Isuzu RZ engine

The Isuzu RZ engine family includes the RZ4E-TC, a 1.9 L direct injection diesel with turbo intercooling that replaced the 4JK1-TCX in the Isuzu D-Max and Isuzu MU-X. Its displacement is 1,898 cc, with an 80.0 mm bore and 94.4 mm stroke, and it makes 150 hp at 3,600 rpm and 340 Nm of torque. The RZ4F-TC is a 2.2 L unit of 2,164 cc, with an 83 mm bore and 100 mm stroke, producing 163 hp and 400 Nm; it replaced the RZ4E-TC in the D-Max and, in Thailand for model year 2025, the MU-X.