Injector Seals, Seal Kit & Tip Gasket (HEUI)

Our Injector Seals, Seal Kit & Tip Gasket (HEUI) category includes O-ring kits, injector seals, and tip gaskets for popular engines from Caterpillar, Cummins, Navistar, Ford, and more. These parts are built to prevent leaks, maintain correct fuel pressure, and extend injector service life. The Diesel Store provides OEM-quality and aftermarket options so you can choose the right solution for your repair or rebuild. Browse our full selection to find durable kits designed for long-lasting reliability.