BMW Maintenance & Tune-Up Parts for BMW 3 Series E46 (1999-2005)

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Part of owning a BMW is the relationships we develop with our cars through years of driving pleasure and maintenance services alike. It is critical to guarantee the job is right the first time. With recommended OEM supplied components and by following the maintenance schedule, your BMW is sure to continue giving you years of enjoyment on the street or track. All the filters, service kits, service manuals, fluids, and more are right here to help keep your BMW in perfect shape.

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M52/M54 Heavy Duty Expansion Tank Kit - E46, E53, E83
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:18003818
Part#: 008363LA02
In Stock
$ 499.99

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

$ 331.02 USD
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$ 331.02 USD
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Our Turner Motorsport's full aluminum expansion tank was designed and engineered in house to help with the weak point in your E46 cooling system. The coolant expansion tank goes through heat cycles over and over again from regular driving, it is important that your expansion tank is doing its job to retain coolant to keep your engine operating temperatures down and keep your engine bay clean. Not only is this a major upgrade but also a great maintenance item to replace. Our expansion tank was designed to fit the OEM hoses for an easy install and comes with all the upgraded items you will need for a clean install.

If your BMW needs a new expansion tank, make sure this is the last expansion tank you ever need to buy. Our coolant expansion tank has a full aluminum construction and wrinkle black powder coat for durability. Expansion tank kit comes with all the accessories you need to replace your expansion tank once, and never have to worry about it again.

Product Features:

Maintains stock coolant capacity and expansion volume
Designed to maintain OE coolant elevation, preventing air pockets
Baffled tank ensures that air pockets cannot be introduced during aggressive driving and provides accurate coolant level reading
Carefully designed bleed passage prevents the introduction of air as the engine cools
Turner engraved internal fill level
TIG welded 5052 aluminum construction
All bungs are machined to fit factory hose ends
Kit contents:

Turner Aluminum Expansion Tank
Coolant level sensor
Expansion tank cap
Flared coolant pressure release line
Hardware for installation
Product Development:

Turner expansion tanks are designed, engineered, tested and quality inspected by our Research and Development team at Turner. Nothing but the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer and rigorous long term product testing.

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ECS - Corporate Logo
T#:363707
Part#: 001977ECS03A
In Stock
Sale - Save 5% $ 104.99

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

$ 99.74 USD
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Sale - Save 5%
$ 104.99

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

$ 99.74 USD
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Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the M50/M52/M52TU/M54 engine in the E36, E46, Z3, Z4, and other models. It uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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Vargas Turbo Technologies - Corporate Logo
T#:558084
Part#: VTT-CRANK-BREATH
In Stock
$ 129.99 USD
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$ 129.99 USD
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VTT is happy to introduce the first and only available plug and play crankcase breather kits for ALL BMW applications that use the two-prong oil tab style oil fill caps. With this breather simply remove your oil cap, install the breather, and instantly free up horsepower, improve turbo draining, remove crankcase pressure, all while adding a cool look to your engine bay.

Can be used by itself with the stock PCV system to eliminate crankcase pressure, or with any number of PCV setups for the ultimate in crankcase pressure relieve 

Made from 6061-T6 Aircraft aluminum anodized black for a long-lasting finish, 4 stainless steel baffles for complete oil control, a PTFE one way check ball, a high-quality filter, and clamp all work together to keep crankcase pressure where it belongs, out of your crankcase.

This breather will fit:
 ALL BMW's with the two-prong style oil fill cap including but not limited to N54, N55, S55, S54

NOTE: NOT ALL THE MODELS LISTED HAVE THE SAME HOOD CLEARANCE, WE CANNOT SAY WHICH MODELS WILL HAVE CLEARANCE ISSUES, AND WHICH WILL NOT AS WE HAVE NOT TEST IT ON ALL MODELS. IF YOU ARE ORDERING THE BREATHER FOR ANYTHING OTHER THAN AN N54 TEST CLOSE YOUR HOOD CAREFULLY TO ENSURE CLEARANCE IF IT DOES NOT FIT LET US KNOW, AND WE WILL GET YOU A REFUND ONCE THE BREATHER IS RETURNED.

