Product Overview The 1ZR-FE is a popular naturally aspirated gasoline engine from Toyota's ZR series. It is a 1598cc inline four-cylinder passenger car power platform optimized for daily commuting in compact vehicles. Built with a lightweight integrated all-aluminum cylinder block and cylinder head, replaceable metal gaskets, a four-bearing crankshaft and reinforced piston/connecting rod assembly, a chain-driven 16-valve DOHC valve train, and an electronic multi-point fuel