Piston YaMZ-238NB

The composition of the piston kit “MOTORIST+” for YaMZ-238NB:

Piston 238NB — 1 pc
YaMZ liner — 1 pc
YaMZ pin — 1 pc
YaMZ 236 rings — 1 set
Lock rings 236 — 2 pcs
Sealing rubber rings for the liner — 4 pcs
Advantages of the piston kit:

Selective assembly

Selective assembly guarantees an increased service life of the engine kit.
High precision manufacturing

Modern high-precision equipment ensures that kit components are manufactured with micron-level precision. This provides optimal clearances in each friction pair, ensuring perfect compatibility.
Surface and coating of the liner

The processing of the working surface of the liner using plateau honing contributes to better oil retention. The fully phosphated liner is 100% protected against corrosion, and the inner surface has an additional finishing effect.
Heat-resistant coating

The piston combustion chamber surface is coated with a special heat-resistant coating called “Protect+,” which has no analogs. This coating protects the edges of the combustion chamber from thermal cracks, high-temperature gas erosion, and soot formation, promoting more complete fuel combustion.
Laser marking

High-quality laser marking is applied to the piston, liner, and piston pin.
Friction-reducing coating

A special friction-reducing coating called “Slide Pro” is applied to the piston skirt, which accelerates the running-in process, protects against scuffing, and reduces engine noise.
Microrelief

The microrelief on the working surface of the piston serves to increase the oil capacity of the piston, significantly reducing friction in the piston-liner pair.
High resistance to wear and tear

Tempering the outer surface of the pin provides increased resistance to wear.