【Automotive Replacement spark plugs】Whether the spark plug needs to be replaced?If you find that the car is difficult to start in a cool state, there is obvious driving frustration, idling jitter, or engine acceleration performance declines, you should check the spark plugs in time. May be caused by aging spark plugs. 【About spark plug gapping】: In most cases your HiVehicle iridium spark plugs do not need to be re-gapped even if small variations in the factory set gap ,the ultra-efficient firing power design will compensate for those small variations. Should you decide to re-gap your iridium spark plug ,use extreme caution as improper gapping may damage or destroy the iridium center electrode or porcelain center. 【Precautions of Procurement】: To prevent parts from mismatching with your vehicle,Please use the "amazonconfirmfit" at the top left corner year/make/model and trim/engine drop down bar and interchangeable part numbers to confirm compatibility before ordering. 【Increased Conductivity】: Increased conductivity and heat control for good overall. Stability: 0.5mm laser welded fine Iridium tip reduces required voltage ensuring high durability and a consistently stable spark 【Super Durability】:Trivalent Metal Plating offers superior anti corrosion and anti seizing properties while the high performance gasket seal eliminates combustion gas leakage 【High tech reliability performance】: OE standard European technology and durability TS16949 certified manufacturer. All central electrodes are made of extremely fine 0.5mm iridium electrodes, which have good ignition performance. The insulator is made of isostatic pressing ceramic, which has high density, high strength, and good insulation. Which reduce the risk of breaking off during working and Increases Fuel Efficiency. COMPANY INTRODUCTION
Established Since 1992 .
Produce Motorcycle spark plug from 1993.
OEM motorcycle spark plug in domestic since 2000
Develop resistor type spark plug from 2002
Entering automotive spark plug range from 2005
Passed ISO/TS 16949 system in 2009.
Use automatic producing and assembly line from 2012.
New automotive spark plug plant established in 2014 .

Feature:
1.Purified alumina powder insulator:provides exceptional dielectric strength and thermal conductivity allowing the material to stand up to extreme stress
2. Copper-Glass Seal:bonds the center electrode and insulator together for a gas-tight seal. Maintains proper heat and excludes hot combustion gases.
3. Machine-Rolled Threads:For trouble-free installation and removal.Prevents seizingor cross-threading of the spark on removal.
4. The cuprum contact powder above and below has a wonderful capability of electric&heat conduction and airtightness.
5. Match world wide famous brands quality Selected raw material
6. Using highest melting point material, it resists corrosion and oxidation toughly, with much longer service life than conventional spark plugs.
7. For the fine center electrode, it requires lower ignition voltage, with easier ignition and acceleration, create more power and less emission