The COBB Turbo Inlet Hose for the MAZDASPEED3 is designed to significantly improve airflow, responsiveness, and intake efficiency by replacing the restrictive factory plastic unit with a high-performance, heat-resistant alternative. Made from 4-ply steel-reinforced silicone, this inlet hose maintains structural integrity under extreme vacuum conditions and high engine bay temperatures, ensuring long-term durability and consistent performance.

Unlike inferior designs that feature abrupt diameter changes or neck-downs, the COBB inlet hose uses a true taper profile with a uniform internal liningdelivering smooth, unrestricted airflow from your intake to the turbo. This design reduces turbulence and pressure drop, directly improving throttle response and turbo spool.

The hose is reinforced with internal steel wire to prevent collapse under vacuum during wide-open throttle and high boost scenarios, while still allowing enough flexibility to handle engine movement. Installation is quick and hassle-free, requiring only basic hand tools and no permanent modifications. COBB includes all necessary hardware, including steel sleeves for seamless integration with the OEM intake and BPV.

Available in COBB Blue and Stealth Black, this hose doesnt just improve functionit enhances your engine bay aesthetics too.

Note: Tuning is required. Compatible Off The Shelf (OTS) maps are available from COBB.

50-State Legal
This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer’s application guide.
CARB Executive Order Number: D-660-86