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

Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8

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T#:395203

Part#: 12617508003

In Stock

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11-07-2026

$ 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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Sale - Save 30% $ 345.99

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

$ 242.19 USD

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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!

OEM Lemforder Hydraulic Motor Mount - E36 E46 E9X Z3 Z4

T#:378218

Part#: 11812283798

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$ 99.99 USD

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$ 99.99 USD

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OEM Lemförder motor mounts are the perfect replacement to prevent vibrations and knocks from continuing.

E46 M54 - Aluminum Valve Cover

For vehicles with a production date from 09/2002+

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T#:14916007

Part#: 127512839M

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Sale - Save 30% $ 456.99

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

$ 319.89 USD

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Replace your factory plastic valve cover with this durable aluminum replacement from Bremmen Parts!

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

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T#:2528129

Part#: 11617533400S1

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Sale - Save 30% $ 112.99

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

$ 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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11-07-2026

$ 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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Spark Plug Gapper Tool BMS Billet

T#:26404907

Part#: 12MMSPG

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$ 35.00 USD

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Spark Plug Gapper Tool BMS Billet is essential for accurately adjusting the gap of spark plugs. This precision tool ensures that each plug is set to the exact specifications required for optimal engine performance. Made in the USA, it features a 12mm plug thread size, making it suitable for a wide range of applications.

Precision Adjustment: Allows for accurate gap adjustments to ensure optimal spark performance and engine efficiency.
Speed and Efficiency: Streamlines the process of gapping plugs while maintaining high precision, saving time and effort.
High-Quality Construction: Crafted from billet materials for durability and reliability, ensuring long-term use.
Lifetime Replacement Program: Comes with a lifetime replacement guarantee, reflecting confidence in the tool's quality and performance.

Upgrade your spark plug maintenance with the Spark Plug Gapper Tool BMS Billet for a reliable and precise solution.

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Glyco Connecting Rod Bearing Set

T#:375825

Part#: 11241284849

Ships in 1 Business Day

$ 92.02

This product was last offered at the strikethrough price on
07-15-2026

$ 84.66 USD

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Standard bore - 45mm

OEM Starter Motor - E46 M3 2001-2006

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T#:2988

Part#: 12417835735

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$ 389.99 USD

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This is the starter motor for BMW E46 M3 2001-2006 is an OEM Valeo unit.

This item fits the following BMWs:
2001-2006 E46 BMW M3. M3 Convertible
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2005-2008 E85 BMW Z4 M Roadster Z4 M Coupe

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Timing Chain - Lower

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T#:5470993

Part#: 11311432176

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$ 25.19 USD

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

Fuel Pump - E46 M3

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T#:584116

Part#: 16142229684

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This product was last offered at the strikethrough price on
08-05-2026

$ 178.49 USD

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This is the in-tank fuel pump for the E46 M3. The fuel pump in your vehicle is essential for delivering the proper amount of fuel at the correct pressure. Usually, they fail unexpectedly and at the worst possible time. Replace yours to prevent being stranded with a broken fuel pump. This fuel pump installs easily in the place of your broken or worn pump. All wiring connections are the same to make this an easy plug and play installation. Don't take a chance on an inferior fuel pump from the local auto store that may leave you stranded again. Choose a quality unit to ensure thousands of worry free miles. Includes seal.

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Camshaft Position Sensor - E46 M3, Z4M, Z3M S54

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T#:36913379

Part#: 12147539171

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11-07-2026

$ 64.39 USD

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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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$ 58.09 USD

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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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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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11-07-2026

$ 45.74 USD

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Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4

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T#:641646

Part#: 11617501566S1

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

$ 68.59 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. Level 1 kit includes the following; Oil separator Hose from oil separator to dipstick tube Hose from oil separator to valve cover Hose from intake manifold back to the connector hose Hose from oil separator up to the intake manifold

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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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11-07-2026

$ 50.24 USD

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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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Glyco "Yellow" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E...

T#:375823

Part#: 11211706847

Ships in 1-3 days

$ 136.06

This product was last offered at the strikethrough price on
07-15-2026

$ 125.73 USD

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$ 125.73 USD

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Standard bore

Bremmen Cylinder Head Valve Cover - E39 E46 E53 Z3 (M52 M54) ...

