Brand new 1.6 F16D4 and 1.8 F18D4 engine crankshafts for Chevrolet Cruze, Sonic, and Opel Vectra.

The Chevrolet Opel F16D4 engine has a crankshaft main journal diameter of 55 mm, a connecting rod journal diameter of 43 mm, and a stroke of 81.5 mm. These dimensions are crucial for bearing sizes, piston stroke, and engine displacement. The front and rear oil seal diameters are 31.5 mm and 80 mm, respectively.