Flexfab 7701-350, 3.50" ID x 3 ft Fiberglass Reinforced Turbo Sleeve, 89mm 500F Turbo Charge Air

Connect your turbocharger to the engine with the Flexfab 7701-350 fiberglass reinforced turbo sleeve — a 3.50" ID silicone sleeve engineered for the extreme heat of charge-air and exhaust-side service. It resists chemicals, steam, coolants, ozone, and aging that destroy ordinary hose.

Why this Flexfab turbo sleeve

• 3-ply silicone-coated fiberglass construction — extreme temperature resistance for hostile engine environments.
• −65°F to +500°F range — handles post-turbo heat without hardening, cracking, or failing.
• 60 PSI burst / 20 PSI max operating — a solid margin for boost-side use.
• Resists chemicals, steam, coolants, ozone & UV — long service life under the hood.
• 3.50" (89mm) ID, .080"/.110" wall, 3 feet length — sized for turbo plumbing.

Designed for connection between the turbocharger and engine where no vibration is present. 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 Series: 7701
• Part Number: 7701-350
• Inside Diameter (ID): 3.50" (89mm)
• Outside Diameter (OD): 3.69" (94mm)
• Actual Burst Pressure - PSI: 60
• Max Operating Pressure - PSI: 20
• Weight LB/FT: 1.0
• Matching Clamp: 2583-0350 or 2584-0412
• Hose Length: 3 feet
• Wall Thickness: .080"/.110"
• Extreme temp range: -65F to +500F
• Construction: Orange 3-ply silicone-coated fiberglass fabric reinforcement