Iron-Block Durability: How Toyota's 22R-E Made Trucks Unkillable

Toyota's 22R-E engine, with its cast-iron block and traditional durability components ( forged-steel crank, single-cam aluminum head, timing chain ), powered the early Toyota Pickup and 4Runner and earned a reputation for reliability. Its ability to withstand heat, abuse, towing and long miles helped cement Toyota's image of indestructible trucks, with many examples reaching hundreds of thousands of miles.