Genuine Fleetguard FS20121 Fuel/Water Separator | Cummins B6.7 L9
SKU FS20121
In stock: 7 available · Ships from Kelowna BC
Verify fitment by part number before ordering.
Match the listed SKU and verified cross-references to your current part number. If fitment is not listed, send AIM Rentals the machine details and current part number before ordering.
The Genuine Fleetguard FS20121 is the next-generation spin-on fuel/water separator for 2021+ Cummins B6.7 and L9 engines (Stage V / EPA 2021). Featuring 10-micron synthetic microglass media with 95% emulsified and free water separation, it supports extended service intervals up to 1,000 hours. Designed for medium-duty trucks, buses, and motorhomes with Cummins B6.7 and L9 engines. Stocked in Kelowna, BC and ships Canada-wide.
Specifications
- Vendor: Fleetguard (Atmus Filtration Technologies)
- Part Number: FS20121
- Type: Fuel/Water Separator, Spin-On Cartridge
- Thread Size: M95 x 2-7H (metric)
- Largest OD: 120.6 mm (4.74 in)
- Micron Rating: 10 micron @ 98.7% efficiency (SAE J1985)
- Water Separation: 95% free and emulsified
- Service Interval: Up to 1,000 hours
- Media Type: Synthetic Microglass
Fitment
The FS20121 is designed specifically for 2021+ Cummins B6.7 and L9 (Stage V/EPA 2021) engines in the following applications:
- Freightliner M2 106, S2RV, S2C, XC Raised Rail with Cummins B6.7 and L9 (2021+)
- International trucks with Cummins B6.7 and L9 (2021+)
- Kenworth with Cummins L9 (2021+)
- Peterbilt 365 with Cummins L9 (2021+)
- Mack with Cummins B6.7 and L9 (2021+)
- Blue Bird buses with Cummins B6.7 and L9 (2021+)
- Western Star, Hino, Thomas, Autocar, Van Hool, Integrated Coach with Cummins B6.7/L9
Cross-References
The FS20121 replaces the following part numbers:
- Cummins OEM: 5444245, 5528103
- Baldwin: BF46266-SPS
- Terberg: T13017490
- Wirtgen: 2705826
Frequently Asked Questions
What engines does the FS20121 fit?
The FS20121 fits Cummins B6.7 and L9 engines manufactured from 2021 onwards (EPA 2021 / Stage V emissions standard). It does not fit older ISB, ISL, or pre-2021 B6.7/L9 engines.
What is the Cummins OEM number for the FS20121?
Cummins OEM numbers 5444245 and 5528103 are direct cross-references for the Fleetguard FS20121.
Is this a genuine Fleetguard filter?
Yes. AIM Rentals stocks Genuine Fleetguard products from Atmus Filtration Technologies, the OEM manufacturer.
Why does the FS20121 cost more than older Cummins B6.7 fuel separators?
The FS20121 is the next-generation filter for 2021+ Stage V engines. It uses premium synthetic microglass media and is designed for extended 1,000-hour service intervals. The larger M95x2 metric thread housing and advanced water separation technology distinguish it from earlier designs.
| Make | Model | Year | Engine / Spec |
|---|---|---|---|
| [["Cummins","B6.7"],["Cummins","L9"],["Cummins","ISL"],["Cummins","ISL9"],["Cummins","ISB"]] | |||
Browse all parts for these machines
Ships from Kelowna BC after order review.
Shipping options and totals are shown at checkout.
Transit timing depends on carrier service, destination, and order review.
Review the published shipping and return policies before ordering.
Questions? Contact AIM Rentals.