Product Details

Specifications

used diesel engine spare parts liner kit:
TS16949,QS90100 Certifications
2.Timly delivery within 65 days

Linr kit for Cummins NT855

More items:

E-Model	OEM No	Piston Size		Ring Size	Liner Size
NT855	3051557	Dia	139.7	4.1T 3.3T 3.3T 4.8	A:	139.7
		GL	159.4		B:	166.7
		KH:	102.5		C:	288.2
		Pin Dia:	50.775		W:	8.1
		Length:	120.2
		Double Alfin

Piston surface treatments

Piston ring Introduction

Top Ring

This is referred to as the "upper compression ring". The upper compression ring is the piston ring that operates under the harshest conditions with respect to thermal and mechanical loading . Its job is to form a gas-tight barrier between the piston and cylinder wall in order to seal the combustion chamber.

Second Ring

This is referred to as the "lower compression ring". One of its job is to work together with the top ring in order to "seal" the combustion chamber.

Oil Ring

As its name "oil control ring" implies, this ring scrapes excess lubricating oil off the cylinder wall , maintaining proper lubrication while keeping oil consumption within proper limits.

Liner kits