ECS BMW Intake Parts for BMW 3 Series E46 (1999-2005)

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One thing drivers and cars have in common is the need for air. Induction systems provide a third of the critical necessities for engines to run, so giving your BMW the best way to breathe is paramount in engine performance. If you need to replace your filter, recharge your reusable pod filter, or upgrade your intake, turbos, or intercooler parts, everything can be found below. We have OEM replacements as well as aftermarket performance upgrades to keep your BMW pristine, powerful, and functioning at peak efficiency.

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ECS Aluminum Vacuum Hose F-Connector - M54
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T#:385229
Part#: 012178ECS01
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The F-connector is located on the air intake boot and provides a connection point for the vacuum lines that run to the brake booster and fuel pressure regulator. The factory connector is made of plastic and with heat and exposure to the elements the connector becomes brittle and potentially cracks. As a result, a vacuum leak occurs which can cause poor idling issues, evap fault codes, and poor performance. 

This aluminum version from ECS Tuning is impervious to these issues, and will easy outlast the rest of your plastic and rubber vacuum system components. 

This item fits the following BMWs: 
E39 525i 530i 

E46 325i 325xi 330i 330xi

Z3 2.5i 3.0i
 

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ECS Exact-Fit High Flow Air Filter - Dry M52 2.5L & 2.8L / S54 3.2L ...
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Part#: 012054LA08-DRY
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Enhance your BMW's performance with the Turner Motorsport Exact-Fit High Flow Dry Air Filter, replacing the factory air filter for optimal airflow. This reusable filter offers a higher flow than stock paper filters, instantly improving engine power and fuel economy across the power band. As a direct replacement for the OEM filter, it's a hassle-free performance modification that shows immediate results. Choose between oiled and dry filters based on your preference and maintenance preferences, with both options outperforming OE paper filters. The dry filter, in particular, requires minimal maintenance, making it a cost-effective and efficient choice.

  • Enhances engine performance and fuel economy
  • Higher flow than OEM paper filters
  • Reusable and washable for long-term use
  • Direct replacement for the OEM filter
  • Choose between oiled and dry filters based on maintenance preference
  • Dry filter requires minimal maintenance and no oiling
  • Cleaning needed only every 50,000 miles under normal highway driving conditions
  • Cost-effective alternative to regularly replacing paper filters

Be sure to check out the full line of filter cleaning supplies Turner Motorsport has to offer!

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ECS Exact-Fit High Flow Air Filter - Dry E46/E83 M54 2.5 & 3.0L Engin...
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T#:5082404
Part#: 012054LA10-DRY
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Upgrade your BMW's air filtration system with the Turner Motorsport Exact-Fit High Flow Dry Air Filter. This direct replacement for your factory air filter offers superior airflow, allowing your engine to breathe better and enhancing both power and fuel economy. Enjoy immediate performance gains with this reusable filter, which outperforms stock paper filters and requires minimal maintenance.

Key Benefits:

  • Improves engine breathing for better performance
  • Enhances power throughout the power band
  • Increases fuel economy
  • Reusable filter for long-term savings
  • Easy installation as a direct OEM replacement

Oiled versus Dry Filters:

Although both options will keep the air to your engine clean and improve airflow, there are a few differences to consider when choosing the best filter for you. Oiled filters do allow slightly better airflow than dry filters, however they require more maintenance. Oiled filters will likely get dirty faster, needing to be cleaned more regularly. When cleaning an oiled filter, it is necessary to oil them with filter oil afterwards. This filter will save you money by no longer needing to replace a paper filter.

Dry filters offer slightly lower airflow but are easier to maintain while still outperforming the OE paper filter. Dry filters can be washed with warm soapy water. There is no oiling necessary afterwards.

Both dry and oiled filters flow better than stock and can be reused.

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Universal High Flow Performance Air Filter - Dry (2.5" inlet) ...
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T#:47644942
Part#: 003675ECS03-02
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Universal High-Flow Air Filter

Give your engine the airflow it deserves with this reusable, high-performance air filter—perfect as a direct replacement for an ECS intake system or as the finishing touch for your custom intake project.
Dimensions: 4.5" Base OD • 6" Filter Height • 3.5" Top OD

Upgrade from your restrictive factory filter to an ECS Tuning High-Flow Dry Air Filter and let your engine breathe freely. Improved intake flow enhances power throughout the rev range while helping maintain efficient fuel economy.

Oiled vs. Dry Filters — Which Is Right for You?

