Fleetguard AF421 cross reference

Baldwin's 2024 catalog lists PA1886 as the replacement for AF421 (Baldwin standard option).

Baldwin's 2024 catalog lists PA1886XP as the replacement for AF421 (Baldwin upgrade note).

Source: Baldwin Manufacturers' Cross-Reference, Form 560-24 (2024). AF421 is newer than Fleetguard's last published cross-reference index (2012), so no Fleetguard-published crosses are shown.

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.

Buy AF421: FinditParts

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