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    Baldwin PA3421 cross reference

    Manufacturer numbers Baldwin lists PA3421 as the replacement for

    Baldwin's 2024 catalog lists PA3421 as the replacement for these manufacturer part numbers:

    ManufacturerTheir part number
    AIR REFINERARM131231
    CARQUEST93460
    CATERPILLAR3I0242
    DONALDSONP131231
    FLEETGUARDAF4792
    FLEETRITEAFR84792
    GARDNER DENVER5L34
    GPCEP5280
    GRAINGER4XAK7
    HEAVY DUTY AIRA1231
    HEAVY DUTY AIRHDA1231
    NELSON-WINSLOW131231
    SURE FILTER TECHNOLOGYSFA1231

    Source: Baldwin Manufacturers' Cross-Reference, Form 560-24 (2024). Baldwin's published direction is manufacturer part → Baldwin replacement. This list shows what Baldwin published in 2024. It does not verify that the numbers interchange today.

    Upgrade chains run one way: equipment spec'd with a newer filter number should not step back to the older one. Go by what the truck was spec'd with.

    Always verify against the current OEM catalog before ordering. Cross references are a starting point, not a guarantee of fit.

    See a wrong cross? Report a wrong cross.