Filter Cross Reference

    Baldwin RS4639 cross reference

    Manufacturer numbers Baldwin lists RS4639 as the replacement for

    Baldwin lists RS4639 as the replacement for these manufacturer part numbers:

    ManufacturerTheir part number
    CARQUEST93279
    CATERPILLAR1421403
    GRAINGER2NTW5
    HASTINGSAF2439
    NAPA GOLD6771FR
    WIX46771FR

    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.