The YD25 engine used in the Nissan Navara D40 (especially the version assembled or rebuilt in China) is a 2.5-liter inline-4 turbo diesel engine. Below is a cylinder-specific description for the YD25:

YD25 Engine Cylinder Description

• Engine Type: Inline 4-cylinder (I4)
• Displacement: 2.5 Liters (2,488 cc)
• Bore x Stroke: 89.0 mm x 100.0 mm
• Compression Ratio: 16.5:1 (can vary slightly depending on version)
• Cylinder Block: Cast iron
• Cylinder Head: Aluminum alloy
• Valvetrain: DOHC, 16 valves (4 valves per cylinder)
• Fuel System: Common rail direct injection
• Turbocharged: Yes, with intercooler

Cylinder Firing Order:

• Firing Order: 1-3-4-2

Cylinder Arrangement:

• All four cylinders are aligned in a straight line (inline configuration).

If you’re referring to specific cylinder specs (like piston size, valve size, or torque specs), I can provide those as well. Would you like detailed cylinder part specs or a diagram?