Oiled Filters

Offer slightly higher airflow for maximum performance

Require more frequent cleaning

Must be re-oiled after each cleaning

Long-term reusable design saves money over disposable paper filters

Dry Filters

Provide excellent airflow with minimal maintenance

Easily cleaned with warm, soapy water—no oiling required

Still flow significantly better than OE paper filters

Fully reusable and cost-effective

Both versions deliver superior performance over stock filters while offering the long-term benefit of reusability. Choose the option that best fits your maintenance style and performance goals.

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Silicone Coupler - Straight 3" (76.20mm)
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T#:376702
Part#: 003402ECS01A-06
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Silicone Coupler - Straight 3" ID (76.20mm) x 3" L

No matter the project, ECS Tuning silicone couplers and elbows offer a high-quality, precision-engineered solution to your needs. Whether you're installing an intercooler, fabricating a custom intake system, or whatever else you can dream up, ECS Tuning has you covered.

  • High-quality silicone construction for durability
  • Precision-engineered design ensures a perfect fit
  • Versatile solution for various automotive projects
  • Enhances performance and reliability
  • Compatible with BMW and other vehicles
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Plastic Vacuum Tubing Kit - black - 8 Feet
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T#:360488
Part#: 5097T321-8FT-A
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Ensure optimal engine performance with the replacement of your vacuum system hoses. The vacuum system plays a crucial role in the engine's functionality, transforming it into an efficient pump that influences air-fuel mixture and combustion. Damaged vacuum hoses can lead to various performance issues, from rough idle to difficulties starting the engine. If you're experiencing these issues, it's time to upgrade to this plastic hose with a 2.3mm inner diameter. The hose is black, arrives in an 8-foot section, and can be easily cut to the desired size for a perfect fit.

Key Features:

  • Engine Optimization: Replacing old hoses ensures the vacuum system operates at peak performance.
  • 2.3mm Inner Diameter: Designed to meet specific engine requirements.
  • Black Color: Blends seamlessly with the engine components.
  • 8-Foot Section: Provides flexibility to cut the hose to the required length.
  • Easy Installation: Upgrade without hassle for improved engine efficiency.

Upgrade your vacuum system with this high-quality plastic hose, addressing performance issues and ensuring your engine runs smoothly.

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12.0" 3.75mm (5/32") ID Black Silicone Vacuum Hose
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T#:19825269
Part#: 2101
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Universal Throttle Body Coupler - 45 Degree 2.5" (63.50mm)
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T#:382969
Part#: 003402ECS03A-16
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Elevate your BMW project with ECS Tuning silicone couplers and elbows, providing a high-quality, precision-engineered solution for various applications. Whether you're installing an intercooler, fabricating a custom intake system, or pursuing other automotive projects, ECS Tuning delivers reliable performance and durability. Trust ECS Tuning to meet your needs and enhance your BMW project.

  • High-quality silicone couplers and elbows for BMW projects
  • Precision-engineered for reliability and performance
  • Versatile solution for intercooler installations, custom intake systems, and more
  • Ensures durability and longevity for your automotive projects
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46.5mm To 61.0mm Silicone Coupler - Each
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T#:28570863
Part#: 017623ECS08A
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For optimal performance, consider the 46.5mm To 61.0mm Silicone Coupler.

Engineered with durability and functionality in mind, this silicone coupler provides a reliable connection for various components in your vehicle's intake or cooling system. Its smooth interior surface promotes efficient airflow, while its flexible and reinforced construction ensures a secure fit and prevents leaks. Enjoy hassle-free installation and enhanced performance with this premium silicone coupler.

  • Durable silicone construction
  • Smooth interior surface for efficient airflow
  • Flexible and reinforced design prevents leaks
  • Secure fit for reliable performance
  • Hassle-free installation
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ECS Exact-Fit High Flow Air Filter - Oiled
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T#:5082383
Part#: 012054LA08-OIL
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E46 M54 2.5L Luft-Technik Intake System - Red Filter
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T#:19329472
Part#: 008694LA12RKT
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Free-flowing intake featuring a roaring induction noise and increased performance to replace your restrictive factory intake.

Upgrade your E46 driving experience by adding induction noise and increased air flow. Let your engine breath and listen to the sweet sweet intake sounds!

