Blue 3Ply Silicone 2.75"-3.00" Reducer Coupler Hose for Turbo/Intake/Intercooler Effective Diameter Range_3.93" - 4.25" (100mm-108mm) HPS 4-1/8" (105mm)

HPS 4-1/8" (105mm)

HPS 5/8" - 1-1/4" (16mm - 32mm)

Blow-Off valves use a combination of manifold pressure signal and spring force to detect when the throttle is closed

HPS 5/8" - 3/4" (16mm - 19mm)

making it much easier to install over a standard straight coupler

Blue 3Ply Silicone 2.75"-3.00" Reducer Coupler Hose for Turbo/Intake/Intercooler Effective Diameter Range_3.93" - 4.25" (100mm-108mm) HPS 4-1/8" (105mm)Our auto performance hose can be used with a variety of pipe sizes and bends. Whether you are looking for a transition reducer, straight, or angle hosed, we has the perfect silicone couplers for you. it will provide efficient heat reduction to increase pressure and tolerance, that you know they are durable and can withstand the toughest conditions. Our performance hose couplers will provide your engine with a one of a kind advantage in performance and