Description
PAI 421106 Fuel Injector Seal / O‑Ring Kit
Designed for use on International (Navistar) HEUI diesel engines, specifically the DT466E and DT530E platforms. This kit provides the essential sealing components required to prevent fuel, oil, and combustion gas leaks at the injector–head interface.
Manufactured by PAI Industries, the 421106 injector seal kit is engineered to meet or exceed OEM sealing requirements. The seals are constructed from engine‑grade elastomer materials capable of withstanding high pressure, temperature, and chemical exposure common to HEUI fuel systems. Proper injector sealing is critical for maintaining fuel efficiency, reliable injector performance, and preventing hard starts or injector-related fault conditions.
Features
Complete injector seal / O‑ring kit
Prevents fuel, oil, and compression leaks
Designed for HEUI injector applications
High‑quality elastomer seals resist heat and chemical attack
Direct replacement for OEM injector seal kits
Ideal for injector service or replacement procedures
Cross‑Reference:
Navistar / International: 1842624, 1842624C92
Mack: 4333‑1842624C92
PAI: 421106
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