With the factory intake you are limited to a finite amount of air, this leaves your engine under-served and limits induction noise. When it comes to the recipe for upgrading your E46 there are a few ingredients that you must have, power and sound. While you can add an exhaust for a bit more power and sound, the biggest difference you can make is adding power and sound under your hood with a high-flow intake. The factory intake box is also referred to as a silencer specifically designed to lower the induction noise for a refined driving experience, this helped exponentially when selling the cars out of the show room circa early 2000's. We as enthusiasts are no longer interested in subdued intake noise and limited air-flow, we want pure induction noise, we want to hear the air being sucked into the engine as we push down on the accelerator.

Key benefits:

Flows on average 71 CFM more than the stock intake system, a ~27% increase in intake efficiency
Increased induction noise
Maintains factory air induction track
Maintains Stock MAF location, allowing user to switch back to the stock airbox and retain the ECS Silicone boot if desired
Design:

Durable, lightweight 6061 and 5052 aluminum intake tube and bracket design, finished in wrinkle black powder coat
Mounts to locations on chassis utilizing Stainless Steel M6 hardware
MAF mounts to intake using aluminum brackets sealed to intake system with OEM fitment
Maximizes available engine bay space to fit oiled ECS cotton gauze 7” filter
Silicone intake boot with improved flow characteristics replaces failure-prone facotry accordion intake boot with provisions for F-connector fitting and Idle Air Control (IAC) valve inlet

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E46 Luft-Technik Intake System - Black Filter - 323/328i
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T#:37183632
Part#: 039102LA01KT
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ECS High-Flow Intake for E46 – Unleash Performance and Induction Sound

Transform your E46 driving experience with the ECS High-Flow Intake, engineered for improved airflow, exhilarating induction noise, and a noticeable performance boost. Designed as a direct replacement for your restrictive factory intake, this system lets your engine breathe freely while delivering the aggressive intake sound every enthusiast craves.

Why Upgrade?
The factory intake system prioritizes refinement over performance, limiting airflow and muffling the intake noise for a subdued driving experience. The ECS intake changes the game by significantly increasing air intake efficiency and enhancing the auditory excitement under your hood. It’s a must-have for those seeking the perfect balance of power and sound.

Featured in Action:
Catch this intake in action on the ECS YouTube channel's "Chasing Down Track Times at Pitt Race!" episode, see and hear the difference for yourself.

Key Benefits:

Increased Airflow: Boosts intake efficiency by approximately 27%, flowing an average of 71 CFM more than the stock system.
Enhanced Induction Noise: Enjoy the raw, satisfying sound of air rushing into your engine.
Factory Compatibility: Maintains the stock air induction track and MAF location, allowing a seamless switch back to the factory airbox if needed.
Premium Design Features:

Constructed from durable, lightweight 6061 and 5052 aluminum with a wrinkle-black powder coat finish.
Includes a 7” oiled cotton gauze ECS filter for optimal filtration and airflow.
Silicone intake boot with improved flow replaces the failure-prone factory accordion boot, featuring provisions for F-connector and Idle Air Control (IAC) valve.
Stainless steel M6 hardware and aluminum brackets ensure a secure and reliable installation.
Complete Kit Contents:

Silicone inlet
Aluminum MAF flange
Mounting bracket
7” ECS filter (black)
Seals, clamps, and hardware for easy installation
Upgrade your E46 with the ECS High-Flow Intake for a driving experience filled with power, sound, and excitement. Breathe new life into your engine – order now!

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BMW & MINI Silicone Coupler - Straight 2.38" (60.33mm)
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T#:376708
Part#: 003402ECS01A-03
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Upgrade your BMW or MINI with the BMW & MINI Silicone Coupler - Straight 2.38" (60.33mm). This high-quality silicone coupler is designed to provide a secure and leak-free connection for your vehicle's intake or cooling system. Engineered for durability and flexibility, it ensures optimal performance under various conditions. With its straight design and precise dimensions, this silicone coupler offers easy installation and a perfect fit for your BMW or MINI.

  • Provides a secure and leak-free connection
  • Engineered for durability and flexibility
  • Straight design for easy installation
  • Perfect fit for BMW and MINI vehicles
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Silicone Coupler - Straight 3 5/8" (92mm)
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T#:377483
Part#: 003402ECS01A-07
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ECS Silicone Coupler

Upgrade your BMW with the ECS Silicone Coupler. This straight 3 5/8" ID (92mm) x 3" L coupler is designed to enhance your vehicle's performance and durability. Crafted from high-quality silicone, it ensures long-lasting reliability and superior performance.

