This hose kit will fit the mk2.5 apart from the thermostat bypass hose which is a smaller bore on the mk2 than the mk2.5. Hose, thermostat by-pass, MX-5 mk1 & mk2, B61P15261A (will not fit mk2.5). New red silicone coolant hose set (8 hoses), Mazda MX5 1.6 & 1.8 mk2 1998-2000.
eBay