

Choose the original NGK B4LM - B4-LM SPARK PLUG to ensure proper functioning of your lawn mower, brush cutter, generator or 4-stroke engine.
With a base diameter of 14 mm, a thread length of 9.50 mm and a 21mm wrench size, installation is easy.
It is compatible with many engine models and can replace spark plugs such as Champion J17LM, CJ17LM, Bosch W9EO, W9ECO, ACDelco LM46, LM49, and many others. Choose quality and reliability with the original NGK B4LM SPARK PLUG to extend the life of your equipment.