1.Cylinder head assemblies are tested by pressure leakage detection, which are100% qualified.

2.The air tightness of our cylinder head assembly is 100% checked,which are qualified.

3.The valve clearance is in accordance with the OE standard.

4.The torque standard of all fasteners is in accordance with the OE standard.

5.The durability of the product is better than other manufacturers’ product.

6.All product accessories are new parts, and refurbished products are not accepted.

7.After-sale service is guaranteed, and the warranty is 6 months after the activation of the installed scanning code.