Coolant Thermostat 7700619931 7700722762 7701348374 SWT3401-86 for Renault Trucks

Operating principle 

How to install

The thermostat installed in the pump inlet or outlet of cylinder cover, the big head of the thermostat (with the putter that head)

to the outlet pressure, high water temperature to a certain degree of the push rod drive big head, cooling fluid circulation.

FAQ

1. 1.       leak out of the wax. Due to the bad quality,paraffin hose shell sealing riveting system is bad; Failure and leakage or long use natural wax.
2. 2.       The waxy crude that doesn't work. Section temperature for wax is very strict, can only use refined to a certain purity of paraffin wax, otherwise inferior wax to temperature, expansion are not sensitive, and can't adapt to job requirements
3. 3.       When the car every 8000 km maintenance should check the thermostat in the hot water working condition.

Our factory was specialized in developing and producing automotive temperature sensing parts 

since 1970s. We are A-grade supplier of VW these years. 

Thermostat market share is around 50% from all over the domestic market. The market share of thermo switch is beyond

 80% at the mean time. 

We do take offer wholesale & quantity order, please contact us for more information.

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Shipping:

We use the main delivery company is as below:

We normally will dispatch your order within 2-10 working days depends on stock level, as soon as the order is shipped, we will list the tracking number on your order detail page, if there is any problem regarding to the shipping, please feel free to contact us. 
Below shows the estimate delivery time for different courier:- 
- FedEx: 7 to 10 working days 
- UPS: 7 to 10 working days
- EMS: 10-14 working days
- DHL: 10-14 working days 
- China post: 15-21 working days
- Hongkong post air mail: 15-20 working days 
Delay is possible and depends on your local custom & postal services. Sometimes custom will hold the order for random check, you also contact your local postal services to see if there is any international incoming mail.

Terms & return: 
guarantee 100% satisfaction on our products, and top notch customer services. ALL SALES FINAL, No
refund are offered. Item be returned/exchanged only if the items are found defected or wrong item on
arrival. If item need to be exchanged, items must be returned within 7 days from the date of authorized for
exchange. All presumed defective or wrong items must obtain an authorization before returing. Any returned package without authorization will put on hold or refused. Buyer is responsible for return shipping cost and insurance. Please note that shipping and handling are not refundable

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