What engine is in a FJ40 Land Cruiser?
The FJ40 typically runs an inline-six gasoline engine, with two common configurations over its production run: an early 3.9-liter unit and a later 4.0-liter inline-six known as the 2F. Diesel variants exist in some export markets but are uncommon in most North American examples.
The engine lineup across the FJ40 era
The FJ40’s powerplants were mainly from Toyota’s inline-six family. The most prevalent setups were a 3.9-liter petrol engine used in the earlier models and a 4.0-liter inline-six (the 2F) that became standard in later production. In certain markets, diesel-powered FJ40s were also produced, though they are relatively rare in the global supply of FJ40s.
Gasoline engines
Two main gasoline engines powered most FJ40s over its long production run. The following outlines their basics:
- 3.9-liter inline-six (commonly referred to as the 3.9 L F-series) — used in early FJ40s, typically carbureted.
- 4.0-liter inline-six (the 2F engine) — introduced later and widely installed in mid- to late-production FJ40s; more torque and easier maintenance in many markets.
For collectors and restorers, the engine code and year are strong clues about authenticity, parts compatibility, and historical accuracy.
Diesel and other market variants
Diesel-powered FJ40s appeared in select export markets, often built by Toyota's diesel divisions or converted locally. These variants are far less common in North America and can complicate parts sourcing and documentation.
How to identify your FJ40 engine
To verify the exact engine in a given FJ40, check a combination of factory tags, VIN, engine stamping, and service history. Here are practical steps:
- Look for the engine code stamped on the engine block near the bell housing or valve cover, and compare it to Toyota documentation for FJ40 production years.
- Examine the VIN plate or regional documents to confirm the original engine matched to the vehicle's year and market.
- Check the carburetor or fuel system layout and displacement markings to distinguish 3.9 L from 4.0 L engines.
Verifying the engine helps identify maintenance needs and ensures you’re sourcing the correct parts for restoration or repair.
Summary
The FJ40’s most common powerplants are Toyota inline-six petrol engines: a 3.9-liter early engine and a 4.0-liter 2F engine. Diesel options exist in some export markets but are relatively rare. Knowing which engine your FJ40 has is essential for maintenance, restoration, and valuation.