For vehicles with production date up to 09/2002

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T#:3657913

Part#: 11121432928

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$ 186.19 USD

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OEM quality replacement valve cover and gasket for a damaged or cracked valve cover.

Bremmen Fuel Pump Assembly

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T#:554618

Part#: 16146766942

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11-07-2026

$ 104.29 USD

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Ensure optimal fuel delivery for your BMW with a replacement fuel pump. This essential component guarantees the right fuel amount at the correct pressure, preventing unexpected failures.

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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11-07-2026

$ 37.09 USD

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E46 M3, MZ3 S54 OEM Valeo Alternator (New)

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T#:377735

Part#: 12317831436

In Stock at Vendor

$ 522.00

This product was last offered at the strikethrough price on
07-16-2026

$ 473.99 USD

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$ 473.99 USD

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The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator.

This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies.

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Billet Spark Plug Gapper Tool - 14mm - BMS

T#:583132

Part#: BMSBSPGT14MM

Ships in 7 Business Days

$ 35.00 USD

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$ 35.00 USD

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BMS Billet Spark Plug Gapper Tool - 14mm is an essential tool for achieving accurate and consistent spark plug gapping, ideal for automotive enthusiasts and professional mechanics alike. This precision tool helps maintain optimal plug performance by providing reliable, consistent gaps. Available in both 14mm and 12mm plug thread sizes, this tool is proudly made in the USA to deliver durability and precision.

Precisely gaps spark plugs for enhanced engine performance and efficiency
Speeds up the gapping process while ensuring accuracy and uniformity
Available in two sizes (14mm and 12mm) for a wider range of compatibility
Optional specialty feeler gauge included with 4 blades in thicknesses of .018, .020, .022, and .024
Made in the USA for premium quality and durability

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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

Sale - Save 20% $ 32.99

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11-07-2026

$ 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

Aluminum Valve Cover

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T#:46753497

Part#: 11127838754

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Sale - Save 24% $ 549.99

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11-07-2026

$ 419.99 USD

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$ 419.99 USD

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OMP Battery Cut Off Switch / Kill Switch

T#:1614

Part#: EA-462

Back Ordered

$ 65.00 USD

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$ 65.00 USD

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OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.

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Hydraulic Alternator Belt Tensioner Assembly

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T#:55030822

Part#: 11287838797

In Stock

Sale - Save 20% $ 59.99

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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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Extended Spark Plug Socket

T#:391150

Part#: SUU884506

In Stock

9% off MSRP $ 31.99

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

$ 28.99 USD

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9% off MSRP

$ 31.99

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

$ 28.99 USD

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3/8" drive socket with 5/8" opening for most spark plugs

Active Autowerke Rotrex Traction Fluid - 1 Liter

T#:57616348

Part#: RTF-1L

Ships in 3 Business Days

7% off MSRP $ 140.00

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

$ 130.00 USD

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7% off MSRP

$ 140.00

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

$ 130.00 USD

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Rotrex superchargers utilize a unique traction drive system that sets it apart from other centrifugal-style superchargers. For best performance, Rotrex recommends replacing this fluid every 50,000 miles. This bottle of traction fluid is plenty enough for one supercharger service (typically 750ml).

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Glyco "Yellow" Crankshaft Bearing Shell - Set - E30, E36, E39, E46, E...

T#:375824

Part#: 11211706850

In Stock at Vendor

$ 126.61

This product was last offered at the strikethrough price on
07-15-2026

$ 119.33 USD

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59.75MM(+0.25) bore

Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54

T#:48850072

Part#: 12147539165

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$ 41.99 USD

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$ 41.99 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 drivabilty issues. Uses O-ring # 12 141 748 398 (not included)

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Active Autowerke - S54 Supercharger Kit (Level 1) - E46 M3 (Manual Tr...

