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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$ 45.49 USD

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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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$ 242.19 USD

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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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Earn 5% back in Turner Rewards on orders placed 10/28-10/31. Redeem 11/27-12/1. Terms & conditions apply
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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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$ 28.69 USD

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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.

Rein Oil Pan Gasket - 11131437237 - E36, E46, E34, E39, E60, E61, E53...

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T#:370783

Part#: 11131437237

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$ 28.99 USD

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Metal / Rubber gasket

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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THINKOBD 100

T#:2302720

Part#: 301050512

Ships in 1 day

14% off MSRP $ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.99 USD

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$ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.99 USD

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This THINKOBD 100 obd2 car code reader can fast scan and clear trouble codes, even a beginner can use this unit to read the error code.

OEM IWIS Lower Timing Chain - E36, E46, E39, Z3 E60

T#:362220

Part#: 11311432176

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$ 84.99 USD

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IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair, but ultimately improve the way your engine runs.

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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$ 45.74 USD

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Oil Pump Chain - E36 E46 E34 E39 Z3 Z4

T#:14529

Part#: 11417576915

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$ 52.99 USD

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This is an OEM oil pump chain for BMW's with the M50/M52/M54/S50/S52 6 cylinder engine. We recommend replacing the oil pump chain any time you remove the oil pump from the car.

IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair but ultimately improve the way your engine runs.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2005 E83 BMW X3 2.5i X3 3.0i
1996-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 Z3 BMW M Roadster M Coupe
2003-2006 E85 BMW Z4 2.5i Z4 3.0i

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Iwis Timing Chain - Upper

T#:1196187

Part#: 11311432177S1

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$ 40.86 USD

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The timing chain in any vehicle can begin to stretch and rattle over time. This is a common issue, and though BMW says it is a lifetime part, most enthusiasts decide to change them. If you need only the timing chain instead of a kit, ECS Tuning has your replacement.

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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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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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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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Crankcase Vent Hose

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T#:30629661

Part#: 11157831311

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$ 22.39 USD

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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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Oil Pump Chain - E46 M3, Z3M Z4M with S54 engine

T#:34869

Part#: 11411401399

Ships in 1 Business Day

$ 30.29

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$ 27.53 USD

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This is an OEM oil pump chain for BMW's with the S54 6 cylinder engine. We recommend replacing the oil pump chain any time you remove the oil pump from the car.

IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair, but ultimately improve the way your engine runs.

This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe

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Rein Rear Crankshaft Seal - 11142249533 - E30, E36, E46, E34, E39, E6...

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T#:361056

Part#: 11142249533

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$ 22.99 USD

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Rein Rear Crankshaft Seal for many BMW models is an OE-equivalent replacement for the rear main oil seal. When the seal fails, oil drips onto the driveway and can reach the clutch surface. Replacing it during a clutch job is the practical time to do it, since the transmission is already out.

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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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$ 37.09 USD

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Rein M52 M54 Water Pump Pulley - 11511436590 - E46, E39, E60, E83, E5...

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T#:591711

Part#: 11511436590

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$ 50.99

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10-22-2026

$ 46.99 USD

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A common failing piece due to the plastic design.

407 Piece O-Ring Assortment

T#:1809147

Part#: W5202

In Stock at Vendor

$ 21.99 USD

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$ 21.99 USD

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Nitrile Butadiene Rubber

Rein VANOS Oil Feed Line - 11361705532 - E36, E46, E39, E60, E83, E53...

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T#:4471

Part#: 11361705532

Ships on Nov 30, 2026

$ 61.99

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06-04-2026

$ 53.99 USD

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This oil pipe hose runs from the VAN0S adjusting unit to the oil filter housing. At some point the rubber line shrinks or cracks and oil can weep out of the swedge fittings. The fittings at the banjo bolts can also leak so replacing the seals for each banjo fitting is strongly recommended.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3 3.2
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i

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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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$ 26.39 USD

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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

Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617504535 - E46,...

For vehicles with production date from 01/2000

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T#:378292

Part#: 11617504535

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$ 22.99 USD

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Runs from the top of the oil separator up to intake manifold.

3/8" Dr. 5/8" Extended Spark Plug Socket

T#:2242226

Part#: W80533

Ships in 1 Business Day

$ 20.25 USD

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Extended socket length reaches confined areas.

