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Lexus 2UR-FSE specs: 5.0L (303 ci) 8-cylinder, 94 x 89.5 mm (3.7008 x 3.5236 in) bore and stroke, 11.8:1 compression. Rated 438 hp, 2008–2016.
The Lexus 2UR-FSE is oversquare — the 3.7008" bore exceeds the 3.5236" stroke by 5.0% — a layout that favors airflow and RPM over leverage at the crank. The 3.5236" stroke puts mean piston speed at 4,000 ft/min around 6,800 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 37.9 ci (621 cc).
11.8:1 on aluminum heads is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.
It is one of 13 engines in the UR family, sitting between the 281 ci and 346 ci members. 9 factory variants share these dimensions, rated at 438 hp across 2008–2016.
| Displacement | 303 ci / 5 L |
|---|---|
| Bore | 3.7008" |
| Stroke | 3.5236" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 11.8:1 |
| Bore/stroke ratio | 1.05 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 438 hp |
| Years | 2008–2016 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2008 | 2UR-FSE net | 438 | — | — |
| 2009 | 2UR-FSE net | 438 | — | — |
| 2010 | 2UR-FSE net | 438 | — | — |
| 2011 | 2UR-FSE net | 438 | — | — |
| 2012 | 2UR-FSE net | 438 | — | — |
| 2013 | 2UR-FSE net | 438 | — | — |
| 2014 | 2UR-FSE net | 438 | — | — |
| 2015 | 2UR-FSE net | 438 | — | — |
| 2016 | 2UR-FSE net | 438 | — | — |
Factory specification sheet.
| Bore/stroke character | 1.050 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,524 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 37.9 ci |
| Static compression | 11.8:1 — high enough that pump premium or better is normally required |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2008 | 438 hp | 2UR-FSE |
| 2009 | 438 hp | 2UR-FSE |
| 2010 | 438 hp | 2UR-FSE |
| 2011 | 438 hp | 2UR-FSE |
| 2012 | 438 hp | 2UR-FSE |
| 2013 | 438 hp | 2UR-FSE |
| 2014 | 438 hp | 2UR-FSE |
| 2015 | 438 hp | 2UR-FSE |
| 2016 | 438 hp | 2UR-FSE |
1 factory vehicle, 2008–2016. Each year opens that model's engine table.