The 1.8L 2ZRFXE engine for Prius models with VIN FU and 5th digit VIN B is a robust used engine tailored for hybrid functionality. Its naturally aspirated design enhances fuel economy while providing reliable performance. The advanced fuel injection system is specifically designed to complement hybrid systems, ensuring optimal integration with electric motor components. With a durable inline 4-cylinder configuration and dual overhead camshaft (DOHC) setup, this engine is built to last. Its precision-tuned Atkinson cycle maximizes efficiency, making it a smart replacement choice for eco-friendly driving in Prius models.