The Isuzu 2.5L 4JK1 engine, particularly in the “new shape” D-Max (often referring to the RT50/RT85 generation, also known as the Gen 6 Isuzu KB/D-Max in South Africa), is a well-regarded turbocharged diesel powerplant. Characterized by its robust build and dependable performance, this 2.5-litre, 4-cylinder, DOHC, 16-valve engine has been a workhorse for the D-Max, known for its ability to handle tough South African conditions.