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    O-Ring Kit - 321285

    O-Ring Kit

    The PAI Industries 321285 Injector O-Ring Kit is a precision replacement for fuel injectors in Caterpillar engines—3406E, C13, C15, and others. Crafted to meet OEM standards, it includes high-quality O-rings designed for secure sealing and leak prevention. Cross-references include Caterpillar 189-5390 and 248-1394. Manufactured in the U.S. by ISO-certified PAI, this kit ensures easy installation and long-term reliability. Exclusively available from Wofford Truck Parts.

    Pai Industries Part No: 321285

    $9.20

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    Specifications

    PAI Industries 321285 Injector O-Ring Kit is engineered for use in Caterpillar engines including 3176, C10, C11, C12, C13, 3406E, C15, C16, and C18 series. This kit includes essential O-rings for fuel injector assemblies and matches OEM references Caterpillar 248-1394 and 189-5390 for direct compatibility. Manufactured under ISO 9001:2015 standards in the U.S., it ensures dependable sealing performance and durability. Backed by PAI’s 2-year unlimited-mileage warranty, this kit provides quality assurance for engine rebuilds or maintenance. Sold by Wofford Truck Parts.
    Weight
    0.01

    Compatibility

    Freightliner & Western Star highway tractors using CAT 3406E or C15 engines — late 1980s–early 2000s

    Peterbilt 379 / 359 models with CAT powerplants — 1980s–1990s

    Kenworth W900 / T800 spec’d with CAT engines — 1980s–1990s

    Vocational equipment (qualifying excavators, generators, etc.) using C13, C15, C16 — 1990s–2000s


    Alternative Part Numbers

    Caterpillar 189-5390
    Caterpillar 248-1394
    PAI 321285

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