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
 

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.

Introducing the Turner Motorsport Bavarian Autosport Idle Control Valve for BMW M50, M52, and M54 engines. This crucial component, situated in the intake system, addresses common idle issues experienced by BMW owners. Enhance your BMW's performance and ensure smooth idling with this Idle Control Valve.

• Turner Motorsport's Bavarian Autosport Idle Control Valve for M50, M52, M54 engines.
• Targets and resolves common idle issues.
• Promotes smooth and consistent idling.
• Essential for maintaining optimal engine performance.
• Reliable component for BMW enthusiasts.

Upgrade your BMW's idle control system with the Turner Motorsport Bavarian Autosport Idle Control Valve, ensuring a seamless driving experience.

Suction Pump is a crucial component for maintaining optimal vacuum pressure within the engine and brake systems of BMW models. This high-performance part ensures proper vacuum regulation, enhancing overall engine efficiency and brake function. Designed to meet or exceed OEM standards, the Suction Pump provides a precise fit and dependable performance for long-term durability. Available through Turner Motorsport, this pump is an ideal replacement part for BMW owners looking to restore the reliability and performance of their vehicle.

• Designed specifically for BMW models to ensure a perfect fit
• Maintains proper vacuum pressure for engine and brake system efficiency
• Improves overall vehicle performance and brake response
• Manufactured from durable, high-quality materials for long-lasting use
• Direct-fit replacement for easy installation
• Meets or exceeds OEM specifications for reliable performance

K&N Aerosol Air Filter Cleaning Kit provides a simple and effective solution to preserve and maintain your K&N air filter, ensuring it delivers optimal performance for a lifetime. This cleaning kit is specifically designed to clean and restore the airflow efficiency of your reusable air filter, saving you money by eliminating the need to purchase replacement filters.

The K&N Aerosol Air Filter Cleaning Kit includes a powerful degreaser that effectively removes dirt, grime, and contaminants from your air filter. Once cleaned, the kit’s specialized oil is used to recoat the filter, ensuring it continues to trap harmful particles while allowing maximum airflow.

Regular maintenance with this kit not only extends the life of your air filter but also enhances your engine’s performance by maintaining high air flow and exceptional filtration. Easy to use, the K&N Aerosol Air Filter Cleaning Kit is an essential tool for keeping your air filter in top condition.

• Lifetime filter maintenance: Extends the lifespan of your K&N air filter, eliminating the need for replacements.
• Improved engine performance: Restores airflow efficiency for optimal engine operation.
• Cost-effective solution: Saves money by allowing you to maintain your existing air filter.
• Easy application: Simple-to-use aerosol spray for cleaning and re-oiling.

The TMS E36/Z3 6cyl Intake Tube Plug is intended to be used in a variety of applications ranging from ASC delete, deleting the idle control valve in a car with a aftermarket engine management system, re-routing the PCV hose to a catch can, aftermarket supercharged engines, or simply plugging one of the hose provisions in the E36 6cyl intake tubes. It also works great as a coolant hose plug. The diameter of the tip is 20mm (just over 3/4"). A low profile Oetker compression clamp is included. The plug can be drilled and tapped for a small air temp/water temp sensor, pre throttle body vacuum/boost/MAP sensor barb, or water alcohol/nitrous/methanol injector or barb. Works with M50, M50TU S52, M52, S52 throttle boots and may work in other applications with a 20mm hose.

Installation Instructions / More Details

This intake tube plug can be used in a variety of ways on these BMWs:
1992-1995 E36 325i, 325is, 325ic
1996-1998 E36 328i, 328is, 328ic
1999-1999 E36 328is, 328ic
1995-1999 E36 M3 coupe, sedan & convertible
1997-1999 Z3 2.8 liter
1992-1995 M50 engine (2.5 liter)
1996-1999 M52 engine (2.8 liter)
1995-1995 S50 engine (3.0 liter / US engine)
1996-1999 S52 engine (3.2 liter / US engine)

Boost airflow and unleash a deeper induction sound to rekindle the excitement of driving your BMW E39 525i.

The Luft-Technik Intake System from ECS Tuning is purpose-built for M52TU and M54-powered 525i / 528I models, offering a performance upgrade that overcomes the restrictive factory airbox while maintaining a precise, factory-like fit. ECS Tuning engineered this system around the unique mounting geometry of the E39 chassis, ensuring an effortless bolt-on installation that integrates seamlessly with OEM components.

This performance intake features a high-flow conical air filter housed in a powder-coated aluminum heat shield, designed to seal against the hood and make full use of the factory inlet ducting. By drawing in cooler outside air, the system helps reduce intake temperatures for denser combustion and improved efficiency. A reinforced silicone intake elbow and a precision-engineered MAF housing keep the stock sensor in its proper location while smoothing airflow and reducing turbulence.

The results are immediately noticeable: quicker throttle response, a throatier intake growl, and a cleaner, performance-focused look under the hood. Built with premium materials such as stainless-steel hardware and heat-resistant silicone, ECS Tuning’s Luft-Technik Intake delivers both durability and long-term performance.

For BMW E39 525i / 528I drivers who want OE-level fitment with the benefits of sharper response, enhanced induction noise, and improved airflow, the Luft-Technik Intake by ECS Tuning is a must-have upgrade.

Key features:

21% increase in flow over the stock intake
Seals to the hood for the largest and coldest air space.
Unrestricted air flow for maximum induction noise.
The heat shield is designed to fit the E39 chassis perfectly, utilizing factory mounting locations, and creates a colder air pocket where the factory inlet duct is.
5052 powder-coated aluminum heatshield, stiff, corrosion-resistant, and finished for a long life in the swap environment.
The black silicone intake elbow and coupler is a compliant, high-temperature silicone that grips clamps and resists blow-off during repeated fitment and heat cycles.
Retains factory MAF
Stainless-steel hardware for longevity and corrosion resistance.
Fitment & compatibility:

Specifically engineered to work with utilizing that maximum air space and retaining the OEM cold air inlet. Mounts to the factory frame rail, no modification required.

Tailored to the M54B25 found in the 5-series chassis.

Kit Contents:

Heat Shield
Silicone Throttle Body Boot
MAF Mount
Silicone MAF Coupler
Inlet/Air Filter Adapter
Hi-flow ECS Conical Air Filter
E39 Specific Heat Shield Mount
Hardware for installation
Product Development: The Luft-Technik Intake System was designed, engineered, tested, and quality inspected by ECS Tuning's Research and Development team. Their process incorporates industry-leading tools and methods, including FARO laser scanning for reverse engineering and quality assurance, SolidWorks 3D CAD modeling, in-house 3D printing for rapid prototyping, and rigorous long-term product testing. Performance data is validated using both a Mustang AWD 500 SE in-ground dyno and a Superflow SF-750 Flowbench to ensure precision and reliability.

Installation and support: - Click HERE for Installation Instructions -