MODEL LIST OF REPORTED CLEARANCE ISSUES: N55 E/F 3 SERIES

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S54 3.2L High-Performance Ignition Service Kit
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:21966009
Part#: TMSS54IGNKT
Ships in 10 Business Days
Sale - Save 8% $ 320.99

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

$ 293.72 USD
Free Shipping
Sale - Save 8%
$ 320.99

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

$ 293.72 USD
Free Shipping
High-performance ignition kit for your S54 featuring spark plugs, Turner high-performance ignition coils, and dielectric grease to make sure you have no issues at your next maintenance interval! Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, and Spark). Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient, and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that gives your engine the performance and aesthetic you're looking for. All Turner Ignition coils are backed by a confidence-inspiring 2-year warranty. Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engine's health, performance, and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy. Features and Benefits: Increased performance New spark plugs and grease Direct fitment Signature Turner Blue ignition coils Ignition coils backed by a 2-year warranty
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E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:367060
Part#: 002778ECS01
Ships on Dec 7, 2026
Sale - Save 10% $ 100.99

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

$ 90.89 USD
Free Shipping
Sale - Save 10%
$ 100.99

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

$ 90.89 USD
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Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the S54 engine in the E46 M3, MZ3, and Z4M. It's the same size and uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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OEM Bosch Ignition Coil - Set of 6 - M54 S54 BMW
For vehicles with production date from 09/2002
Bosch - Corporate Logo
T#:340693
Part#: 12131712219
In Stock
$ 185.99 USD
Free Shipping
$ 185.99 USD
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Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.
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THINKCAR - Corporate Logo
T#:24444449
Part#: 3.03.04.0001
Ships in 1 Business Day
Sale - Save 20% $ 59.99

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

$ 47.96 USD
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Sale - Save 20%
$ 59.99

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

$ 47.96 USD
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The THINKEASY V2 Battery Tester is an advanced device designed for effortless and efficient diagnosis and monitoring of your car's battery condition. It incorporates the latest Bluetooth 5.0 technology, ensuring accelerated and reliable data transfer, along with a significant reduction in power consumption compared to other automotive battery testers. This versatile tester is compatible with a range of battery types, including regularly flooded, AGM flat plate, AGM Spiral, EFB, and gel batteries.


Powerful Capability:

  • Capable of testing 12V batteries with ratings from 100-2000 CCA.
  • Includes starter and alternator testing.

Versatile Battery Testing:

  • Compatible with multiple battery types, such as flooded, AGM flat plate, AGM spiral, and gel.
  • Test standards include CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE.

Convenient In-Vehicle and Out-of-Vehicle Testing:

  • Test batteries without having to remove them from the vehicle.

Complete Battery Analysis:

  • Performs Battery Health Test, Start System Test, Charging Health Test.
  • Provides a comprehensive test record.

Detailed Test Results:

  • Displays SOH, SOC, CCA Value, CCA rating, voltage, internal resistance, and more.

Quick and Accurate Results:

  • Provides reliable results in seconds with up to 99.9% accuracy.
  • Offers suggestions (Good, Recharge, Replace).
  • Polarity reverses connection protection.

Multilingual Support:

  •  Available in 7 languages: English, Spanish, German, Russian, Italian, French, and Portuguese.

Wide Applicability:

  • Suitable for use in automobile factories, garages, auto battery manufacturing, and by DIY enthusiasts, etc.
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Bosch - Corporate Logo
T#:348133
Part#: 12137594937T6KT
In Stock
$ 185.99 USD
Free Shipping
$ 185.99 USD
Free Shipping

Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Turner Motorsport S54 Power Pulley Kit
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:590358
Part#: PPK-S54
In Stock
Sale - Save 25% $ 418.99

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

$ 314.24 USD
Free Shipping
Sale - Save 25%
$ 418.99

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

$ 314.24 USD
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Upgrade your BMW's performance with Turner Power Pulleys, designed to enhance engine efficiency and increase available horsepower. These pulleys reduce the rotation of essential accessories by up to 10-20%, redirecting engine power to the wheels. Turner ensures these pulleys maintain proper functionality through rigorous on and off-track testing.

