See other engines in this family
Toyota 1UR-FE specs: 4.6L (281.2 ci) 8-cylinder, 94 x 83 mm (3.7008 x 3.2677 in) bore and stroke. Rated 310 hp, 2010–2019. Used in the Toyota Tundra. DOHC.
The Toyota 1UR-FE is oversquare — the 3.7008" bore exceeds the 3.2677" stroke by 13.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.2677" stroke does not reach 4,000 ft/min of mean piston speed until about 7,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 8 cylinders displaces 35.2 ci (576 cc).
10 factory variants share these dimensions, rated at 310 hp across 2010–2019.
| Displacement | 281.2 ci / 4.6 L |
|---|---|
| Bore | 3.7008" |
| Stroke | 3.2677" |
| Cylinders | 8 |
| Configuration | V8 |
| Bore/stroke ratio | 1.133 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 310 hp |
| Years | 2010–2019 |
| Bore/stroke character | 1.133 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,268 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.1 ci |
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 |
|---|---|---|
| 2010 | 310 hp | 1UR-FE |
| 2011 | 310 hp | 1UR-FE |
| 2012 | 310 hp | 1UR-FE |
| 2013 | 310 hp | 1UR-FE |
| 2014 | 310 hp | 1UR-FE |
| 2015 | 310 hp | 1UR-FE |
| 2016 | 310 hp | 1UR-FE |
| 2017 | 310 hp | 1UR-FE |
| 2018 | 310 hp | 1UR-FE |
| 2019 | 310 hp | 1UR-FE |