Emissions System for BMW Z Series E36/7 (1996-2002)

Comprehensive Constant Pressure Valve Replacement Kit

10X Entries Into Our F80 M3 Sweepstakes

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

Add to Wish List

Qty

Sale - Save 2%

$ 85.93

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

$ 84.32 USD

Add to Wish List

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.

Show More Show Less

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

For vehicles with production date from 01/2000

10X Entries Into Our F80 M3 Sweepstakes

T#:641646

Part#: 11617501566S1

In Stock

Sale - Save 15% $ 95.99

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

$ 81.59 USD

Add to Wish List

Qty

Sale - Save 15%

$ 95.99

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

$ 81.59 USD

Add to Wish List

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

Show More Show Less

Performance Oil Separator Kit - M52/S52

For vehicles with production date up to 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:51356040

Part#: 059015LA02KT2KT

In Stock

Sale - Save 20% $ 104.99

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

$ 84.24 USD

Add to Wish List

Qty

Sale - Save 20%

$ 104.99

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

$ 84.24 USD

Add to Wish List

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)

Show More Show Less

Crankcase Vent Hose

10X Entries Into Our F80 M3 Sweepstakes

T#:30629661

Part#: 11157831311

In Stock

Sale - Save 21% $ 30.99

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

$ 24.47 USD

Add to Wish List

Qty

Sale - Save 21%

$ 30.99

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

$ 24.47 USD

Add to Wish List

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

For vehicles with production date from 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:640207

Part#: 11617501566

In Stock

Sale - Save 20% $ 32.99

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

$ 26.39 USD

Add to Wish List

Qty

Sale - Save 20%

$ 32.99

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

$ 26.39 USD

Add to Wish List

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.

Show More Show Less

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

For vehicles with production date from 01/2000 For vehicles with production date up to 01/2000

10X Entries Into Our F80 M3 Sweepstakes

T#:638072

Part#: 11617504536

In Stock

Sale - Save 20% $ 26.99

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

$ 21.59 USD

Add to Wish List

Qty

Sale - Save 20%

$ 26.99

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

$ 21.59 USD

Add to Wish List

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.

Show More Show Less

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

For Model year 1998-2001 only

10X Entries Into Our F80 M3 Sweepstakes

T#:579869

Part#: 54546

In Stock

Sale - Save 20% $ 26.99

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

$ 21.59 USD

Add to Wish List

Qty

Sale - Save 20%

$ 26.99

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

$ 21.59 USD

Add to Wish List

Leak Detection Pump - Priced Each

For vehicles with production date from 10/2001

10X Entries Into Our F80 M3 Sweepstakes

T#:35121140

Part#: 16137193479

In Stock

Sale - Save 18% $ 65.99

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

$ 54.39 USD

Add to Wish List

Qty

Sale - Save 18%

$ 65.99

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

$ 54.39 USD

Add to Wish List

Vacuum Control Valve

10X Entries Into Our F80 M3 Sweepstakes

T#:47850818

Part#: 11747810831

In Stock

Sale - Save 21% $ 26.99

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

$ 21.21 USD

Add to Wish List

Qty

Sale - Save 21%

$ 26.99

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

$ 21.21 USD

Add to Wish List

Crankcase Vent Valve

10X Entries Into Our F80 M3 Sweepstakes

T#:8741204

Part#: 11157501567

In Stock

Sale - Save 26% $ 28.99

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

$ 21.50 USD

Add to Wish List

Qty

Sale - Save 26%

$ 28.99

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

$ 21.50 USD

Add to Wish List

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

For vehicles with production date up to 10/2003 For vehicles with production date from 01/2000

10X Entries Into Our F80 M3 Sweepstakes

T#:640502

Part#: 11617504535

In Stock

Sale - Save 20% $ 24.99

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

$ 19.99 USD

Add to Wish List

Qty

Sale - Save 20%

$ 24.99

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

$ 19.99 USD

Add to Wish List

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.

Show More Show Less

Oil Separator Hose - E46, Z4

10X Entries Into Our F80 M3 Sweepstakes

T#:579880

Part#: 55080

In Stock

Sale - Save 20% $ 24.99

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

$ 19.99 USD

Add to Wish List

Qty

Sale - Save 20%

$ 24.99

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

$ 19.99 USD

Add to Wish List

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

Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

For vehicles with production date up to 10/2003

10X Entries Into Our F80 M3 Sweepstakes

T#:640147

Part#: 11611432559

In Stock

Sale - Save 22% $ 23.99

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

$ 18.76 USD

Add to Wish List

Qty

Sale - Save 22%

$ 23.99

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

$ 18.76 USD

Add to Wish List

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

Crankcase Ventilation Hose

For vehicles with production date from 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:30629689

Part#: 11157532649

In Stock

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

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

Air Adjustment Unit/DISA Valve Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:15677538

Part#: 11617533344-KT

In Stock

Sale - Save 25% $ 162.99

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

$ 122.12 USD

Add to Wish List

Qty

Sale - Save 25%

$ 162.99

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

$ 122.12 USD

Add to Wish List

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

Show More Show Less

Oil Separator Kit - Level 1

10X Entries Into Our F80 M3 Sweepstakes

T#:15710823

Part#: E46M5411_61KT

In Stock

Sale - Save 24% $ 123.99

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

$ 93.71 USD

Add to Wish List

Qty

Sale - Save 24%

$ 123.99

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

$ 93.71 USD

Add to Wish List

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

Show More Show Less

Idle Control Valve Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:15744026

Part#: 11611437453-KT

In Stock

$ 173.13 USD

Add to Wish List

Qty

$ 173.13 USD

Add to Wish List

Located in the intake system, this part is a common source of idle issues. This kit includes a new mount and idle control valve grommet

02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...

10X Entries Into Our F80 M3 Sweepstakes

T#:47439371

Part#: 02SB1815

Ships on May 10, 2027

Sale - Save 39% $ 3.99

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

$ 2.44 USD

Add to Wish List

Qty

Sale - Save 39%

$ 3.99

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

$ 2.44 USD

Add to Wish List

Easily add an oxygen sensor to your custom exhaust setup with this universal O2 sensor bung. Designed for simple weld-on installation, it allows you to place your sensor exactly where you need it—perfect for custom builds, exhaust modifications, or performance tuning projects.

Features:

CNC-cut from T304 Stainless Steel for corrosion resistance
Threaded for M18x1.5mm RH oxygen sensors

Show More Show Less

Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38

Up to Model Year 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:640144

Part#: 13411733217

Back Ordered

Sale - Save 10% $ 10.99

This product was last offered at the strikethrough price on
10-08-2026

$ 9.89 USD

Add to Wish List

Qty

Sale - Save 10%

$ 10.99

This product was last offered at the strikethrough price on
10-08-2026

$ 9.89 USD

Add to Wish List

This grommet is located on the back side of the PCV or idle control valve

Project Cars

SELECT YOUR BMW

Emissions System for BMW Z3 (1996-2002)

Sub-Categories

Comprehensive Constant Pressure Valve Replacement Kit

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

Performance Oil Separator Kit - M52/S52

Crankcase Vent Hose

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

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

Leak Detection Pump - Priced Each

Vacuum Control Valve

Crankcase Vent Valve

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

Oil Separator Hose - E46, Z4

Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

Crankcase Ventilation Hose

Air Adjustment Unit/DISA Valve Kit

Oil Separator Kit - Level 1

Idle Control Valve Kit

02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...

Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38

Select Vehicle

Purpose

Category

Brand

Price

Shipping

Narrow Results