Arnold FirstFire 3/8 In. Spark Plug
SKU: 143519
Consistent starts, dependable performance, superior fouling resistance. Replaces Champion Model No. RJ17LM, RJ19HX, and 5861. Replaces NGK Model No. B2LM, B2LMY, B4LM, B4LMY, and BR4LM. Replaces Autolite Model No. 456 and 458.