STR 3126 Caterpillar HUEI Diesel Injector O-Ring Kit – For 3116, 3216B, 7.3L – Set Of 6 With Pintle Covers

Got a Cat diesel engine needing some TLC?

This O-ring kit from STR is exactly what you need for servicing injectors on popular Caterpillar models like the 3126, 3116, 3216B, and even the 7.3L 6-cylinder engines.

It's a complete set of 6 injector O-ring kits, meaning you get everything to do all six injectors in one go.

Each kit includes the necessary O-rings and also comes with a pintle protective cover to keep things safe during installation.

These are brand new, direct replacement parts made in Italy and sealed in factory bagging.

They replace a bunch of OEM numbers including 242-1539, 325-5776, and 10R-0781.

STR backs them with a 1-year warranty, so you know they're quality.

If you're a diesel mechanic or a DIYer tackling an injector job, having fresh O-rings is critical to preventing leaks and maintaining performance.