Vortech Silicone Coupling 4.00" x 2.00" Straight Sleeve - Black 7S400-200
Black Straight Reducing Silicone Coupler for High-Boost Intake Plumbing
The :contentReference[oaicite:0]{index=0} Silicone Coupling (PN 7S400-200) is a precision-molded straight silicone reducing sleeve engineered to connect large-diameter tubing to smaller piping in supercharged and turbocharged intake or charge systems. This coupler transitions from a 4.00-inch inside diameter to a 2.00-inch inside diameter, making it an excellent solution for custom fabrication, intercooler plumbing, and supercharger inlet or discharge routing.
Manufactured from reinforced, high-temperature silicone, this coupling is built to withstand the heat and pressure demands of forced-induction applications while retaining the flexibility needed to absorb engine movement and vibration.
Boost-Ready Silicone Construction
Unlike standard rubber connectors, Vortech silicone couplers are purpose-built for boosted environments. The reinforced silicone construction resists expansion under pressure, helping maintain consistent airflow and reducing the risk of leaks or coupler failure under load.
The straight reducing design provides a smooth, controlled airflow transition between pipe sizes, supporting efficient airflow and long-term reliability for both street and race builds.
Common Applications
- Supercharger inlet and discharge piping
- Turbocharger charge pipe connections
- Intercooler plumbing transitions
- Custom intake and cold-side fabrication
Features
- Reinforced silicone construction for boosted applications
- Straight reducing sleeve for smooth airflow transition
- Connects large-diameter tubing to smaller intake piping
- Black finish for a clean, low-profile appearance
- Compatible with standard silicone hose clamps
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 7S400-200
- Coupler Type: Straight Reducing Silicone Sleeve
- Inside Diameter (Large End): 4.00"
- Inside Diameter (Small End): 2.00"
- Color: Black
- Material: Reinforced Silicone
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer with extensive experience supporting supercharger and turbocharger builds. Whether you're adapting large-diameter intake tubing or finalizing a custom charge-pipe setup, our team can help ensure you select the correct couplers and supporting hardware the first time.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

