Lexus GS430 3UZ-FE 4.3L V8 petrol engine for sale.

Lexus GS430 3UZ-FE 4.3L V8 Petrol Engine

Highly reliable power plant designed, Used Engine For Sale

The Lexus GS430 3UZ-FE 4.3L V8 petrol engine is a refined and highly reliable powerplant designed to deliver smooth performance and  moreover long service life, and premium driving comfort.

Developed as part of Toyota’s renowned UZ engine family, the 3UZ-FE is widely respected for its balance of powering and also durability, and low maintenance requirements, making it a strong choice for replacement, restoration, or performance-oriented luxury builds.

This engine is well known for its quiet operation and consistent output, ideal for drivers seeking a dependable V8 without sacrificing refinement.

Originally introduced in the early 2000s, the 3UZ-FE was fitted to several Lexus flagship models, most notably the Lexus GS430 (S160 and S190 series), LS430 (XF30), SC430, and select Toyota Crown Majesta models. Its broad compatibility across Lexus luxury platforms makes it a popular option for direct replacements and engine swaps where reliability and OEM performance are priorities. Buyers looking for a proven petrol V8 with excellent parts availability will find the 3UZ-FE particularly attractive.

 Specifications, Common weaknesses and Maintenance.

In terms of specifications, the Lexus 3UZ-FE features a 4.3-liter all-aluminum V8 configuration, DOHC 32-valve layout, and VVT-i variable valve timing for improved efficiency and throttle response. It produces approximately 280–300 horsepower and 430–440 Nm of torque, depending on the model year and application.

The engine uses a timing belt, sequential fuel injection, and a high-strength forged crankshaft, contributing to its smooth power delivery and long-term reliability.

Common weaknesses of the 3UZ-FE are generally minor and furthermore also well documented. These include timing belt wear if service intervals are ignored, aging valve cover gasket leaks, and coil pack failures on higher-mileage units.

Regular maintenance is straightforward and affordable, with furthermore routine oil changes, timing belt replacement at recommended intervals, and cooling system upkeep ensuring the engine easily exceeds 300,000 km. With proper care, the Lexus 3UZ-FE remains one of the most dependable luxury V8 engines available on the used market today.