Emissions System for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

Is your BMW throwing emissions related codes? While we're primarily a BMW performance parts house, we understand the importance of maintaining your emissions system to pass inspection in your area and keep your check engine light off. Pick up your emissions related parts from Turner Motorsport.

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CCV/PCV Breather Hoses (3)

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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

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T#:640207

Part#: 11617501566

In Stock

Sale - Save 30% $ 32.99

This product was last offered at the strikethrough price on
11-07-2026

$ 23.09 USD

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Sale - Save 30%

$ 32.99

This product was last offered at the strikethrough price on
11-07-2026

$ 23.09 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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Engine Crankcase Breather Element

Superior performance for both warm and cold climates

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T#:35795496

Part#: 11617533400

In Stock

$ 41.99 USD

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$ 41.99 USD

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Commonly referred to as the "oil separator" or PCV URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.

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Oil Separator Hose - E46, Z4

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T#:579880

Part#: 55080

In Stock

Sale - Save 30% $ 24.99

This product was last offered at the strikethrough price on
11-07-2026

$ 17.49 USD

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Qty

Sale - Save 30%

$ 24.99

This product was last offered at the strikethrough price on
11-07-2026

$ 17.49 USD

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

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

For vehicles with production date from 01/2000

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T#:640502

Part#: 11617504535

In Stock

Sale - Save 30% $ 24.99

This product was last offered at the strikethrough price on
11-07-2026

$ 17.49 USD

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Qty

Sale - Save 30%

$ 24.99

This product was last offered at the strikethrough price on
11-07-2026

$ 17.49 USD

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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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Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

For vehicles with production date from 01/2000

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:638072

Part#: 11617504536

In Stock

Sale - Save 30% $ 26.99

This product was last offered at the strikethrough price on
11-07-2026

$ 18.89 USD

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Qty

Sale - Save 30%

$ 26.99

This product was last offered at the strikethrough price on
11-07-2026

$ 18.89 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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Emissions System for BMW 3 Series E46 (1999-2005)

Sub-Categories

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

Engine Crankcase Breather Element

Oil Separator Hose - E46, Z4

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

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

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