The 3.3L VIN A 3MZFE engine for 4WD models is designed to provide reliable power and smooth operation in various terrains. Its naturally aspirated setup ensures steady power, essential for 4WD performance. With electronic multi-point fuel injection, it optimizes fuel use while supporting robust output. The V6 3MZFE construction is durable, ideal for demanding conditions. The DOHC timing is set to deliver balanced power, making it a reliable choice for those in search of a quality used engine for 4WD vehicles.