| NA engine | |
|---|---|
 NA20P engine | |
| Overview | |
| Manufacturer | Nissan Machinery |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Displacement | 1.6–2.0 L (1,627–1,998 cc) |
| Cylinder bore | 81.5 mm (3.21 in) 86 mm (3.39 in) |
| Piston stroke | 78 mm (3.07 in) 86 mm (3.39 in) |
| Valvetrain | SOHC |
| Combustion | |
| Fuel type | Gasoline Liquefied petroleum gas (in commercial vehicles) |
| Cooling system | Water-cooled |
| Output | |
| Power output | 76–100 PS (56–74 kW) |
| Torque output | 12.8–17 kg⋅m (126–167 N⋅m; 93–123 lb⋅ft) |
| Chronology | |
| Predecessor | Z series |
The Nissan NA family of straight-four engines is a series of engines manufactured by Nissan (Nissan Machinery). It is the replacement of the Z series, on which its design is based, and is mostly used in commercial vehicles due to its use of Liquefied petroleum gas for fuel on engines with a "P" suffix code.