Engine piston / Ø 78.50 mm / STD +0.50 / Mitsubishi S3L / S4L

Engine piston (rings MM433923 ) with an outer diameter of 78.50 mm and a total height of 73 mm for Mitsubishi tractors and other machines with Mitsubishi S3L, Mitsubishi S4L and other engines. The engine piston is a moving element responsible for converting gas and energy generated during combustion to the crankshaft, i.e. further into engine power. The piston is connected to the crankshaft by an element called a connecting rod with pin connections. At the top of the piston there are ring channels for mounting the piston rings, in the middle there is a hub for connecting to the connecting rod. At the top there is the so-called bottom, which, depending on the type of engine, may have a different shape. Due to work in very difficult conditions, engine pistons are most often made of aluminum and silicon alloys.

Dimensions :

• outer diameter: 78.50 mm,
• height: 58 / 72 mm,
• pin hole diameter: 23 mm,
• pin diameter: 22.90 mm,
• pin length: 64 mm,
• distance from the end of the pin hole to the lower edge of the piston: 7 mm,
• distance from edge of pin hole to top of piston: 28 mm.
• ring groove width (1G962-21112) from the top of the piston: 2.50 / 2.00 / 4.00 mm,
• original part number: 31A17-07100,
• comparison numbers: -,
• part numbers: 31A17-07100.

Engine models :

Mitsubishi :

• Mitsubishi S3L,
• Mitsubishi S4L.

Magazine : K18:A23:S03

*Photos are for illustrative purposes only and may differ in detail from the delivered product due to differences in production over the years.