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    Baldwin B421 cross reference

    Manufacturer numbers Baldwin lists B421 as the replacement for

    Baldwin's 2024 catalog lists B421 as the replacement for these manufacturer part numbers:

    ManufacturerTheir part number
    CARQUEST85334HD
    CLARK MATERIAL HANDLING CO.918648
    GRAINGER2KYL2
    HASTINGSLF542
    ISUZU8944304111
    MAIN FILTERMF0244151
    SAKURAC10023
    SERVICE CHAMPOF4459BP
    SERVICE PROSO3593A
    THERMO KING129267

    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.