The Owner of DFIS Mark Singleton has invested over 20 years into building a reputation of honesty and integrity in the diesel fuel system industry.

DFIS will check it out for free in most cases, bring us your pump and injectors or turbo we will evaluate them and give you an estimate of the repair. With today’s current economy everyone is nervous about spending money, having to spend thousands of dollars to repair your fuel system is the last place you want to spend your hard earned money. Marks philosophy has always been to put the bests OEM parts back into your equipment for the lowest cost. Then stand behind that repair with unlimited miles one year warranty. DFIS was one of the first diesel fuel injection repair shops to offer such a warranty.