  • Enhances vehicle performance
  • Durable construction for long-lasting reliability
  • Specifically designed for BMW vehicles
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E46 M54 3.0L Luft-Technik Intake System - Black Filter
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T#:19329469
Part#: 008694LA13BKT
Back Ordered
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Free-flowing intake featuring a roaring induction noise and increased performance to replace your restrictive factory intake.

Upgrade your E46 driving experience by adding induction noise and increased air flow. Let your engine breath and listen to the sweet sweet intake sounds!

With the factory intake you are limited to a finite amount of air, this leaves your engine under-served and limits induction noise. When it comes to the recipe for upgrading your E46 there are a few ingredients that you must have, power and sound. While you can add an exhaust for a bit more power and sound, the biggest difference you can make is adding power and sound under your hood with a high-flow intake. The factory intake box is also referred to as a silencer specifically designed to lower the induction noise for a refined driving experience, this helped exponentially when selling the cars out of the show room circa early 2000's. We as enthusiasts are no longer interested in subdued intake noise and limited air-flow, we want pure induction noise, we want to hear the air being sucked into the engine as we push down on the accelerator.

Key benefits:

Flows on average 71 CFM more than the stock intake system, a ~27% increase in intake efficiency
Increased induction noise
Maintains factory air induction track
Maintains Stock MAF location, allowing user to switch back to the stock airbox and retain the ECS Silicone boot if desired
Design:

Durable, lightweight 6061 and 5052 aluminum intake tube and bracket design, finished in wrinkle black powder coat
Mounts to locations on chassis utilizing Stainless Steel M6 hardware
MAF mounts to intake using aluminum brackets sealed to intake system with OEM fitment
Maximizes available engine bay space to fit oiled ECS cotton gauze 7” filter
Silicone intake boot with improved flow characteristics replaces failure-prone facotry accordion intake boot with provisions for F-connector fitting and Idle Air Control (IAC) valve inlet

Show More Show Less

E46 M54 3.0L Luft-Technik Intake System - Red Filter
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ECS - Corporate Logo
T#:19329470
Part#: 008694LA13RKT
Back Ordered
Sale - Save 20% $ 385.99

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$ 308.79 USD
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Sale - Save 20%
$ 385.99

This product was last offered at the strikethrough price on
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$ 308.79 USD
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Free-flowing intake featuring a roaring induction noise and increased performance to replace your restrictive factory intake.

Upgrade your E46 driving experience by adding induction noise and increased air flow. Let your engine breath and listen to the sweet sweet intake sounds!

With the factory intake you are limited to a finite amount of air, this leaves your engine under-served and limits induction noise. When it comes to the recipe for upgrading your E46 there are a few ingredients that you must have, power and sound. While you can add an exhaust for a bit more power and sound, the biggest difference you can make is adding power and sound under your hood with a high-flow intake. The factory intake box is also referred to as a silencer specifically designed to lower the induction noise for a refined driving experience, this helped exponentially when selling the cars out of the show room circa early 2000's. We as enthusiasts are no longer interested in subdued intake noise and limited air-flow, we want pure induction noise, we want to hear the air being sucked into the engine as we push down on the accelerator.

Key benefits:

Flows on average 71 CFM more than the stock intake system, a ~27% increase in intake efficiency
Increased induction noise
Maintains factory air induction track
Maintains Stock MAF location, allowing user to switch back to the stock airbox and retain the ECS Silicone boot if desired
Design:

Durable, lightweight 6061 and 5052 aluminum intake tube and bracket design, finished in wrinkle black powder coat
Mounts to locations on chassis utilizing Stainless Steel M6 hardware
MAF mounts to intake using aluminum brackets sealed to intake system with OEM fitment
Maximizes available engine bay space to fit oiled ECS cotton gauze 7” filter
Silicone intake boot with improved flow characteristics replaces failure-prone facotry accordion intake boot with provisions for F-connector fitting and Idle Air Control (IAC) valve inlet

Show More Show Less

E46 M54 2.5L Luft-Technik Intake System - Black Filter
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ECS - Corporate Logo
T#:19329471
Part#: 008694LA12BKT
In Stock
Sale - Save 15% $ 334.99

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

$ 284.74 USD
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Sale - Save 15%
$ 334.99

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

$ 284.74 USD
Free Shipping on orders $49 and up

Free-flowing intake featuring a roaring induction noise and increased performance to replace your restrictive factory intake.

Upgrade your E46 driving experience by adding induction noise and increased air flow. Let your engine breath and listen to the sweet sweet intake sounds!

