Spark Plug for NGK BM4A BMR4A BM6A BM7 BM7A stk 5728 12mm Short Reach
BM4A, BMR4A, BM6A, BM7, BM7A, stk 5728, stk 5921, stk 6321, stk 6521. 12mm Short Reach Spark Plug for 2 Stroke and 4 Stroke Petrol Engines. This product is designed to be compatible with NGK machines and is not the original part.