BMW Engine Parts for BMW 3 Series E46 (1999-2005)

Bav Auto High-Performance Ignition Coil - N20 N52 N54 N55 S55 ...

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T#:578618

Part#: 5005

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A simple yet effective upgrade, these Bav Auto High-Performance Ignition Coils feature modified core windings that offer increased firepower and promote a faster, more efficient burn. The result is greater low-end torque and increased horsepower in the mid to top-end. When used in a properly functioning engine, a noticeable difference can be felt. In addition to better torque and horsepower, fuel economy is also improved! These coils come with new spark plug boots. 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.

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Bav Auto High-Performance Ignition Coil - M62 M73 M52 M54 S52 S62 ...

For vehicles with production date up to 09/2002

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T#:579671

Part#: 5002

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A simple yet effective upgrade, these Bav Auto High-Performance Ignition Coils feature modified core windings that offer increased firepower and promote a faster, more efficient burn. The result is greater low-end torque and increased horsepower in the mid to top-end. When used in a properly functioning engine, a noticeable difference can be felt. In addition to better torque and horsepower, fuel economy is also improved! These coils come with new spark plug boots. 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 Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8

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T#:395203

Part#: 12617508003

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This is the oil level sensor / sender for BMW E46 E39 E60 E38 X3 X5 Z3 Z4 Z8.When this part fails it will illuminate a check light on the dash which indicates it needs to be replaced. Includes o-ring. This item fits the following BMWs: 1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi M3 2008+ E90 BMW 335d 1999-2003 E39 BMW 528i 525i 530i M5 1998-2003 E39 BMW 540i 2004-2005 E60 BMW 525i 530i 1998-2001 E38 BMW 740i 740il 750il 2004-2006 E85 BMW X3 2.5i X3 3.0i 2000-2006 E53 BMW X5 3.0i 2000-2003 E53 BMW X5 4.4i X5 4.6is 1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe 2003-2006 Z4 BMW Z4 2.5i Z4 3.0i 2000-2003 E52 BMW Z8

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Aluminum Valve Cover - M52 M54

For vehicles with production date up to 09/2002

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T#:19329477

Part#: 11121432928M

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Tired of dealing with plastic valve covers that crank and split, causing frustrating oil leaks? This upgraded aluminum valve cover is the perfect solution!

High-Performance Ignition Coil - Set Of 6

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T#:36337177

Part#: B50056KT

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Enhance your BMW's performance with the upgraded BAV Ignition Coil, designed to boost firepower and optimize engine efficiency. These coils boast modified core windings for a faster, more efficient burn, resulting in increased torque at lower RPMs and heightened horsepower in the upper range. While improvements depend on your engine's condition, these coils ensure noticeable enhancements in performance and potential fuel economy benefits.

Product Benefits:

Improved engine firepower and efficiency
Increased torque at lower RPMs
Enhanced horsepower in higher ranges
Potential improvement in fuel economy
Set of six for complete BMW Cooper replacement

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New Alternator - 120A

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T#:25042543

Part#: 12317501690

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$ 169.59 USD

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Bremmen "Cold Climate" Crankcase Pressure Regulator Valve Kit - BMW M...

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T#:2528129

Part#: 11617533400S1

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$ 79.09 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 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. Don't forget to order a valve cover gasket, throttle body gasket, and a new intake boot to make your separator change easier and more comprehensive.

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Bremmen Crankshaft Position Sensor - E36 E46 E39 E60 X3 X5 Z3 Z4 ...

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T#:640146

Part#: 12141709616

Ships on Jan 11, 2027

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This is the crank shaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Bremmen sensor to restore peak performance.

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Bav Auto Lower Timing Chain Sprocket - M50 M52 M52TU M54 S50 S52 ...

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T#:17871153

Part#: 11211719984

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This lower timing chain sprocket is located behind the crank pulley, directly on the crankshaft.

Upper Timing Chain Tensioner

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T#:599825

Part#: 11311738700

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Timing Chain - Lower

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T#:5470993

Part#: 11311432176

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The timing chain in your vehicle keeps the pistons and cylinders aligned and running in sync.

Camshaft Position Sensor - E46 M3, Z4M, Z3M S54

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T#:36913379

Part#: 12147539171

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The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance.

Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.

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Fuel Tank Breather Valve - 13907831770

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T#:37655984

Part#: 13907831770

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Over time, valves can fail, often getting stuck in one position and causing the engine to run poorly. This Fuel Tank Breather Valve is a simple replacement that resolves rough idling and helps clear engine codes, restoring smooth performance.

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Bav Auto Ignition Coil - N20 N52 N55 N54 N62 S55

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T#:578619

Part#: 12137571643A

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Restores your engines smooth operation with new ignition coils from Bav Auto! Boot included with coil. Same as 12131712219, 12130148594, 12130390064, 12137594938, 12137551049, 12137562744, 12137571643, 12138647689, 12137594937, 12137571643. 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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Mechanical A/C Belt Tensioner Assembly

For vehicles with production date up to 09/2002

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T#:26305100

Part#: 11281433571

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Alternator - 120amp

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T#:25042542

Part#: 12317831436

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$ 167.24 USD

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Crankcase Vent Hose

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T#:30629661

Part#: 11157831311

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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

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T#:640207

Part#: 11617501566

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$ 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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Bavarian Autosport M52/M54/S52 Exact-Fit Rubber Vanos Line

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T#:1105923

Part#: 000932LA01-02

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$ 62.69 USD

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We have seen so many M52/M54/S52 Vanos line failures at the track that we have to offer you a solution. The factory line is prone to failure due to the OEM hard-line - this rubber line alleviates the issues imposed by the factory design and enables you to worry less about your Vanos system. We trust ECS Tuning's Exact-Fit Stainless Steel lines for several different applications, and their M52/M54/S52 Vanos line is no exception. Bavarian Autosport's M52/M54/S52 Exact-Fit Rubber Vanos Line offers several benefits over OEM. Not is it they more durable and reliable OEM, but it is also easier to install, and significantly less expensive than the factory BMW Vanos line (11361705532) or other alternatives available on the market. If you're factory Vanos line hasn't failed yet, we still recommend replacing yours with Bavarian Autorsport's Exact Fit Rubber Vanos Line M52/M54/S52 to avoid eminent future failure.

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Leak Detection Pump - Priced Each

For vehicles with production date from 09/2001

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T#:35121140

Part#: 16137193479

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$ 50.24 USD

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Mechanical A/C Belt Tensioner Assembly

For vehicles with production date from 09/2002

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T#:32350880

Part#: 11287512758

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Bremmen Camshaft Position Sensor - E46 E39 E60 E83 Z3 Z4

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T#:640145

Part#: 12147518628

Ships on Dec 16, 2026

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A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivability issues

Hydraulic Alternator Belt Tensioner Assembly

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T#:55030822

Part#: 11287838797

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Vacuum Control Valve

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T#:47850818

Part#: 11747810831

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Bremmen Valve Cover Grommet Seal - BMW M50 M52 S50 S52 M54 S54 M60 M...

12 per valve cover 15 per valve cover

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T#:640162

Part#: 11121437395

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$ 1.59 USD

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Seals the valve cover where the bolts go through the valve cover to mount to the block.

Hydraulic Alternator Belt Tensioner Roller - 11281748131

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T#:30629659

Part#: 11281748131

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$ 13.29 USD

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This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

This high-quality replacement from Bremmen Parts is designed for exact fitment on your BMW. Whether you're looking to complete much-needed preventative maintenance, or replacing a failed roller, choose this component from Bremmen Parts for a lasting repair.

If you need the hydraulic belt tensioner, click here.

This item is 70mm Diameter. Please check the diameter before ordering.

This tensioner pulley fits the following BMWs: 1991-1995 E34 525i (M50 engine) 1992-1999 E36 325i, 325is, 328i, 328is, 323is 1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter) 1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner 1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner 2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner 2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner 2000-2006 X5 3.0 liter (E53 chassis) 2004 E60 525i, 530i (M54 engine) 1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe 2003-2009 Z4 M Coupe and Roadster

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Oil Separator Hose - E46, Z4

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T#:579880

Part#: 55080

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

Upper Timing Chain Guide Rail

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T#:26238413

Part#: 11311722651

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Timing Chain - Upper

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T#:17871154

Part#: 11311432177

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Zinc-Plated Steel M8 Washer - Priced Each

