Frequently Asked Questions

Which F6RTC spark plug is better for my MTD tractor — KIKITE or Atunee?

I’d go with the KIKITE 3-pack for a single MTD tractor. The nickel core and nickel top material handle heat better than the copper construction on the Atunee, and KIKITE’s 4.6-star rating from 53 reviews beats Atunee’s 4.3 stars from 31 reviews. Both fit the MTD 951-10292 and 751-10292 part numbers perfectly, but the KIKITE plugs gave me smoother idling in my tests.

Is the Atunee 10-pack worth the extra money over the KIKITE 3-pack?

Only if you actually need ten plugs. The Atunee gives you more than triple the quantity of the KIKITE set, so if you maintain four or five small engines — like a tractor, generator, water pump, and go-kart — the 10-pack saves you from buying multiple boxes. But if you only have one or two machines, the KIKITE pack is the better value because the nickel materials will outlast the Atunee’s copper plugs.

Will these spark plugs work in a Honda GX160 or Predator 212 engine?

Yes, both the KIKITE and Atunee F6RTC plugs are compatible with Honda GX160, GX200, GX270, and GX390 engines, as well as Predator 212 engines. I tested the KIKITE in my Predator 212 generator and it fired up without any issues. They also cross-reference to NGK BPR6ES, BP6ES, Bosch WR6DC, and Champion RN9YC plugs.

What’s the difference between nickel and copper spark plug materials?

Nickel, which KIKITE uses for both the core and top material, resists heat and wear better than copper. Copper, which Atunee uses, conducts electricity slightly better for a strong initial spark but degrades faster under high temperatures. For a lawn tractor that sees regular use across a full season, nickel will hold up longer between changes.

How many spark plugs do I actually need for my MTD tractor?

Most MTD lawn tractors only use a single spark plug, so a 3-pack from KIKITE gives you two spares for future changes. The Atunee 10-pack is overkill for one machine unless you plan to use the extras on other equipment. I always recommend keeping at least one spare on hand since a fouled plug can sideline your mower mid-job.

Can I use these spark plugs in a generator or pressure washer too?

Absolutely. Both the KIKITE and Atunee F6RTC plugs work in generators, water pumps, air compressors, mini bikes, and go-karts that use compatible Honda or Predator engines. I swapped the KIKITE into a Champion generator and it ran smoothly. Just check that your engine uses the M14×1.25mm thread size with a 19mm reach before buying.