Solid copper core and nickel-tipped electrode provide longer life and greater spark
Patented triple gasket sealing process prevents combustion gas leakage for cleaner engine operation
High alumina ceramics enhance heat transfer and electrical insulation for consistent ignition
Corrugated ribs on insulator prevent flashover and improve durability
Zinc-dipped shell resists corrosion for extended service life
Summarized by Shop
The NGK BKR7E 4644 spark plug is our go-to copper spark plug for JZ's and 7m's running pump gas. This plug works well as a stock replacement for both JZ's and 7m's. It also works well up to around 500 hp and BPU builds. Be careful of inferior, fake NGK spark plugs that look the same but dont perform the same! The price is for one spark pl