What Does “FJ” Stand for in Toyota FJ?

The “FJ” designation in Toyota vehicles refers to a specific engine and chassis combination. It originates from the legendary Toyota Land Cruiser series and continues in model names like the FJ40 and FJ Cruiser.

Meaning of “FJ”

“F” refers to the engine series

• The original Toyota F engine was a 3.9L inline-6 used in early Land Cruisers

“J” stands for “Jeep” or “Jeep-type vehicle”

• Toyota used the letter “J” internally to categorize its rugged, 4×4 utility vehicles

Together, “FJ” was used to designate vehicles powered by the F-series engine on a Jeep-style platform. It first appeared in the FJ40, the classic Land Cruiser introduced in the 1960s.

Continued Use in FJ Cruiser

The FJ Cruiser, introduced in 2006, revived the “FJ” name as a tribute to the FJ40. While it used a modern 4.0L V6 engine (not an F-series engine), the name honored the vehicle’s heritage and design roots.