NGK 90318 V-Power Spark Plug ZFR6U-9 Copper Core Nickel Alloy

The NGK V-Power spark plug 90318 (ZFR6U-9) is an OE-quality copper core spark plug. It improves ignitability over standard nickel plugs. It has a V-cut nickel alloy center electrode and a concave ground electrode, which help give quicker starts and a smoother idle. NGK is a leading OE supplier of spark plugs, and this plug is made for vehicles that came with nickel alloy plugs from the factory.

Key Features:

• V-groove nickel alloy center electrode places the spark closer to the air/fuel mixture and gives more area for flame expansion
• Concave ground electrode improves ignitability and lowers ignition system voltage requirements
• Solid copper core improves heat dissipation, conductivity and heat range
• High-grade alumina silicate ceramic insulator for strong dielectric performance
• Trivalent metal plating resists corrosion and seizing, which makes installation and removal easier
• Cold-rolled threads help prevent cross-threading and cylinder head damage
• Corrugated insulator ribs help prevent flashover, and triple seals help prevent leakage

Specifications:

• NGK part number: 90318 (ZFR6U-9)
• Heat range: 6
• Thread size: 14 mm
• Reach: 0.75 in
• Hex / wrench size: 5/8 in
• Seat type: Gasket
• Resistor type, 5,000 ohm resistance
• Center electrode: copper core with nickel tip
• Terminal: non-removable nut
• Cross references: ACDelco 25186682, Champion RC10MCC

This plug is not recommended for vehicles that have factory precious metal plugs.