Fleetguard FS1091 cross reference

Baldwin lists BF9866-O as the replacement for FS1091.

Source: Baldwin Manufacturers' Cross-Reference, Form 560-24 (2024). FS1091 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.

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