The 3UZ-FE is the largest member of Toyota's celebrated UZ V8 family, the engine line that built Lexus's reputation for overbuilt reliability. In the GS430 it displaces 4.3 liters from an aluminum block with aluminum heads, breathing through 32 valves and four cams with VVT-i variable valve timing on the intake side. A forged steel crankshaft, a timing belt with hydraulic tensioner, and electronic throttle control round out the package. Rated at roughly 290 horsepower and 320 lb ft, it moves the GS430 with the effortless, near silent shove that made these cars famous, and well maintained examples routinely pass 200,000 miles.
Even a 3UZ-FE eventually meets the realities of age: a spun bearing from deferred oil changes, overheating damage from a neglected radiator or water pump, sludge from extended intervals, or simply a high mileage engine consuming oil past the point of economy. Because the GS430 is now a 20 plus year old car, a complete used donor engine is almost always the rational fix, far cheaper than a rebuild and faster than parting out a tired unit. Swappers also seek the 3UZ for projects, since it shares the UZ family's legendary bottom end strength.
| Detail | Description |
|---|---|
| INCLUDED | Long block assembly: block, crankshaft, pistons, rods, heads, cams, and valve train as removed from the donor. |
| NOT INCLUDED | Intake manifold and accessories where not present, alternator, starter, A/C compressor, power steering pump, exhaust manifolds, engine harness, and ECU. We confirm exactly what is on the unit before you pay. |
| Tools You Need | Engine hoist, standard metric tools, torque wrench, fluids, and a new timing belt kit recommended at installation. |
The 3UZ-FE was fitted to three Lexus models:
| Detail | Description |
|---|---|
| Lexus GS430 | 2001 to 2005 (S160) and 2006 to 2007 (S190), this donor is from a 2001 |
| Lexus LS430 | 2001 to 2006, same 3UZ-FE with model specific mounts and accessories, confirmed by part number |
| Lexus SC430 | 2002 to 2010, same engine family, confirmed by part number |
| Toyota Soarer / Celsior (import) | JDM equivalents, swap projects confirmed by part number |
Within the GS430, the long block carries across years while accessories and harnesses vary. Give us your VIN and we confirm the exact transfer list before shipping.
Not sure this engine matches your car or project? Call (240) 301-0095 with your VIN and your plan, stock replacement or swap. We confirm donor compatibility, what transfers from your old engine, and what you should replace during installation before the order ships.
This is a used OEM engine, inspected before shipping:
| Engine Code | 3UZ-FE |
|---|---|
| Displacement | 4.3L (4,292 cc) V8, aluminum block and heads |
| Compression Ratio | 10.5:1 |
| Fuel System | Sequential electronic fuel injection |
| Max Horsepower | ~290 hp @ 5,600 RPM |
| Max Torque | ~320 lb-ft @ 3,400 RPM |
| Redline | ~6,200 RPM |
| Valvetrain | DOHC, 32 valve, VVT-i (intake) |
| Donor Application | 2001 Lexus GS430 |
| Sku | vaz625 |
| Price | $2,249.00 |
To file a claim, contact us within 15 days of delivery at (240) 301-0095 or support@vazautosolutions.com.
