Fleetguard HF6121 cross reference
Baldwin replacement for HF6121
Baldwin's 2024 catalog lists BT839-10 as the replacement for HF6121.
Source: Baldwin Manufacturers' Cross-Reference, Form 560-24 (2024).
Part numbers Fleetguard HF6121 replaces
Fleetguard's 2012 index lists HF6121 as the replacement for these manufacturer part numbers:
| Manufacturer | Their part number |
|---|---|
| FORD (FORD) | 30891689 |
| FORD (FORD) | 591689 |
| NEW HOLLAND (NEWH) | 591689 |
| CASE (CASE) | H-311647 |
| FRAM (FRAM) | P7037 |
| DONALDSON (DON) | P77-9669 |
Source: Fleetguard Cross Reference by Part Number, doc LT19457D (2012). Fleetguard's published direction is manufacturer part → Fleetguard replacement.
Currentness: these crosses come from Fleetguard's 2012 list and have not been revalidated as current. Baldwin's 2024 list gives the same replacement for HF6121 and 5 of the 6 part numbers above. That shows a shared Baldwin replacement only. It does not verify that those numbers interchange with HF6121 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.
Buy HF6121: FinditParts
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