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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Turner Universal Baffled Oil Catch Can Mounting Bracket Kit - BMW & M...

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T#:383333

Part#: 003779ECS06KT

In Stock

Sale - Save 30% $ 95.99

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

$ 67.19 USD

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$ 95.99

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

$ 67.19 USD

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If you don't wish to fabricate intricate brackets to mount your ECS Baffled Oil Catch Can we have the solution. ECS's three-piece bracket kit includes two options for securing the catch can. Choose from either a flat parallel mounting plate or a bent 90° mounting plate to give you 360° rotation for an infinitely adjustable mounting location.

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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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ECS Tuning Baffled Oil Catch Can - 8oz

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T#:13496655

Part#: 003779ECS05-02

In Stock

Sale - Save 10% $ 238.99

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

$ 215.09 USD

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Sale - Save 10%

$ 238.99

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

$ 215.09 USD

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Upgrade Your BMW with ECS Baffled Oil Catch Can

Modern emission regulations require a closed PCV/Breather system for cleaner operation. However, inefficient oil particle capture can lead to excessive oil vapor ingestion, causing carbon buildup, reduced performance, and fuel economy. ECS Tuning's updated ECS Baffled Oil Catch Can, now with an easy-to-empty 1/4" drain fitting, is engineered to collect toxic blow-by gases, minimize carbon deposits, and reduce oil contamination within engine oil. Recirculating oil vapor ensures emissions compliance without venting to the atmosphere.

Key Features:
Highly Efficient Oil Separator: Strategically positioned 4 chamber baffle system maximizes oil/air separation and minimizes oil droplets in the intake tract.
Integrated Dipstick: Knurled and black anodized oil dipstick simplifies oil volume inspection.
Reservoir: Available in 6oz or 8oz capacity with a 1/4" NPT drain plug fitting.
Serviceable: Easily removable baffle plates and drain plug for cleaning.
Easy/Customizable Installation: Combine with the ECS Universal Bracket Kit for simplified installation and adjustable mounting locations.
Leak-Free Fittings: Machined -10AN ORB (O-Ring Boss) fittings available for secure connections (fittings sold separately).

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Burgaflex Return Pipe - 11617504536 - E46, E39, E60, E83, E53 ...

For vehicles with production date up to 01/2000

T#:596611

Part#: 11617504536

In Stock

$ 17.99

This product was last offered at the strikethrough price on
09-26-2026

$ 13.99 USD

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$ 13.99 USD

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Keep your vehicle running crisp and leak-free with this premium return pipe manufactured by Burgaflex.

Burgaflex M52 M54 Crankcase Ventilation Hose (CCV) - 11157532649 - E4...

T#:596606

Part#: 11157532649

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$ 12.99 USD

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$ 12.99 USD

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Maintain peak engine health and precise air-fuel control by replacing your worn or cracked factory breather assembly with a premium Burgaflex replacement.

Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm) - Priced Eac...

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T#:637408

Part#: 028092ECS11AKT

Ships on Jan 11, 2027

Sale - Save 30% $ 3.99

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

$ 2.79 USD

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$ 3.99

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11-07-2026

$ 2.79 USD

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Upgrade your exhaust system with the Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm). This high-quality weld bung is made from stainless steel, ensuring durability and resistance to corrosion. It features M18x1.5mm threads, making it compatible with most oxygen sensors. Perfect for custom exhaust setups or replacing damaged bungs, this weld bung is a must-have for any automotive enthusiast.

Made from high-quality stainless steel for durability and corrosion resistance
M18x1.5mm threads ensure compatibility with most oxygen sensors
Ideal for custom exhaust setups or replacing damaged bungs
Essential for automotive enthusiasts looking to upgrade their exhaust system

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1.5mm X 51mm Metric Buna-N 70 O-ring

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T#:388889

Part#: N1.50X051

In Stock

Sale - Save 35% $ 5.99

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

$ 3.89 USD

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Sale - Save 35%

$ 5.99

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

$ 3.89 USD

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1.5mm X 51mm Metric Buna-N 70 O-ring is the perfect sealing solution for various industrial applications. Made from high-quality Buna-N material, this O-ring provides reliable sealing performance, ensuring leak-free connections. With its metric sizing and 70 durometer hardness, it offers versatility and durability for a wide range of uses.

High-quality Buna-N material
Reliable sealing performance
Metric sizing for versatility
70 durometer hardness for durability

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Meyle Oxygen Sensor - Post-Cat - E46 E39 X3 X5 Z3 Z4

For vehicles with production date up to 03/2003

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T#:5944219

Part#: 11781433940

Ships on Dec 4, 2026

$ 78.99 USD

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This is the post-cat oxygen sensor for cylinders 4-6 for BMW E46 E39 X3 X5 Z3 Z4. This item fits the following BMWs: 1999-3/2003 E46 BMW 323i 323ci 325xi 328i 328ci 330i 330ci 330xi 2001-3/2003 E46 BMW 325i 325ci only for cars with M54 engine 1999-2003 E39 BMW 528i 525i 530i 2004-2006 E83 BMW X3 2.5 - Bank 1 Only 2004-2006 E83 BMW X3 3.0i - Bank 1 - Automatic Transmission Only 2000-2006 E53 BMW X5 3.0i 1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 2003-2006 E85 BMW Z4 2.5i Z4 3.0i

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Meyle Oxygen Sensor - Pre-Cat - E36 Z3 M44, E31, E38, E39 M62 (97-98)...

For vehicles with production date up to 03/2003

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T#:5944214

Part#: 11781247406

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$ 57.99 USD

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This direct-fit Meyle oxygen sensor plugs directly into your factory connector. Fits M44 engine Z3 and 3 series and M62 engine E39, E38, E31 with V8 engines. No cutting or splicing is required. A new oxygen sensor can improve driveability and lengthen engine life. This is the pre-catalytic converter oxygen sensor

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"Cold Climate" Crankcase Pressure Regulator Valve

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T#:35829339

Part#: 11617533400

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$ 69.99 USD

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$ 69.99 USD

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BMW vehicles are prone to oil separators freezing in cold weather if driven before the engine is fully warmed up. This can lead to a howling noise followed by multiple oil leaks. The crankcase breather valve vents oil vapor from the engine block to the valve cover, but condensation can sometimes cause it to freeze, leading to a failure of the entire oil separator system, causing it to crack and break down. To prevent damage to your engine, it’s best to replace all components of the oil separator system at once. Replacing everything ensures reliable performance and durability. Remember to also order a valve cover gasket to make the replacement process easier.

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

Sub-Categories

Turner Universal Baffled Oil Catch Can Mounting Bracket Kit - BMW & M...

Engine Crankcase Breather Element

ECS Tuning Baffled Oil Catch Can - 8oz

Burgaflex Return Pipe - 11617504536 - E46, E39, E60, E83, E53 ...

Burgaflex M52 M54 Crankcase Ventilation Hose (CCV) - 11157532649 - E4...

Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm) - Priced Eac...

1.5mm X 51mm Metric Buna-N 70 O-ring

Meyle Oxygen Sensor - Post-Cat - E46 E39 X3 X5 Z3 Z4

Meyle Oxygen Sensor - Pre-Cat - E36 Z3 M44, E31, E38, E39 M62 (97-98)...

"Cold Climate" Crankcase Pressure Regulator Valve

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