Piston Ring Comp 3-1/2" to 7"

T#:2242223

Part#: W80573

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$ 22.99 USD

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Use to install pistons on most passenger cars and truck engines

Timing Chain - Upper

T#:362341

Part#: 11311432177

In Stock

$ 45.92

This product was last offered at the strikethrough price on
08-23-2026

$ 37.99 USD

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$ 37.99 USD

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This is the upper timing chain that connects the 2 camshaft sprockets on cars with the M50, M52, M54, S50 or S52 engines. If you need the lower timing chain that connects the crankshaft to the upper sprocket you can find it Here .

IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair but ultimately improve the way your engine runs.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
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 Z3 M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i

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Hydraulic Alternator Belt Tensioner Assembly

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

T#:55030822

Part#: 11287838797

In Stock

Sale - Save 20% $ 59.99

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

$ 47.99 USD

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Sale - Save 20%

$ 59.99

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

$ 47.99 USD

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Blue WG38 Gen V Ultra-Gate 38 - 14PSI

T#:22591972

Part#: TS-0551-1011

In Stock at Vendor

10% off MSRP $ 430.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 387.99 USD

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10% off MSRP

$ 430.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 387.99 USD

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The Gen V WG38 Ultra-Gate 38 external wastegate is your cost-effective, high-performance solution. This 38mm external wastegate is meticulously designed for hassle-free bolt-on applications that make use of the 2-bolt flange.

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Autel Autolink AL329

T#:2914116

Part#: AL329

Ships in 1 Business Day

$ 49.99 USD

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$ 49.99 USD

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OBDII Code Reader

Rein M52 M54 Power Steering Pump Pulley - PKP0124 - E36, E46, E39, E5...

2X Entries Into Our F80 M3 Sweepstakes

T#:53750207

Part#: PKP0124

In Stock

$ 41.99 USD

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$ 41.99 USD

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Upgrade the Plastic Pulley in Your BMW with an All Aluminum Construction Replacement from Rein

Rein M50 M52 Piston Ring Set - Priced Each - 11251437077 - E36, E46, ...

2X Entries Into Our F80 M3 Sweepstakes

T#:379819

Part#: 11251437077

Ships in 3 Business Days

$ 31.99 USD

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$ 31.99 USD

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Standard bore replacement piston rings

Rein Vent Hose - 11157513756 - E46 325i 325Ci

2X Entries Into Our F80 M3 Sweepstakes

T#:594296

Part#: 11157513756

Ships in 3 Business Days

$ 35.75

This product was last offered at the strikethrough price on
08-13-2026

$ 30.99 USD

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$ 30.99 USD

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Connects the intake manifold to the valve cover

Iwis Timing Chain (Double Row) - E46 Z3 Z4

T#:596635

Part#: 11317830869

Ships in 1 Business Day

$ 204.99

This product was last offered at the strikethrough price on
08-13-2026

$ 121.99 USD

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$ 121.99 USD

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Piston Ring Comp 2-1/8" to 5"

T#:2242222

Part#: W80572

Ships in 1 Business Day

$ 21.99 USD

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$ 21.99 USD

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Use to install pistons on most passenger cars and truck engines

Rein M52 M54 Upper Oil Separator Vent Tube (CCV) - 11617533399 - E46,...

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T#:552486

Part#: 11617533399

Ships in 1-2 days

$ 35.99 USD

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$ 35.99 USD

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Runs from the top of the oil separator up to rear of the intake manifold.

Rein Exhaust Valve - E34, E36, E39, E46, Z3

2X Entries Into Our F80 M3 Sweepstakes

T#:379738

Part#: 11341739823

Ships on Nov 30, 2026

$ 20.99 USD

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$ 20.99 USD

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Replacement exhaust valve

Rein Vibration Damper - 11237513862 - E46, E39, E60, E83, E53 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:38161721

Part#: 11237513862

Ships in 3 Business Days

$ 92.99 USD

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$ 92.99 USD

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Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

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

T#:640147

Part#: 11611432559

In Stock

Sale - Save 30% $ 23.99

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

$ 16.79 USD

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Sale - Save 30%

$ 23.99

This product was last offered at the strikethrough price on
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

Rein Dipstick O-Ring - 11431740045 - E36, E46, E39, E60, E83, E53 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:6857

Part#: 11431740045

In Stock

$ 7.13 USD

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$ 7.13 USD

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ENGINE O-RING 11431740045

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

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

T#:640158

Part#: 11137535106

In Stock

Sale - Save 30% $ 5.99

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

$ 4.17 USD

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Qty

Sale - Save 30%

$ 5.99

This product was last offered at the strikethrough price on
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!

Project Cars

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

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