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

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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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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

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$ 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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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MIN...

T#:39971046

Part#: BM-0006-BCG

In Stock

$ 65.00 USD

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$ 65.00 USD

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AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MINI Models is a premium exterior upgrade crafted from genuine carbon fiber, designed to enhance the aggressive styling and performance aesthetic of compatible BMW and MINI vehicles with an easy, OEM-fit installation.

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Electric Valve - For Secondary Air System Or Exhaust Flap

T#:362205

Part#: 11747810831

In Stock

$ 74.99

This product was last offered at the strikethrough price on
07-09-2026

$ 42.19 USD

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$ 42.19 USD

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This electric valve serves one of several purposes depending on which car it is used on. Please read the application listings below to ensure you are purchasing the correct part.

Pierburg pumps are some of the most trusted and widely used on the market. From fuel, water, air and vacuum Pierburg has you covered with OE quality and reliable performance year after year.

This item fits the following BMWs:
Secondary Air System Valve
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2003-2005 E46 BMW 325i 325ci (M56)
1997-2003 E39 BMW 525i 528i 530i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1997-2000 Z3 BMW M Roadster M Coupe (S52)

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Secondary Air Pump - E46 E53 E60 E63 E83

T#:362211

Part#: 11727571589

In Stock

$ 358.99 USD

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$ 358.99 USD

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This secondary air pump helps to reduce emissions by mixing fresh air with the exhaust. When this part fails cause a engine fault code and it will trigger a "service engine soon" light.

This item fits the following BMWs:
3/2003-2005 E46 BMW 325i 325ci 325xi 330i 330ci 330xi
2004-2005 E60 BMW 525i 530i
2004-2010 E60 BMW 545i M5
2004-2011 E63 BMW 645ci M6
10/2003-2006 E53 BMW X5 3.0i
2004-2005 E83 BMW X3 3.0i

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Pierburg Air Pump Control Valve (EGR) - E46, E83

For vehicles with production date from 03/2003

T#:19278

Part#: 11727553066

Special Order: No Guaranteed ETA

$ 105.99 USD

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$ 105.99 USD

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OEM BMW ENGINE VALVE

Pierburg Secondary Air Pump - E46

For vehicles with production date up to 03/2003

T#:362210

Part#: 11727553056

Ships in 1-2 days

$ 328.99 USD

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$ 328.99 USD

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This secondary air pump fits BMW E46 323i 323ci 325i (m54) 325ci (m54) 325xi 328i 328ci 330i 330ci thru 2003, 330xi thru 2005. This part helps to reduce emissions by mixing fresh air with the exhaust. When this part fails cause a engine fault code and it will trigger a "service engine soon" light.

This item fits the following BMWs:
1999-2000 E46 BMW 323i 323ci 328i 328ci
2001-3/2003 E46 BMW 325i 325ci - only with M54 engine
2001-2005 E46 BMW 325ci Convertible 325xi
2001-3/2003 E46 BMW 330i 330ci
2001-2005 E46 BMW 330xi

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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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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

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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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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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Pierburg Secondary Air Valve

T#:373991

Part#: 11727837456

Ships in 2 Business Days

$ 234.10

This product was last offered at the strikethrough price on
09-15-2026

$ 108.85 USD

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$ 108.85 USD

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Also known as an EGR valve

Oxygen Sensor - Priced Each

T#:22064620

Part#: 11781247406

Special Order: No Guaranteed ETA

$ 55.99 USD

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$ 55.99 USD

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