Proflow Silicone Reducer Hose 3.75" to 4" Straight - Black Air Intake Coupler (PFES201-375-400B

Premium Silicone Reducer Hose for High-Performance Applications

Upgrade your air intake system with the Proflow PFES201-375-400B silicone reducer hose. Engineered for Australian conditions and built to withstand extreme temperatures and pressure, this straight reducer coupler delivers reliable performance in demanding automotive environments.

Key Features:

• Superior Heat Resistance: Operates flawlessly from -60°C to 180°C
• High-Pressure Rating: 200 PSI burst pressure for maximum durability
• Premium Construction: 4-layer polyester reinforced 5mm silicone
• Precision Sizing: 3.75" to 4" straight reducer for seamless fitment
• Versatile Applications: Perfect for air intakes, turbo systems, intercoolers, and cooling applications
• Professional Grade: Black finish for a clean, stealthy engine bay appearance

Technical Specifications:

• Inlet: 3.75 inches (95mm)
• Outlet: 4.00 inches (102mm)
• Material: 4-layer polyester reinforced silicone
• Wall Thickness: 5mm
• Temperature Range: -60°C to 180°C
• Burst Pressure: 200 PSI
• Colour: Black

Whether you're building a custom intake manifold, upgrading your turbo setup, or fabricating a cooling system, this Proflow silicone reducer provides the flexibility and strength you need. The straight design ensures smooth airflow while the premium silicone construction resists heat soak, oil contamination, and degradation over time.

Perfect for: Performance builds, race cars, street machines, custom fabrication, turbo installations, and intercooler piping.