separator Vent Hose

T#:53326231

Part#: 11617522933

In Stock

Sale - Save 20% $ 22.99

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

$ 18.39 USD

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Qty

Sale - Save 20%

$ 22.99

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

$ 18.39 USD

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Vacuum Pipe

T#:52586629

Part#: 11157603816

In Stock

Sale - Save 20% $ 29.99

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

$ 23.99 USD

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Qty

Sale - Save 20%

$ 29.99

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

$ 23.99 USD

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Oxygen Sensor Kit - F30/31 N47, E70 M57

T#:55569520

Part#: 13628589844KT2

Ships on Oct 15, 2026

Sale - Save 10% $ 770.99

This product was last offered at the strikethrough price on
07-03-2026

$ 693.88 USD

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Sale - Save 10%

$ 770.99

This product was last offered at the strikethrough price on
07-03-2026

$ 693.88 USD

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Oxygen sensors are used by the vehicle computer to adjust the air/fuel ratio and test vehicle emissions. This kit includes both rear Sensors.

Front Oxygen Sensor - Bank 2 Pre-Cat

T#:55497441

Part#: 11787558087

Ships on Nov 6, 2026

$ 109.99 USD

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$ 109.99 USD

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Exhaust Pressure Sensor

T#:56580196

Part#: 13627808013

Special Order: No Guaranteed ETA

$ 26.99 USD

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Qty

$ 26.99 USD

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This Febi Bilstein sensor provides robust thermal stability and signal consistency required for daily driving and high-load demands alike.

Fuel Tank Breather Valve (US Models)

T#:32350832

Part#: 13907614013

Special Order: No Guaranteed ETA

Sale - Save 10% $ 43.99

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

$ 39.47 USD

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Qty

Sale - Save 10%

$ 43.99

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

$ 39.47 USD

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Exhaust Gas Cooler

T#:56471635

Part#: 11718517724

Special Order: No Guaranteed ETA

$ 496.99 USD

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Qty

$ 496.99 USD

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Keep your BMW’s engine running clean and operating within strict thermal tolerances with this replacement EGR cooler from Febi Bilstein.

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