4BD1 Crankshaft for Isuzu 4BD1 / 4BD1T 3.9L Engines

The Isuzu 4BD1 crankshaft (for the 3.9L, 4-cylinder diesel engine) is constructed from cast iron. Its key specifications include: connecting rod journal diameters of approximately 2.517–2.518 inches (63.93–63.98 mm) and main journal diameters of 3.146–3.147 inches (79.91–79.94 mm). The crankshaft features a flange with six bolt holes and is typically compatible with engine models such as the 4BD1, 4BD1T, and 4BD2T.