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    Baldwin G31-AF cross reference

    Manufacturer numbers Baldwin lists G31-AF as the replacement for

    Baldwin's 2024 catalog lists G31-AF as the replacement for these manufacturer part numbers:

    ManufacturerTheir part number
    AIR REFINERG31
    BIG A FILTER97257
    CARQUEST90257
    CARQUEST99426
    CATERPILLAR2M0879
    CATERPILLAR2M879
    GRAINGER4YXX9
    HASTINGSG31AF
    PUROLATOR9309137
    WIX15257

    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.