Pistons- nominal diameter 100 mm, with a conical recess on the bottom, with a thermostatic insert, cast aluminum alloy and tin-plated
The top has three grooves for piston rings.
Piston pins - floating type with a diameter of 25 mm, hollow. to increase fatigue strength, the inner surface of the fingers has an improved finish.
Connecting rods - steel, I-section. the connecting rod length is increased by 7 mm compared to the connecting rods of the ZMZ-4025, ZMZ-4026 engines.
The diameters of the upper and lower heads of the connecting rods are the same size as the connecting rods of the ZMZ-4025, ZMZ-4026 engines.
The crankshaft is five-bearing, cast from special high-strength cast iron and has all journals hardened by high-frequency currents.
The front end of the crankshaft is sealed with an oil seal 4 running along the outer surface of the pulley hub.
The rear end is sealed with an oil seal 2, working on a special neck with a diameter of 80 mm.
The neck is hardened by high frequency currents.
The axial force is absorbed by the front crankshaft bearing through two thrust washers.
The shells of the main and connecting rod bearings of the crankshaft are made of steel tape filled with an anti-friction alloy.
Flywheel - cast iron with a steel ring gear for starting with a starter; balanced assembly with crankshaft and clutch.
The flywheel is attached to the crankshaft (to the end of the neck with a diameter of 80 mm) with seven self-locking bolts M 10 × 1.25 mm.