NGK B7ES Spark Plug - 14mm X 19mm - NOS Fit Suzuki RM250 RL250 GT550

Need a solid spark plug for your classic Suzuki or other machine?

This is an NGK B7ES, new old stock (NOS) in the original box.

Thread size is 14mm, reach is 19mm—a pretty common size for older bikes and maybe some cars or lawn equipment.

Fits models like Suzuki RM250, RL250, GT550, and more.

It's also listed as p/n B-77EC, which is another way NGK labeled these.

This one is brand new, never fired, so it's ready to drop in and spark up.

NGK is the go-to brand for many mechanics, so you know it's quality.

If your engine is hard to start, missing, or just due for a tune-up, grab this plug.

Simple, reliable, and in stock.