【Perfect Fit for Mazda 5 2.3L】 Direct replacement for OE# LFB7-15-17YA,LFB71517YA， compatible with 2006-2010 Mazda 5 Sport/Touring/Grand Touring models. Verify your OEM number before purchase. 【Leak-Proof Sealed Cap Design】 Features upgraded double-seal ring & 15PSI pressure-tested cap (vs. generic single-seal), preventing coolant loss and engine overheating. 【Reinforced Nylon Construction】 Engineered with heat-resistant nylon (230°F)， 40% stronger than standard plastic for crack resistance. 【Complete Set, Easy Install】 Includes filler neck + OEM-spec cap. Bolt-on design with pre-aligned mounts – installs in 15 mins with basic hand tools. 【Reliability Guaranteed】 CNC-molded for exact OEM dimensions. Engine radiator filler neck with sealing cover for Mazda 5 2.3L 2006-2010 , radiator coolant filler neck water pipe,Leak-Proof Seal( OEM:LFB7-15-17YA)