FF5488 Fuel Filter for Cummins ISC and ISL Diesel Engines, Replaces FF5580, 3959612, P550774, 3973232, BF7815, BF7917, 33697
FF5488 fuel filter, 7/8-14 UNF spin-on for Cummins ISC ISL engines. Replaces Cummins 3959612, Baldwin BF7815, Donaldson P550774, WIX 33697.
Description
The FF5488 fuel filter is a spin-on diesel fuel filter with a 7/8-14 UNF thread, used on Cummins ISC and ISL engines in trucks, construction equipment and industrial machinery. IXIN Filter manufactures this FF5488 fuel filter as a factory-direct replacement for the Fleetguard FF5488 and Cummins 3959612, giving distributors, fleets and repair shops a dependable option for scheduled fuel filter replacement.
IXIN has produced filters since 2010 and supplies customers in more than 60 countries. Browse our full range of fuel filters for trucks, buses, construction and agricultural machinery.
FF5488 Fuel Filter Specifications
| Attribute | Detail |
|---|---|
| Product Type | Spin-On Diesel Fuel Filter |
| Overall Height | 175.77 mm (6.92 in) |
| Largest Outside Diameter | 93.47 mm (3.68 in) |
| Thread Size | 7/8-14 UNF-2B |
| Gasket Outside Diameter | 71.88 mm (2.83 in) |
| Gasket Inside Diameter | 62.46 mm (2.46 in) |
| Standpipe | No |
| Replaces | Fleetguard FF5488 / Cummins 3959612 |
Please confirm dimensions against your sample or drawing before ordering in bulk.
Compatible Applications
Cross-reference data lists the FF5488 fuel filter for the following applications:
- Cummins ISC and QSC8.3 engines (8.3L)
- Cummins ISL and QSL9 engines (8.9L)
- Kenworth, Mack, Peterbilt and Sterling trucks with these engines
- Construction and industrial equipment powered by these engines
Fit can vary by engine version and model year. This is a spin-on filter without a standpipe, so do not use it in place of a standpipe-style secondary filter. Please confirm your engine, model year and the OE number of your existing filter before ordering.
FF5488 Cross Reference / Replacement Numbers
The FF5488 fuel filter is a cross reference to the following part numbers:
| Brand / Source | Part Number |
|---|---|
| Fleetguard | FF5488 / FF5580 |
| Cummins | 3959612 / 3973232 |
| Baldwin | BF7815 / BF7917 |
| Donaldson | P550774 |
| WIX | 33697 |
| NAPA | 3697 |
| Carquest | 86697 |
| Fram | FP10275 |
| Luber-finer | LFF5488 |
OE and aftermarket part numbers are listed for reference only. All brand names belong to their respective owners, and IXIN is not affiliated with them. Always confirm fit against your engine before ordering.
Why Fuel Filter Replacement Matters
Dirt, rust and water in diesel fuel can damage injectors and fuel pumps. A fuel filter captures these contaminants before the fuel reaches the engine. Regular replacement helps prevent hard starting, power loss and costly injector repairs, especially on engines that run long hours or use stored fuel.
Why Choose IXIN’s FF5488 Fuel Filter
- Factory-Direct Supply: IXIN manufactures filters in its own factory in Linxi County, Hebei. You deal with the manufacturer, not a trading company.
- Wide Cross-Brand Coverage: One FF5488 fuel filter replaces Fleetguard, Cummins, Baldwin, Donaldson and WIX references, which helps distributors simplify inventory.
- Popular Engine Family: Cummins ISC and ISL engines are widely used in trucks, buses and equipment, so one stock item can serve many customers.
- Customization Available: We support customization of filter paper quality, metal thickness and packaging for your market.
- Fast Delivery: In-stock items usually ship in 5 to 10 days. Made-to-order items take 15 to 45 days, depending on quantity.
To avoid cross-reference mistakes, read our fuel filter cross reference guide before placing a bulk order.
Installation and Maintenance Notes
- Switch off the engine and let it cool. Close the fuel shutoff valve if fitted.
- Place a drain pan under the filter, and remove the old filter with a filter wrench.
- Check that the old gasket came off with the filter. A leftover gasket can cause leaks.
- Clean the mounting surface, and lightly oil the gasket of the new FF5488 fuel filter.
- Spin the new filter on by hand until the gasket touches, then tighten as specified by the engine manufacturer.
- Prime the fuel system according to the engine manual, start the engine, and check for leaks.
- Replace the filter at the interval recommended by the engine maker, and sooner when using poor-quality fuel.
FAQ
Q: Which part numbers does the FF5488 fuel filter replace?
A: It is a cross reference to Fleetguard FF5488 and FF5580, Cummins 3959612 and 3973232, Baldwin BF7815 and BF7917, Donaldson P550774, WIX 33697 and others listed above. Confirm fit before bulk orders.
Q: What thread does the FF5488 fuel filter use?
A: It uses a 7/8-14 UNF-2B thread. Make sure your filter head matches before ordering.
Q: Which engines does the FF5488 fuel filter fit?
A: It is listed for Cummins ISC, QSC8.3, ISL and QSL9 engines. Fit varies by engine and model year, so send us your OE number, engine model or a photo of the old filter, and we will help confirm.
Q: Can I use the FF5488 as a secondary filter?
A: Only if your system calls for a spin-on filter without a standpipe. Check your engine manual and the OE number of your old filter.
Q: Can I order with custom packaging or private label?
A: We support customized packaging, filter paper quality and metal thickness. Contact our sales team with your requirements.
Q: What are the MOQ and lead time?
A: In-stock goods generally ship in 5 to 10 days, and made-to-order items take 15 to 45 days. Get in touch with us for MOQ on the FF5488 fuel filter.
Need the FF5488 fuel filter or other heavy-duty fuel filters? Send us the OE number, and we will reply with specifications and a quotation.
Email: sales@ixinfilters.com | WhatsApp: +86 18833443345 | Get a quote
