100% Original Fuel Transfer Pump - Cummins Engine part Valve Stem Guide 3092014/3092585 for Cummins QST30 Engine. – Raptors

Company Introduction

Raptors, the authorized dealer of Cummins (China), established in 2015 by Mr. Jordan Wang who worked in Cummins (China) for 8 years, Jordan had been responsible for mine market for 4 years during working in Cummins china, so we have big advantages for almost all genuine Cummins generators, engine assembly and spare parts, especially for NTA855, KTA19, KTA38, KTA50, QSK60, QSX15 etc…

Our business scopes

1, Cummins generators, engine assembly and genuine spare parts

2, Shanghai Fleetguard filters and US Fleetguard filters, also the genuine Donaldson Filters.

3, HOLSET turbocharger series

4, China NHL/Terex parts series

5, China construction machinery parts

Product Parameter

The Role of the Engine Valve Stem Guide

The function of the engine valve guide is to guide the movement of the valve, ensure the reciprocating linear motion of the valve, make the valve and the valve seat ring fit correctly, and transfer the heat of the valve stem to the cylinder head. The valve guide has high working temperature and poor lubrication. It is generally made of cast iron or iron-based powder metallurgy with high graphite content to improve self-lubricating performance.

Valve guide installation method: The inner and outer cylindrical surfaces of the valve guide are processed and pressed into the valve guide hole of the cylinder head or cylinder block, and then the inner hole of the hinge is finished. The matching of the positioning snap ring can prevent the guide tube from moving and falling into the cylinder during operation. Generally, there is a slight gap between the valve rod and the valve guide, so that the valve rod can move freely in the guide tube.

Product Application

Cummins engines are mainly used in commercial vehicles, construction machinery, mining equipment, marine power and generator sets, etc.

Product Pictures