With the factory intake you are limited to a finite amount of air, this leaves your engine under-served and limits induction noise. When it comes to the recipe for upgrading your E46 there are a few ingredients that you must have, power and sound. While you can add an exhaust for a bit more power and sound, the biggest difference you can make is adding power and sound under your hood with a high-flow intake. The factory intake box is also referred to as a silencer specifically designed to lower the induction noise for a refined driving experience, this helped exponentially when selling the cars out of the show room circa early 2000's. We as enthusiasts are no longer interested in subdued intake noise and limited air-flow, we want pure induction noise, we want to hear the air being sucked into the engine as we push down on the accelerator.

Key benefits:

Flows on average 71 CFM more than the stock intake system, a ~27% increase in intake efficiency
Increased induction noise
Maintains factory air induction track
Maintains Stock MAF location, allowing user to switch back to the stock airbox and retain the ECS Silicone boot if desired
Design:

Durable, lightweight 6061 and 5052 aluminum intake tube and bracket design, finished in wrinkle black powder coat
Mounts to locations on chassis utilizing Stainless Steel M6 hardware
MAF mounts to intake using aluminum brackets sealed to intake system with OEM fitment
Maximizes available engine bay space to fit oiled ECS cotton gauze 7” filter
Silicone intake boot with improved flow characteristics replaces failure-prone facotry accordion intake boot with provisions for F-connector fitting and Idle Air Control (IAC) valve inlet

Show More Show Less
E46 Luft-Technik Intake System - Red Filter - 323/328i
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ECS - Corporate Logo
T#:37183633
Part#: 039102LA01RKT
In Stock
Sale - Save 15% $ 333.99

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

$ 283.89 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 333.99

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

$ 283.89 USD
Free Shipping on orders $49 and up

ECS High-Flow Intake for E46 – Unleash Performance and Induction Sound

Transform your E46 driving experience with the ECS High-Flow Intake, engineered for improved airflow, exhilarating induction noise, and a noticeable performance boost. Designed as a direct replacement for your restrictive factory intake, this system lets your engine breathe freely while delivering the aggressive intake sound every enthusiast craves.

Why Upgrade?
The factory intake system prioritizes refinement over performance, limiting airflow and muffling the intake noise for a subdued driving experience. The ECS intake changes the game by significantly increasing air intake efficiency and enhancing the auditory excitement under your hood. It’s a must-have for those seeking the perfect balance of power and sound.

Featured in Action:
Catch this intake in action on the ECS YouTube channel's "Chasing Down Track Times at Pitt Race!" episode, see and hear the difference for yourself.

Key Benefits:

Increased Airflow: Boosts intake efficiency by approximately 27%, flowing an average of 71 CFM more than the stock system.
Enhanced Induction Noise: Enjoy the raw, satisfying sound of air rushing into your engine.
Factory Compatibility: Maintains the stock air induction track and MAF location, allowing a seamless switch back to the factory airbox if needed.
Premium Design Features:

Constructed from durable, lightweight 6061 and 5052 aluminum with a wrinkle-black powder coat finish.
Includes a 7” oiled cotton gauze ECS filter for optimal filtration and airflow.
Silicone intake boot with improved flow replaces the failure-prone factory accordion boot, featuring provisions for F-connector and Idle Air Control (IAC) valve.
Stainless steel M6 hardware and aluminum brackets ensure a secure and reliable installation.
Complete Kit Contents:

Silicone inlet
Aluminum MAF flange
Mounting bracket
7” ECS filter (red)
Seals, clamps, and hardware for easy installation
Upgrade your E46 with the ECS High-Flow Intake for a driving experience filled with power, sound, and excitement. Breathe new life into your engine – order now!

Show More Show Less

3" To 2.5" Silicone Coupler 3" Length
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ECS - Corporate Logo
T#:363896
Part#: 003402ECS04A-02
Ships on Sep 8, 2026
Sale - Save 10% $ 9.99

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$ 9.99

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

$ 8.99 USD
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3" To 2.5" Silicone Coupler 3" Length

Enhance the performance and durability of your BMW or MINI with the 3" To 2.5" Silicone Coupler 3" Length. This silicone coupler provides a reliable connection between components, ensuring optimal airflow and reducing the risk of leaks. Engineered for durability and heat resistance, it withstands high temperatures and harsh conditions. Upgrade your BMW or MINI with this premium silicone coupler for improved performance.

  • Reliable connection for optimal airflow
  • Reduces the risk of leaks for enhanced performance
  • Engineered for durability and heat resistance
  • Fits both BMW and MINI models
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