Top-Rated ACDelco 217-1588 GM Fuel Injector O-Ring Kit - Genuine Original Equipment, Assorted O-Rings Included Review

Replaced o-rings on injectors for 02 Sierra 5.3 LM7. The bottom o-rings in this kit seem a bit larger and don't fit as well, but they don't leak or have any issues, so maybe I'm just overestimating them.

Perfect for 2000 Silverado 1500 5.3L. Lubricate the o-rings with some engine oil to allow the injectors to slide back into the fuel rail. However, wipe off the excess with a tissue, being careful not to get it on the nozzle openings. And watch a video on how to clean or replace fuel injectors. My truck is now working perfectly.

O-rings on my injectors (at the time of replacement) are 12 years old. THAT'S RIGHT 12 YEARS! I just bought these, they are an updated design with new durable materials. put them on and they work great. Buy a pick for about $2 to remove the old o-rings and put on the new ones, this will make this job a lot easier. Be sure to lubricate the rings and jet holes with clean engine oil to avoid damaging the rings during installation. Here are another 12 plus years of service

These were installed on a 2002 Chevy Silverado when the intake manifold gasket was replaced. Replacing these gaskets added an extra 20-30 minutes to the entire project, but I'm glad I did it. You won't notice an increase in performance per se, but to me it's more of a reassurance. Used a small pickaxe to remove the old ones and put them back on using just my fingers to make sure I didn't cut the seals. Fit like original. I have driven the car about 10,000 miles since the replacement and it runs