Mishimoto 4-in 90 Degree Coupler

Mishimoto 4-inch 90° Silicone Coupler Upgrade intercooler and turbo piping connections with the Mishimoto 4-inch 90° silicone coupler. Built for high-performance applications, this coupler delivers reliable, leak-free joins for 4" (102mm) piping runs where a tight 90° turn is required. Key features: High-quality silicone: Multi-layer, reinforced construction resists heat, pressure, and oil for long service life. Precision fit: 4" ID for a secure seal on standard 4-inch intercooler, charge pipe, and intake plumbing. 90° elbow design: Smooth internal radius promotes airflow and reduces turbulence for improved performance. Multiple colors: Available in Mishimoto signature colors to match or accent your engine bay. Durable reinforcement: Embedded fiber plies resist expansion and provide consistent clamping surface. Ideal for turbo, supercharger, and custom plumbing projects, the Mishimoto 4" 90° coupler combines form and function to keep boost where it belongs. Easy to install and engineered for enthusiasts, it’s a practical upgrade for street, track, and show vehicles.