Cooling System Heater outlet hose(Heater to wp) NB PreviousHeater inlet hose (Head to heater) NB NextBy pass idle control#1 NB8 (Thermostat nect to throttle body) Heater outlet hose(Heater to wp) NB Heater outlet hose(Heater to wp) NB $29.10 Genuine Mazda MX5 - New Part-one Heater outlet hose(Heater to wp) Quantity: Add To Cart Facebook0 Twitter Pinterest0 You may want to see this... By pass w/p inlet ( thermostat neck to w/p inlet) NB8 facelift 01-04 $46.29 Radiator and Heater Hose Kit for MX5 from $165.31 By pass idle control#3 NB8 (Oil filter to rear of head) $25.13 By pass idle control#2 NB8 (Throttle body to intake(bottom)) $21.16 By pass idle control#1 NB8 (Thermostat nect to throttle body) $18.52