Nissan/mercedes 2.3 Single/twin-turbo YS23 Engine

The Nissan/Mercedes YS23 (also known as the M9T in Renault applications or OM699 in Mercedes-Benz) is a highly advanced 2.3-liter, four-cylinder diesel engine. Born from the Renault-Nissan-Mitsubishi Alliance, it was designed to replace larger, less efficient engines by using high-pressure turbocharging to deliver massive torque from a smaller displacement. Key Specifications & Features Type: 2.3L Inline 4-Cylinder, 16-Valve Diesel Valvetrain: Double Overhead Cam (DOHC) with Timing Chain Induction Options: * Single-Turbo (YS23DDT): Variable Geometry Turbocharger (VGT). Twin-Turbo (YS23DDTT): A small high-pressure turbo for low-end punch and a larger low-pressure turbo for high-speed power. Fuel System: 2000-bar Common Rail Direct Injection Power Output: * Single-Turbo: 120 kW (161 hp) at 3,750 rpm. Twin-Turbo: 140 kW (188 hp) at 3,750 rpm. Torque: * Single-Turbo: 403 Nm at 1,500–2,500 rpm. Twin-Turbo: 450 Nm at 1,500–2,500 rpm. Performance Highlights Twin-Turbo Versatility: The biturbo setup eliminates “flat spots,” providing immediate pulling power from just above idle—perfect for heavy towing and technical off-roading. Fuel Efficiency: One of the most economical engines in its class, often achieving significantly better real-world figures than the 2.5L and 3.0L engines it replaced. Refinement: Built with an offset crankshaft and advanced sound insulation, it offers a much smoother, quieter “car-like” drive compared to traditional bakkie engines. Durability: Features a robust timing chain rather than a belt, reducing long-term maintenance anxiety and service costs. Common Applications This engine is the backbone of the modern mid-sized pickup market: Nissan Navara (D23 / NP300) (Global models from 2015+). Mercedes-Benz X-Class (X220d and X250d) . Renault Alaskan . Nissan Terra (SUV variant).