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
 

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

ECS Tuning Silicone Turbo Inlet Hose – MINI Cooper S/JCW N14 (R55-R59)

Upgrade your MINI Cooper N14 with our high-flow silicone turbo inlet hose, featuring increased internal volume for greater airflow, a smooth interior finish for an uninterrupted flow path, and more available air for your turbo to consume, resulting in enhanced performance and throttle response.

Unlike the factory plastic inlet hose, which degrades over time and was never engineered with performance in mind, the ECS Tuning replacement features a durable, 4-ply silicone construction with wire reinforcement to handle higher temperatures and boost levels. Reinforced sections help prevent flex and collapse under load, and a smooth internal profile with a counterbored outlet reduces turbulence for optimized airflow to the turbocharger.

ECS Tuning also addresses a known issue where the OEM hose can walk off the turbo inlet and ingest the included gasket, often leading to premature turbo failure. This upgraded design provides a much more secure fit and peace of mind for performance-minded MINI owners.

Product Features

Constructed from heavy-duty, 4-ply fiberglass-reinforced silicone

Designed to resist collapse, distortion, and degradation from heat, oil, and fuel exposure

Smooth interior walls and gradual taper ensure unimpeded, efficient airflow

Includes spacers/adapters to accommodate factory or common upgraded turbo sizes

Gloss black finish adds a clean, high-performance appearance to the engine bay

Stainless steel smooth-band hose clamps are included for secure installation

Engineered to handle continuous operating temperatures up to 250°F

Direct replacement for the OE turbo inlet hose—no tuning required

Kit Includes

(1) Silicone turbo inlet hose
(2) Silicone turbo inlet rings for size adaptation
(3) Smooth-band stainless steel hose clamps
Engineering and Development
Designed, tested, and quality-inspected at ECS Tuning’s in-house R&D facility in Wadsworth, Ohio. Utilizing precision tools like FARO laser scanning, SolidWorks 3D CAD modeling, and in-house rapid prototyping, ECS ensures perfect fitment and long-term durability.

Installation Notes
Installation is simple and fully reversible. Remove the stock inlet hose and install the ECS silicone hose using the included clamps and spacers as needed. No permanent modifications required.

Not legal for sale or use in California on any pollution-controlled motor vehicle in accordance with the California Air Resources Board (CARB).

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

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

Enhance the performance of your Mini with the MINI F-Chassis GP3/JCW 300HP Intake Pipe Upgrade - Rear Section B48E. This rear section intake pipe upgrade is specifically designed for Mini F-Chassis models equipped with the JCW 300HP engine. Improve airflow and increase power output with this high-quality intake pipe upgrade for your Mini.

• Specifically designed for Mini F-Chassis models with the JCW 300HP engine
• Improves airflow for enhanced engine performance
• Increases power output for a more exhilarating driving experience
• High-quality construction ensures durability and reliability