It was used primarily in SUVs because of its large displacement, smoothness, ruggedness and torque.

The only significant difference between the two was the inclusion of electronic fuel injection on the 1FZ-FE, whereas the 1FZ-F used a carburetor.

Starting in 1998, the fuel injected version (1FZ-FE) was updated in certain non-US markets.

This version of the engine received many updates over the previous version such as a redesigned head, more compact pistons, updated throttle body, an improved intake manifold with longer intake runners, 4 nozzle fuel injectors to improve fuel atomization and direct ignition (via a wasted spark set-up with three dual outlet coils); the engine pictured here is that variant discernible by the intake manifold and lack of distributor.

[citation needed] Also, a de-rated LPG version was built for the 7FG/7FZ series forklifts.