Emissions System for BMW X Series E53 (2000-2006)

OEM Bosch Fuel System Evaporative Leak Diagnosis Pump - E46 E9X E82 +...

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T#:19449

Part#: 16137193479

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$ 90.99

This product was last offered at the strikethrough price on
03-16-2026

$ 68.99 USD

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Replace the defective leak diagnosis pump -often referred to as the "DTML pump" - on your BMW with this OEM unit from Bosch. This part detects vapor leaks in the fuel evaporative system.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i 135is 1M Coupe
2002-2005 E46 BMW 325i 325ci 325xi 330i 330ci 330xi M3
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2013 E93 BMW 328i 335i M3 - Convertible
2002-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i M5
2010-3/2012 F07 BMW 535i GT, 535i xDrive GT, 550i GT, 550i xDrive GT
3/2012+ F07 BMW 550i GT, 550i xDrive GT
2011-3/2012 F10 BMW 528i (N52) 528i xDrive 535i 535i xDrive 550i 550i xDrive
3/2012+ F10 BMW 550i 550i xDrive
2004-2010 E63 BMW 645ci 650i M6
2012-3/2012 F12 BMW 640i 650i 650i xDrive
3/2012+ F12 BMW 650i 650i xDrive
2002-2006 E65 BMW 745i 745li 750i 750li 760i 760li
2009+ F01 BMW 740i 740li 750i 750li 750i xDrive 750li xDrive
2013+ E84 BMW X1 sDrive28i X1 xDrive28i X1 xDrive35i
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2011 F25 BMW X3 xDrive28i
2011+ F25 BMW X3 xDrive35i
2002-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35i X5 xDrive48i X5 xDrive50i X5M
2008+ E71 BMW X6 xDrive35i X6 xDrive50i X6M
2002-2002 Z3 BMW Z3 2.5i Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
2009+ Z4 BMW Z4 sDrive28i Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is
2002-2003 E52 BMW Z8 Roadster

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OEM Bosch Oxygen Sensor - mounts before catalytic converter - E46 E39...

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T#:2998

Part#: 11781742050

In Stock

$ 96.08

This product was last offered at the strikethrough price on
05-29-2026

$ 90.99 USD

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This direct fit Bosch oxygen sensor plugs directly into your factory connector. It is the pre-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E46 E39 E38 X3 X5 Z3 Z4. Bosch # 13 477.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi 330ci
1999-2003 E39 BMW 525i 528i 530i M5
1997-2003 E39 BMW 540i
1995-2001 E38 BMW 750il
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8

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

T#:383333

Part#: 003779ECS06KT

In Stock

Sale - Save 25% $ 95.99

This product was last offered at the strikethrough price on
06-13-2026

$ 71.99 USD

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$ 95.99

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06-13-2026

$ 71.99 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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Bosch Oxygen Sensor - mounts after catalytic converter - E46 E39 X3 X...

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T#:2118

Part#: 11781433940

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$ 147.99 USD

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This is the post-cat oxygen sensor for cylinders 4-6 for BMW E46 E39 X3 X5 Z3 Z4. Bosch # 15 109.

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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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

For vehicles with production date up to 10/2003

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

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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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Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

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

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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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Radium Engineering Universal Catch Can Petcock Drain Kit

T#:27905095

Part#: 20-0024

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$ 28.99 USD

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Includes:

Anodized 4AN ORB Barbed Adapter Fitting, Black Ball Valve with 1/4" Barbs, 125psi @ 140F 4 feet of Radium 1/4" PCV Hose

Bosch BMW Oxygen Sensor - 11787530735

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T#:13056

Part#: 11787530735

In Stock at Vendor

$ 244.99

This product was last offered at the strikethrough price on
05-07-2026

$ 237.99 USD

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BOSCH REGULATING LAMBDA PROBE:117013

Bosch Oxygen Sensor - Mounts After Catalytic - E36 318i M44, E38 750i...

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T#:7079

Part#: 11781739845

In Stock at Vendor

$ 170.99

This product was last offered at the strikethrough price on
02-07-2026

$ 136.99 USD

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$ 136.99 USD

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This direct fit Bosch oxygen sensor (lambda sensor) plugs directly into your factory connector. Fits M44 engine 318i/is/ic and e38 750il M73N engine, and X5 4.4i 4.6is with M62 engine. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. Bosch part number 13755.

This is the post-catalytic converter oxygen sensor

This item fits the following BMWs:
1996-1998 E36 BMW 318i 318is 318ti 318ic
1999-2001 E38 BMW 750il
2000-2003 E53 BMW X5 4.4i X5 4.6is

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ECS Tuning Baffled Oil Catch Can - 8oz

T#:13496655

Part#: 003779ECS05-02

In Stock

Sale - Save 10% $ 238.99

This product was last offered at the strikethrough price on
06-14-2026

$ 215.09 USD

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$ 238.99

This product was last offered at the strikethrough price on
06-14-2026

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

T#:388889

Part#: N1.50X051

In Stock

Sale - Save 25% $ 5.99

This product was last offered at the strikethrough price on
06-13-2026

$ 4.49 USD

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$ 5.99

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06-13-2026

$ 4.49 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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Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm) - Priced Eac...

T#:637408

Part#: 028092ECS11AKT

In Stock

Sale - Save 25% $ 3.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2.99 USD

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$ 3.99

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06-14-2026

$ 2.99 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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Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...

For vehicles with production date up to 10/2003

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

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$ 24.99

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05-03-2026

$ 19.99 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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Oil Separator Hose - E46, Z4

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

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05-03-2026

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

Bosch Oxygen Sensor - Left Bank - E53

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T#:13055

Part#: 11787524530

In Stock

$ 162.67 USD

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BMW LAMBDA MONITOR SENSOR Oxygen Sensor

Bosch Oxygen Sensor - Right Bank - E53

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T#:13051

Part#: 11787506539

In Stock at Vendor

$ 142.38 USD

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$ 142.38 USD

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BMW LAMBDA MONITOR SENSOR - Bosch BMW Oxygen Sensor

Turner Oil Separator Kit - E53 X5 M62 4.4L 4.6L

T#:555308

Part#: 11151705237KT1

Back Ordered

Sale - Save 6% $ 208.99

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

$ 196.41 USD

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Sale - Save 6%

$ 208.99

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

$ 196.41 USD

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The rubber hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

This kit includes the needed hoses, oil separator, and hardware.

Fits the following BMWs:
1999-2006 E53 BMW with M62 4.4L 4.6L

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Emissions System for BMW X Series E53 (2000-2006)

Sub-Categories

OEM Bosch Fuel System Evaporative Leak Diagnosis Pump - E46 E9X E82 +...

OEM Bosch Oxygen Sensor - mounts before catalytic converter - E46 E39...

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

Bosch Oxygen Sensor - mounts after catalytic converter - E46 E39 X3 X...

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

Radium Engineering Universal Catch Can Petcock Drain Kit

Bosch BMW Oxygen Sensor - 11787530735

Bosch Oxygen Sensor - Mounts After Catalytic - E36 318i M44, E38 750i...

ECS Tuning Baffled Oil Catch Can - 8oz

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

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

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

Oil Separator Hose - E46, Z4

Bosch Oxygen Sensor - Left Bank - E53

Bosch Oxygen Sensor - Right Bank - E53

Turner Oil Separator Kit - E53 X5 M62 4.4L 4.6L

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