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

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

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

BMW’s turbocharged B48 and B58 engines use a water-to-air charge air cooling system, with a front-mounted heat exchanger responsible for heat dissipation. Unfortunately, the factory single-row, 25mm core design is quick to heat soak under high load, leading to excessive intake air temperatures and potential limp mode conditions—especially on modified or track-driven cars.

ECS Tuning’s High Performance Aluminum Heat Exchanger was developed in-house as a direct replacement and upgrade over the factory unit. Designed for durability and maximum cooling efficiency, this heat exchanger is a must-have for high-horsepower street builds, spirited canyon driving, and extended track sessions. Built from TIG-welded 6061-T6 aluminum, the ECS unit eliminates the factory plastic end tanks—one of the system’s most common failure points. Each heat exchanger features CNC-machined billet aluminum hose connections, mounting flanges, and brackets for perfect OE fitment and trouble-free installation.

To drastically improve thermal efficiency, the factory 25mm single-row core has been replaced with a dual-row, 42mm performance core, offering a 72% increase in thickness. This expanded design nearly doubles coolant volume, allowing for greater heat dissipation, reduced intake air temperatures, and more consistent power delivery.

Replaces OEM Part Numbers: 17118666811, 17115A54040

Features:

6061 aluminum construction eliminates plastic end tank failure Dual-row, 42mm performance core provides 72% greater core thickness for improved cooling efficiency OE core: single-row, 25mm | ECS core: dual-row, 42mm TIG-welded 6061-T6 aluminum end tanks for exceptional strength Polished end tanks deliver a clean, high-quality finish CNC-machined billet connectors and brackets ensure seamless OE-style fitment Direct bolt-on upgrade – no modifications required