 | This article relies largely or entirely on a single source. (January 2019) |
| Toyota HD engine | |
|---|---|
 1989 Toyota 1HD-T engine | |
| Overview | |
| Manufacturer | Toyota Motor Company |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 4.2 L (4,164 cc) |
| Cylinder bore | 94 mm (3.70 in) |
| Piston stroke | 100 mm (3.94 in) |
| Valvetrain | SOHC 12 & 24 valves |
| Compression ratio | 18.6:1, 18.8:1 |
| RPM range | |
| Max. engine speed | 4200 |
| Combustion | |
| Turbocharger | Yes, with intercooler (some versions) |
| Fuel system | Direct injection |
| Fuel type | Diesel |
| Cooling system | Water-cooled |
| Output | |
| Power output | 164–420 hp (122–313 kW; 166–426 PS) |
| Torque output | 361–430 N⋅m (266–317 lb⋅ft) |
The Toyota HD is a series of Diesel engines produced by Toyota.