3UZ-FE VVTI 3UZ-FE

3UZ-FE VVTI 3UZ-FE

The **3UZ-FE** is a **4.3L V8 engine** from Toyota’s **UZ family**, featuring **VVT-i (Variable Valve Timing – intelligent)** for improved efficiency and performance. It was used in **luxury models** like the **Lexus LS 430, GS 430, and Toyota Crown Majesta**.

### Key Specs:
– **Displacement:** 4.3L (4,292 cc)
– **Power Output:** **256-507 hp**, depending on the model
– **Torque:** **260-325 lb-ft**
– **Fuel System:** **Multi-point fuel injection**
– **Cooling System:** **Water-cooled**
– **Technology:** **ACIS (Acoustic Control Induction System)** for variable intake geometry

### Reliability & Issues:
– **Durability:** Known for **strong internals**, including **forged steel crankshaft** and **lightweight aluminum pistons**.
– **Common Problems:** Some owners report **oil consumption** and **timing belt maintenance** concerns.

This engine was **discontinued in 2010**, replaced by the **Toyota UR engine family**. Are you looking for tuning options or a replacement? Let me know how I can help!