Part number lookup
FS20121 Replacement Parts
Cross-reference and compare 4 replacement listings for OEM / aftermarket part number FS20121. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
4 Matching Products
Cummins1Pc Fuel Water Separator for Fleetguard FS20121 Cummins 5521648 5444245 5528103 Terberg T13017490$52.99
Cummins6Pcs Fuel Water Separator for Fleetguard FS20121 Cummins 5521648 5444245 5528103 Terberg T13017490$268.99
CumminsFitler Kit for Fleetguard FF63041NN FS20121 LF3970 Cummins 5526400 5528103 5296733$123.00
CumminsFuel Filter & Water Separator for Fleetguard FF63041NN FS20121 Cummins 5526400 5528103$110.80Part Numbers and Cross References
Applications and Fitment Summary
- Cummins · s: Fit For Cummins Engine:B6.7L, L9 2021+
- Cummins · Fit for following models: Autocar Llc. OnHighway-HD Truck XSPOTTER ON 2021 Blue Bird OnHighway-Bus ALL AMERICAN FE 2021 Blue Bird OnHighway-Bus VISION 2021 Blue Bird OnHighway-Bus ALL AMERICAN RE 2021 Freightliner OnHighway-HD Truck S2C BUS CHASSIS 2021 Freightliner OnHighway-HD Truck 108SD 2021
Frequently Asked Questions
What parts replace OEM number FS20121?
This page lists 4 replacement listings indexed under FS20121. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for FS20121?
Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.
Can I request a quote if FS20121 is not an exact match?
Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.