
Arnold FirstFire 3/4 In. Lawn Boy Spark Plug
Consistent starts, dependable performance, Superior fouling resistance. Replaces NGK Model No. BM4A, BMR2A, BMR2A-10, and BMR4A. Replaces Autolite Model No. 258.
Consistent starts, dependable performance, Superior fouling resistance. Replaces NGK Model No. BM4A, BMR2A, BMR2A-10, and BMR4A. Replaces Autolite Model No. 258.