In general they work fine, but may not live as long as the OEM. Typically around one third the cost or less so unless it's on something like an emergency generator, or near impossible to change out, I go that way. I use DBelectric, urquality electric, Rare electrical, etc. Never had a DOA or warranty, the one time I needed a replacement solenoid a year and a half later I got it quick and free, thanks for your business.