NGK 3346 BR7EF V-Power Spark Plug Copper Core Resistor M14

The NGK 3346 (BR7EF) V-Power spark plug is a copper-core, nickel-alloy resistor spark plug. It is an upgrade over standard nickel-type plugs and suits engines originally fitted with nickel-tipped plugs. NGK is a leading original-equipment spark plug supplier, and V-Power plugs are built to OE-quality standards.

Key Features:

• V-groove center electrode: Places the spark closer to the air/fuel mixture and improves ignitability. It also lowers ignition system voltage requirements and gives the flame more room to expand.
• Solid copper core: Improves heat dissipation and conductivity across a wide heat range. This supports fuel economy and lower emissions.
• Trivalent metal plating: Resists corrosion and seizing, which makes installation and removal easier.
• Cold-rolled threads: Help prevent cross-threading and cylinder head damage.
• Ceramic insulator: High-grade alumina silicate ceramic gives strong dielectric performance.
• Built-in resistor: Suppresses radio frequency interference.

Specifications:

• NGK part number: 3346 (also listed as BR7EF)
• Thread size: M14 x 1.25
• Reach: 0.689 in
• Seat type: Tapered (no gasket washer)
• Hex size: 5/8 in (16 mm)
• Pre-set gap: 0.7 mm (0.028 in)
• Terminal: Non-removable nut
• Center electrode: Nickel alloy over copper core
• Resistor: Yes
• Cross-references: Jaguar EBC004021, Beck/Arnley 1765245

NGK recommends V-Power plugs for engines with OE nickel alloy plugs, not for vehicles with factory precious-metal plugs. Use the 3346 as a dependable replacement or a step up from standard plugs.