Suitable for ISUZU 4JJ1 NKR Parts 8942394230 8 94239423 0 Valve Guide

8942394230 8 94239423 0 4JJ1 NKR  Valve Guide  ISUZU  NKR Parts

WW-4J394 8942394230 8 94239423 0 Valve Guide  ISUZU NKR Parts

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The function of the valve guide

1. Precise Guidance and Centering
   
   
   During operation, the valve performs high-frequency reciprocating linear motion. The valve guide can strictly restrict the radial swing of the valve, ensuring that the sealing cone surface between the valve head and the valve seat ring is always accurately fitted. This prevents cylinder air leakage, power loss and other problems caused by poor sealing, and also avoids abnormal eccentric wear between the valve stem, valve seat ring and valve guide.
2. Auxiliary Heat Dissipation
   
   
   The valve works in the high-temperature environment of the combustion chamber. Its heat can be transferred to the valve guide through the valve stem, and then to the cylinder head via the guide, realizing the dissipation of part of the heat. This reduces the working temperature of the valve to a certain extent and delays the thermal fatigue and aging of the valve material.
3. Sealing and Contamination Prevention
   
   
   A small amount of lubricating oil is used between the valve guide and the valve stem for lubrication. The fit clearance of the guide is precisely designed to meet the lubrication requirements while reducing excessive oil ingress. At the same time, it can block high-temperature gas, carbon deposits and other impurities in the cylinder from entering the valve chamber, avoiding contamination of the lubrication system of the valve mechanism.
4. Load Bearing and Wear Resistance
   
   
   Valve guides are usually made of wear-resistant materials such as cast iron and powder metallurgy. They can directly bear the friction and impact force generated by the reciprocating movement of the valve stem, protect the valve hole of the cylinder head from wear, and extend the overall service life of the cylinder head.

FAQ

1.Q:What is your terms of payment?
A:T/T 30% as deposit, and 70% before delivery. We will send you the packing list and the photos of the products before your payment.

2.Q:Do you have MOQ request?
A: We don’t have MOQ request. We are wholesaler for ISUZU Truck spare parts, we have a large stock of products.

3.Q: What is the delivery time?
A: The delivery is depends on the storage. If the items we have in stock, we can make delivery within 7days. For the items need to be ordered the delivery is betwen20-45 days.

4.Q.:Can you produce according to the samples?
A: Clients’sample is welcome. We are able to produce the specific products according to your sample.

5.Q: Can l get a lower price if l order large quantities?
A: Yes, cheaper prices with bigger amount of order.

Auto parts suitable for Japanese Trucks : CYZ51K 6WF1 / FVR34 6HK1 / FSR33 6HH1 / NPR75 4HK1 / NLR85 4JJ1 / NPR71 4HG1 / NPR66 4HF1 / QKR55 4JB1 / NKR55 4JB1 / DMAX / HINO 700/500 / 300 E13C /J08/J05 / N04C etc.