Which Toyota engine is compatible with the 4jx1 engine?

The 4JX1 engine, a 3.0-liter diesel engine often found in Isuzu vehicles, does not have a direct Toyota engine equivalent. However, if you're looking for a Toyota engine that can be compatible in terms of dimensions or performance, the Toyota 1KZ-TE (3.0-liter turbo diesel) might be considered due to its similar displacement and diesel characteristics, although modifications would likely be necessary for a proper fit. Always consult a specialist for compatibility and installation advice.