High-Temp 4-Ply Silicone Hose Couplers & T-Bolt Clamps

High-Temp 4-Ply Silicone Hose Couplers with Stainless T-Bolt Clamps Don't let a blown-out coupler end your track day. ProFlow Exhaust High-Temp 4-Ply Silicone Hose Couplers are engineered for high-performance forced induction and heavy-duty intake systems. Featuring a reinforced multi-layer design and a striking red interior, these couplers provide the perfect balance of flexibility and extreme pressure resistance. Each coupler comes complete with two heavy-duty stainless steel T-bolt clamps, ensuring a professional, leak-free seal that standard worm-gear clamps simply can't match. Performance Specifications Reinforced 4-Ply Construction: Built with four layers of high-grade silicone and heat-resistant embedded fibers to prevent expansion and "ballooning" under high boost. Dual-Tone Aesthetics: Classic black exterior for a clean engine bay look with a high-visibility red interior for added durability. Extreme Temperature Range: Rated for temperatures ranging from -65°F to +350°F, making them ideal for turbocharger outlets, intercooler piping, and cold air intakes. Heavy-Duty T-Bolt Clamps: Includes two 100% stainless steel T-bolt clamps for superior clamping force and a professional finished look. Why Upgrade to 4-Ply Silicone? Standard rubber hoses dry out, crack, and fail over time—especially when exposed to engine heat and oil vapor. Our silicone couplers are: Pressure Rated: Designed to handle high-boost applications without leaking. Vibration Dampening: Absorbs engine movement to prevent stress on your aluminum intake or intercooler piping. Chemical Resistant: Resists degradation from coolant, oil, and ozone for a longer service life. Available Sizes We offer precision fitment for a variety of builds: 2" (51mm) 2.5" (63mm) 3" (76mm) 4" (102mm)