Out of curiosity would using a coil and igniter from a car on my 15hp B&S cause catastrophic failure? Just wondering cuz a guy came in to work the other day to get a coil for his Koehler mower engine and we were able to find him one that was comparable. Now I'm sure his engine is significantly larger than mine but the plug wire on my stock coil is pretty rough and is wrapped with electrical tape and I have tons of spare car parts.