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Description
FF5971NN FUEL FILTER SPIN-ONCross References Brand Manufacturer Part Number Baldwin BF46248 Carquest 96891 Cummins (OEM) 4940647, 5575143, 557 5143 Donaldson DBF5811 Fleetguard (Main Product) FF5971NN Luber finer LFF5686, LFF5804 NAPA 601071 Wix WF10891 Technical Specifications Feature Details Value Product Type Premium Secondary Spin On Fuel Filter Filtration Media NanoNet Advanced Synthetic Media Micron Rating 4 Micron (at 99. 2% Primary Particle Efficiency) Overall Height 11.
Cross References
| Brand / Manufacturer | Part Number |
|---|---|
| Baldwin | BF46248 |
| Carquest | 96891 |
| Cummins (OEM) | 4940647, 5575143, 557 5143 |
| Donaldson | DBF5811 |
| Fleetguard (Main Product) | FF5971NN |
| Luber-finer | LFF5686, LFF5804 |
| NAPA | 601071 |
| Wix | WF10891 |
Technical Specifications
| Feature | Details / Value |
|---|---|
| Product Type | Premium Secondary Spin-On Fuel Filter |
| Filtration Media | NanoNet™ Advanced Synthetic Media |
| Micron Rating | 4 Micron (at 99.2% Primary Particle Efficiency) |
| Overall Height | 11.50 inches (292.1 mm) |
| Largest Outside Diameter (O.D.) | 4.736 inches (120.3 mm) |
| Gasket Outside Diameter (O.D.) | 4.736 inches (120.3 mm) |
| Thread Configuration | M90 X 2 - 7H (Metric Thread Form) |
| Service Capacity Life | Extended lifecycle support up to 75,000 miles / 1,000 hours (depending on operational duty class) |
| Product Department | Air & Fuel Delivery Systems / Engine Fuel Filtration |
Applications & Compatibility Guide
| Category | Usage & Compatible Truck Models |
|---|---|
| Recommended Use | • Tailored as a high-performance secondary spin-on fuel filter for Class 8 commercial fleets, line-haul tractors, and heavy vocational vehicles requiring uncompromising fuel rail safety. |
| Truck & Engine Models | • Compatible Diesel Engine Generations: - Cummins X15 Series (Efficiency, Performance, and Productivity Configurations) - Cummins L9 Series - Cummins ISL9 Series - Cummins B6.7 / ISB6.7 Series - Paccar ISX Family Platforms • Heavy-Duty Commercial Truck Brands (Configured with matching engine setups): - Freightliner, International, Kenworth, Peterbilt, Spartan, Volvo, Western Star - Manufactured in model years: 2020, 2021, 2022, 2023, 2024, 2025, 2026. |
| Purpose & Function | • Engineered utilizing proprietary NanoNet™ media which features a highly consistent structural pore design to permanently capture fine contaminants even under intense chassis road vibration. • Seals out tiny particulate matter, fuel sludges, and moisture down to a strict 4-Micron boundary line, directly protecting modern High-Pressure Common Rail (HPCR) injection loops from abrasive scratching or injector clogging. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Comfort and Quality
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
These pillows are very comfortable. They hold their shape well throughout the night and have greatly improved my sleep. Plus, the quality of the materials is excellent. Highly recommended!
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Reviewed in the United States on June 2, 2026
★★★★★ 1
Terrible pillows
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
These pillows might be fine if you need them for a decorative sham, but definitely NOT to sleep on. They are super lumpy and soft, days after taking them out of package. It seems like there are just bunches of cotton strips in a row that are hard to fluff. They are also dark in some areas, so it looks like the pillow is stained, when in fact it's whatever material the stuffing is. I can't return them because they won't fit back in the box. Super disappointing.
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Comfortable from the first night
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
I found them comfortable and with good support for the head and neck. They are wide in size and feel soft when lying down. After several days of use they continue to retain their shape without problem.
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Reviewed in the United States on June 6, 2026
★★★★★ 4
Not as Firm as I had hoped
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
A good pillow.
However, there is quite a difference between the manufacturer's and my idea of "medium firmness". I found this pillow much softer than I had anticipated.
I'll have to go for firmer for my next purchase.
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Reviewed in the United States on July 28, 2025
★★★★★ 5
I admit when I was wrong.
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
3/29/26 - I took the pillows and put them in my dryer on steam refresh for the default 10 minute cycle.
OMG - they fluffed up and evened out to be soft and comfortable, no lumps whatsoever. If you like a soft pillow with some support, but not firm support, THIS is what you want. I am truly amazed.
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Previous review---They arrived in a vacuum seal bag. When you cut the bag and they inflate, they inflate lumpy like. Some areas are thick and some have to fill so, not very good. I am going to try washing them and drying them to see if they fluff up better.
Will post the results in a day or two.
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Reviewed in the United States on March 24, 2026