Flexfab 7766 Convoluted Reducer, 4.00" ID Silicone Orange Charge Air Hose, 6.30" OAL

Seal your turbocharger and charge-air-cooler plumbing with the Flexfab 7766 Convoluted Reducer — a orange silicone connector built for the heat and boost pressure of diesel charge-air systems. Engineered to withstand hostile engine environments, it resists the cracking and blow-off that plague lesser connectors.

Why this Flexfab charge air connector

• 4-ply silicone-coated meta-aramid construction — high pressure and heat resistance for hot or cold side of the CAC system.
• Rated to +500°F (from −65°F) — handles post-turbo intake heat without hardening or failing.
• Stainless steel pressure retention rings where noted — engineered for a secure, blow-off-resistant connection.
• 4.00" ID × 6.30" overall length — sized to fit standard charge-air piping. Reducing design steps between two pipe sizes.
• Oil-splash, ozone, and UV resistant — long service life under the hood.

Ideal for diesel truck engines delivering pressurized intake air to the intercooler and intake manifold. Pair with appropriate T-bolt clamps for a secure seal.

Backed by hpcouplers’ fast shipping and easy returns — order with confidence from a trusted industrial hose and coupler supplier.

• FlexFab Part: 7766
• Type: Convoluted Reducer
• Inside Diameter (ID): 4.00"
• Overall Length: 6.30"
• Wall Thickness: .092"/.132"
• CAC Side: hot or cold side
• Extreme temp range: -65F to +500F
• Construction: Orange 4-ply silicone-coated meta-aramid fabric, stainless steel pressure retention rings where noted