Review on Chevrolet/GMC Fuel Injectors: ECCPP 8pcs 4 Holes Fuel Injector Kit 12580426 by Lance Foster

Worst piece of crap I've ever seen. Half of them didn't have an o-ring retainer, and after I fixed and installed them, they all fell apart, leaving a gap between where the o-ring should have fitted. This means that air is sucked in through the intake. Not to mention the debris got into the engine, thank goodness it didn't ruin the valves or anything. I had to do all the work over again. very bad quality