What is a crate engine?

A crate engine refers to a complete engine assembly that is sold as a single unit, typically packaged in a crate for shipping. These engines are pre-assembled and often include various components such as the engine block, cylinder heads, and other necessary parts, making them ready to install into a vehicle.

The appeal of crate engines lies in their convenience for automotive enthusiasts and builders who want to swap out or upgrade their vehicle's powertrain without having to assemble all the individual components themselves. This option simplifies the installation process and often allows for an upgrade to more powerful or performance-oriented engine configurations. Crate engines are commonly used in custom builds, restoration projects, or when an existing engine fails and needs replacement.

Other options, while they define different aspects or types of engines, do not capture the full essence of what a crate engine is. For example, lightweight engines may refer to the physical weight characteristics but do not imply the complete nature of the assembly, and warranties, while they may be offered, are not defining characteristics of crate engines. Similarly, a remanufactured engine refers to an engine that has been rebuilt to meet certain specifications, which is a different concept than the new, complete assemblies commonly sold as crate engines.