Crafted from durable T-6061 aluminum and finished in black hard anodizing, Turner Power Pulleys offer longevity, heat resistance, and chemical durability. They retain the stock-like appearance while providing increased strength and reduced weight, eliminating concerns about plastic failure.

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High-Performance Ignition Service Kit - M54 Late Model
For vehicles with production date from 10/2002
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:18070225
Part#: 12131712219TKT1
In Stock
Sale - Save 13% $ 267.77

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

$ 232.70 USD
Free Shipping
Sale - Save 13%
$ 267.77

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

$ 232.70 USD
Free Shipping

High performance ignition kit for your M54 featuring spark plugs, Turner high performance ignition coils and grease to make sure you have no issues at your next maintenance interval!

Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for.

Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy.

Features and Benefits:

Increased performance
New spark plugs and grease
Direct fitment
Signature Turner Blue ignition coils

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Enthusiast Bundles - Corporate Logo
T#:26504984
Part#: 011885SCH01A02KT
Ships on Sep 30, 2026
Sale - Save 25% $ 144.99

This product was last offered at the strikethrough price on
07-31-2026

$ 108.74 USD
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Sale - Save 25%
$ 144.99

This product was last offered at the strikethrough price on
07-31-2026

$ 108.74 USD
Free Shipping

EXTRACTOR:

The Schwaben 6.5 Liter Extractor empowers you with swift, hand-operated fluid extraction. Complete with two tubes of varying diameters to suit your unique needs, this system's vacuum release button guarantees seamless operation. Clearing 6.5 Liters (6.8 qts.) of fluid in minutes, it preserves a spotless, oil-free workspace. Its ingeniously designed pour spout ensures mess-free fluid disposal.

Features:

  • Stability First: Equipped with a flip-out foot for steady usage, delivering precise extraction.
  • Organized Efficiency: Integrated hose storage streamlines your extraction process.
  • Perfectly Sized: A 41" main tube (3/8" OD) and two 35" extension tubes (1/4" and 3/16" OD) ensure versatility across applications.
  • Beyond Extraction: It doubles as a brake bleeder with the optional ES3248036 Brake Bleeder Hose.
  • LIFETIME REPLACEMENT: Like almost all Schwaben tools, this fluid extractor is backed by our lifetime replacement program should anything go wrong!


ADAPTER:

This adapter hose allows a quick and easy suction thru the bleeder screw. This hose has included shut off valve in hose.  This will improve your extractor capabilities and make it even more of an all-in-one tool!


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Bosch - Corporate Logo
T#:348179
Part#: 12131712219T8KT
In Stock
$ 247.99 USD
Free Shipping
$ 247.99 USD
Free Shipping


THINKCAR - Corporate Logo
T#:24444450
Part#: 3.03.06.0001
Ships in 1 Business Day
$ 129.00 USD
Free Shipping
$ 129.00 USD
Free Shipping

Searching for a comprehensive battery diagnostic tool? Your solution is the THINKCAR Car Battery Starter and Alternator Analyzer. This state-of-the-art digital device is designed to provide accurate and reliable diagnostic information, offering a clear understanding of your battery's condition and overall electrical system performance. With advanced technology and a user-friendly interface, the THINKCAR Battery Analyzer is essential for all vehicle owners, whether you're a car enthusiast or a professional mechanic. With this versatile device, easily diagnose battery issues, assess starter and alternator performance, and perform thorough load tests—all from the convenience of your garage.


Features:

  • Screen Size: 2.8' inches
  • Supports: ISO9141, CAN FD OBD2 Protocol
  • Read and Erase DTC Codes
  • Live Data
  • Working Voltage: 9V-18V
  • Battery Capacity: 12000 mAh
  • Starting Current: 400A
  • Peak Current: 1000A
  • Works with Diesel Vehicles up to : 2.4 L
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