Vortech Superchargers Reducer 4.00" to 3.00" Straight Sleeve - Black 7S400-300
Black Straight Reducing Silicone Coupler for High-Boost Intake Plumbing
The :contentReference[oaicite:0]{index=0} Straight Reducer Silicone Sleeve (PN 7S400-300) is a precision-molded straight silicone reducing coupler engineered to connect large-diameter intake or charge piping to smaller tubing in supercharged and turbocharged systems. This reducer transitions from a 4.00-inch inside diameter to a 3.00-inch inside diameter, making it an ideal solution for custom fabrication, intercooler plumbing, and supercharger inlet or discharge connections.
Manufactured from reinforced, high-temperature silicone, this coupler is designed to handle the elevated heat and pressure demands of forced-induction applications while maintaining the flexibility needed to absorb engine movement and vibration.
Boost-Ready Silicone Construction
Unlike generic rubber connectors, Vortech silicone reducers 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 in both street-driven and race-focused 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 reducer design for smooth airflow transition
- Connects 4.00" tubing to 3.00" tubing
- Black finish for a clean, low-profile engine bay appearance
- Compatible with standard silicone hose clamps
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 7S400-300
- Coupler Type: Straight Reducing Silicone Sleeve
- Inside Diameter (Large End): 4.00"
- Inside Diameter (Small End): 3.00"
- 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 dialing in 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
