Home / Products by Vehicle Type / Mazda / Mazda 3 MPS / Dump Valves/ Blow off Valves Dump Valves/ Blow off Valves Sort By Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A 2 Products Sort Turbosmart BOV Dual Port. Subaru & Mazda £305.88 £254.90 (ex. VAT) Turbosmart BOV Flange Gasket for Mazda / Subaru £5.88 £4.90 (ex. VAT)