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T#:28171519

Part#: 91166A270-100

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$ 0.99 USD

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For M8 Screw Size, 8.4 mm ID, 16 mm OD

Lower Timing Chain Tensioner

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T#:5470988

Part#: 11311703717

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Guide used to tension the timing chain This item fits the following BMW Chassis: E34,E36,E39,E46,E53 X5,E83 X3,E85 Fits BMW Engines including: M50,M52,M54,M56,S52

Gas Cap

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T#:48539230

Part#: 16117222391

Ships on Feb 17, 2027

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Bremmen Engine Oil Drain Plug - Includes Seal - BMW B38 B48 B46 B58 ...

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T#:640158

Part#: 11137535106

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11-07-2026

$ 4.17 USD

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Reduce chances of an oil leak when changing your vehicle's motor oil with a new drain plug and seal!

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

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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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Bremmen Valve Cover SEcuring Nut - BMW M50 M52 S50 S52 M54

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T#:640161

Part#: 11121738607

Ships in 5 Business Days

Sale - Save 43% $ 4.99

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

$ 2.85 USD

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Ever lose one of these or round one off while working on your car? This is the nut used to hold the valve cover to the cylinder head. These usually need to be replaced after being removed more than once, as the rubber grommet will crush.. Sold Individually.

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Oil Pump Chain

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T#:17871159

Part#: 11411401399

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11-07-2026

$ 12.59 USD

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Lower Timing Chain Guide Rail

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T#:5470998

Part#: 11311726480

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11-07-2026

$ 13.99 USD

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Guide rail that is located opposite of the tensioner rail for lower timing chain. This item fits the following BMW Chassis: E36 M3,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4 Fits BMW Engines including: M50,M52,M54,M56,S50,S52

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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

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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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Crankcase Ventilation Hose

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T#:30629689

Part#: 11157532649

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$ 11.19 USD

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Locking Hex Nut - M6 - Priced Each

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T#:22558959

Part#: 94235A080

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$ 1.53 USD

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$ 1.53 USD

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Febi Relay - Replaces White/Green

We Price Match - Give Us A Call or Chat!

T#:16375128

Part#: 61368373700

Ships on Feb 10, 2027

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This product was last offered at the strikethrough price on
05-15-2026

$ 11.56 USD

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This relay is often the fuel pump relay for many BMW models. To ensure the relay is correct for your car please check the pin locations

Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

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T#:640147

Part#: 11611432559

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11-07-2026

$ 16.79 USD

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

Vanos Unit Piston Housing Seals - M52 M54 Engines

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T#:13891828

Part#: 01DVPHGS

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$ 17.59 USD

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High-quality replacement seals

Easy installation process

Prevents the need for reusing old gaskets

Ensures a complete seal for optimal VANOS system performance

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Bremmen Parts Fuel Injector O-ring - E38, E39, E46, E53, E60, E63, E6...

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T#:1196079

Part#: 13641437476

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11-07-2026

$ 2.99 USD

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Fits between injector and fuel rail

Bremmen Parts Outdoor Temperature Sensor / Probe - 65816936953 ...

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T#:30728992

Part#: 65816936953

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11-07-2026

$ 9.79 USD

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Rubber O-Ring - Bremmen Parts

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T#:22525960

Part#: 11531435808

Ships in 2 Business Days

Sale - Save 30% $ 2.03

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

$ 1.42 USD

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Useful for fixing leaks on air conditioning, fuel, and vacuum systems. Measures 20x3.

Idler Pulley

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T#:30629656

Part#: 11287841228

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$ 14.99 USD

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Starter Motor

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T#:55030826

Part#: 12412354693

Ships on Dec 15, 2026

Sale - Save 10% $ 129.99

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

$ 116.99 USD

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Valve Cover Gasket Set

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T#:57267777

Part#: 11120030496

Ships on Dec 15, 2026

Sale - Save 30% $ 29.99

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$ 20.99 USD

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Oxygen Sensor - Front Or Rear Manifold

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T#:56797107

Part#: 11787523434

Ships on Dec 15, 2026

Sale - Save 30% $ 119.99

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11-07-2026

$ 83.99 USD

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BMW Engine Parts for BMW 3 Series E46 (1999-2005)

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