For vehicles with 6 speed transmissions

T#:397296

Part#: 12-023

Ships in 10 Business Days

5% off MSRP $ 11,249.00

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

$ 10,686.99 USD

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5% off MSRP

$ 11,249.00

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

$ 10,686.99 USD

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Since getting their start in 1981, Active Autowerke has earned a well-respected reputation in the BMW community for engineering high-quality power solutions for popular BMW models. This supercharger kit will produce 525 horsepower and 335 ft.lbs. of torque on your BMW, while retaining platform integrity and daily driveability. Unique to the design of the Rotrex supercharger is the traction drive system, which eliminates the lag often found in other centrifugal supercharger setups. Power delivery is smooth and dependable, and 100% reversible to stock if you so choose, since each system is designed as a self-contained unit.

Kit features:

Rotrex 92 trim supercharger running 7 PSI of boost
Supercharger bracket, pulleys, & belt
Self-contained oiling system with front-mount oil cooler
6 high-flow fuel injectors
Colder heat range spark plugs
Active Autowerke Generation 7 intake manifold with dual bypass valve
Front mount air-to-air intercooler
Active Autowerke air filter
Active Autowerke dyno-tuned software
All mounting hardware, plumbing, hoses, & clamps
Illustrated instruction manual & installation guide
2 year warranty with free tech support

Performance Specs:

Power : 525 BHP @ 7650 rpm
Torque : 335 ft/lbs @ 5400 rpm
Boost Level : 7-8 psi

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Glyco "Green" Crankshaft Bearing Shell - Set - E39, E46, E53, E83, Z3...

T#:374671

Part#: 11211706848

Ships in 1 day

$ 194.32 USD

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Standard bore

TurboSmart WG38 Gen V Ultra-Gate 38 - 14PSI - Black

T#:4921469

Part#: TS-0551-1012

Ships on Nov 30, 2026

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 Turbosmart GenV range is the Highest Flowing Wastegate range in the World. The GenV WG38 UltraGate38 External Wastegate is a Motorsport proven, cost-effective external wastegate. The GenV provides extensive user configuration, world-leading extended thermal performance, fatigue resistance, and best-in-class flow performance for optimum control and longevity. The GenV External Wastegate from Turbosmart was a ground-up rework of a classic and the only feature that rolled over from the Gen4 range was the mounting orientation. CFD optimized and validated in-house for maximum flow and thermal management, the GenV range has more features, options and performance than any other gate like it. A direct fit upgrade to all Gen4 Turbosmart wastegates and feature our unique collar-locking system, variable actuator cap, and base for easy, 360-degree optional routing of reference hoses, optional liquid-cooling provision, 1/8″ NPT reference ports and are provided with the full range of available springs.

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OEM Valeo Alternator - 120amp - E39 E46 E53 Z3, M54 with Valeo Altern...

We Price Match - Give Us A Call or Chat!

T#:371896

Part#: 12317501599

Ships on Dec 7, 2026

$ 323.99 USD

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$ 323.99 USD

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The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator.

This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies. Valeo is an OEM manufacturer for many BMW alternators - save money by buying the same alternator in a different box!

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Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

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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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$ 23.99

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$ 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

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

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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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$ 5.99

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$ 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!

Mini Screw Clamp

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T#:367185

Part#: 21014

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$ 3.99 USD

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Ideal for low pressure hoses. This hose clamp could be used on many vehicles for many different purposes.

Vacuum Control Valve

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T#:47850818

Part#: 11747810831

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11-07-2026

$ 19.59 USD

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Lower Timing Chain Tensioner

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T#:5470988

Part#: 11311703717

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$ 12.59 USD

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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

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

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T#:640161

Part#: 11121738607

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$ 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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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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Lower Timing Chain Guide Rail

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T#:5470998

Part#: 11311726480

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$ 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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Crankcase Ventilation Hose

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T#:30629689

Part#: 11157532649

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11-07-2026

$ 11.19 USD

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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.

Rubber O-Ring - Bremmen Parts

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T#:22525960

Part#: 11531435808

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$ 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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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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Gas Cap

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T#:48539230

Part#: 16117222391

Ships on Feb 17, 2027

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This product was last offered at the strikethrough price on
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$ 15.74 USD

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

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