Flexfab 7703-400, 4.00" ID x 3 ft Heavy Duty Fiberglass Turbo Sleeve, 102mm 500F Turbo Charge Air

Connect your turbocharger to the engine with the Flexfab 7703-400 heavy duty fiberglass turbo sleeve — a 4.00" 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

• 6-ply heavy-duty 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.
• Heavy-duty pressure handling — engineered for boost-side turbo service.
• Resists chemicals, steam, coolants, ozone & UV — long service life under the hood.
• 4.00" (102mm) ID, .140"/.183" 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: 7703
• Part Number: 7703-400
• Inside Diameter (ID): 4.00" (102mm)
• OD / Burst / Weight: see Flexfab datasheet (not published per-size for this series)
• Hose Length: 3 feet
• Wall Thickness: .140"/.183"
• Extreme temp range: -65F to +500F
• Construction: Orange 6-ply heavy-duty silicone-coated fiberglass fabric reinforcement