BMR6A Spark Plug

The NGK 7421 BMR6A Standard Spark Plug delivers reliable performance and easier starts. This standard spark plug features a design that reduces fouling and emissions to enable smoother operation. The BMR6A uses precise air gap spacing and structure to optimize ignition timing. With the benefit of NGK's expertise, the plugs are built to last for long periods of time while working to prevent costly misfires. The 7421 uses premium materials to provide dependable sparks in a variety of engines.

NGK spark plugs push the limits of performance and innovation, bringing the most advanced technology to today’s high-efficiency engines. 

• Trapezoidal ground electrode reduces quenching
• High-grade alumina silicate ceramic for stronger insulation
• Cold-rolled threads prevent cross-threading and damage to cylinder heads