NGK 4002 BMR6A SOLID Standard Spark Plug, Nickel Alloy, M14 x 1.25

The NGK 4002 Standard Spark Plug (NGK part number BMR6A SOLID) is an OE-quality nickel alloy spark plug. It is built for reliable ignition in passenger vehicles, outdoor power equipment, and small engines. It is part of NGK's Standard line, which is made to original equipment design standards for consistent, dependable engine performance.

Key Features:

• Nickel alloy center electrode for consistent ignition performance
• Solid copper core for heat dissipation, conductivity, and a wide heat range
• High-grade alumina silicate ceramic insulator for strong dielectric performance
• Triple gasket sealing to help prevent combustion gas leakage
• Cold-rolled threads to help prevent cross-threading and cylinder head damage
• Trivalent metal plating for corrosion and anti-seizing protection, so it installs and removes easily
• Corrugated insulator ribs to help prevent flashover

Specifications:

• NGK stock number: 4002
• NGK part number: BMR6A SOLID
• Thread size: M14 x 1.25
• Reach: 3/8 in (.375)
• Hex size: 3/4 in
• Pre-gap: 0.028 in (0.7 mm)
• Resistor type: Yes
• Terminal: Solid, non-removable nut
• Ground electrode: Single, standard J-gap design
• Center electrode tip material: Nickel

NGK Standard plugs suit engines that came with nickel alloy plugs from the factory. They are not recommended as a replacement for factory precious metal plugs. Replacing worn plugs can help with misfires, rough running, hard starting, and poor fuel economy.