FASS fuel filters work with multiple OEM and aftermarket part numbers, so you need to match your specific system model and filter type to the right cross reference

FASS Fuel Systems manufactures lift pumps and fuel filtration products for diesel trucks, primarily Dodge Cummins, Ford Powerstroke, and GM Duramax engines. Their filters are not interchangeable across all FASS models — a filter for a FASS 140-GPH system will not fit a FASS Titanium or FASS Signature series pump. The cross reference depends on which FASS product line you own, what OEM filter your truck originally used, and whether you want a direct FASS replacement or an equivalent from another manufacturer.

FASS publishes cross reference charts for their major product lines, but these are scattered across product manuals and spec sheets rather than in one central location. Understanding how FASS filters relate to Motorcraft, Mopar, AC Delco, and Baldwin equivalents saves you from buying the wrong part and having to return it.

Key Takeaways

  • FASS filter compatibility depends on your specific pump model (140-GPH, Titanium, Signature, or Duramax), not just the brand name FASS.
  • FASS publishes cross references in individual product manuals and on spec sheets, which you can request from their customer service or find through your truck's year and engine.
  • Common OEM equivalents include Motorcraft FD-4615 (Ford), Mopar 5083286AA (Dodge), and AC Delco TP3018 (GM), but these do not work across all FASS models.
  • Baldwin, Fleetguard, and WIX make filters that cross to FASS systems, but you must verify the cross reference number matches your exact pump model before purchase.
  • FASS customer service can confirm the correct filter part number in under five minutes if you provide your truck year, engine, and FASS pump model.

How FASS organizes filter compatibility by pump model

FASS makes several distinct fuel system product lines, and each has its own filter specifications. The FASS 140-GPH (their entry-level lift pump) uses a different filter than the FASS Titanium series, which uses a different filter than the FASS Signature or FASS Duramax models. This matters because the filter housing, thread size, and flow rating are engineered for each pump's pressure and volume output.

Your FASS pump model is usually printed on a label on the pump itself or listed in your purchase receipt. If you bought the pump as part of a complete fuel system kit, the model name appears in the kit documentation. Once you know whether you own a 140-GPH, Titanium, Signature, or Duramax model, you can look up the correct filter in FASS's cross reference materials.

FASS also makes spin-on filter housings and cartridge-style filters. A spin-on filter screws directly onto the pump or fuel line, while a cartridge filter sits inside a separate housing. The cross reference number changes depending on which style your system uses, so confirm the filter type before ordering.

Where to find FASS cross reference information

FASS publishes cross reference data in three main places: the product manual that came with your pump, the spec sheet on their website for your specific model, and through direct contact with their customer service team. If you no longer have the original manual, you can read it from the FASS website by entering your pump model number.

The FASS website has a product selector tool that narrows results by truck year, engine type, and process (street, competition, or marine). Once you select your truck, the tool displays your compatible FASS models and links to their manuals and spec sheets. Each manual includes a cross reference table listing OEM part numbers and equivalent filters from Baldwin, Fleetguard, WIX, and other manufacturers.

If you cannot find your model online or the cross reference is unclear, contact FASS customer service by phone or email. They maintain a database of every pump they have sold and can confirm the correct filter part number, OEM equivalent, and where to purchase it. Response time is typically same-day for phone calls and one business day for email.

Common OEM and aftermarket cross references

FASS systems for Dodge Cummins trucks often cross to Mopar 5083286AA or Mopar 68157291AA, depending on the model year and FASS pump generation. Ford Powerstroke systems frequently use Motorcraft FD-4615 or Motorcraft FD-4596 as OEM equivalents. GM Duramax trucks may cross to AC Delco TP3018 or AC Delco TP3020.

These OEM numbers are not universal across all FASS models, however. A FASS 140-GPH for a 2003 Dodge Cummins may cross to a different Mopar number than a FASS Titanium for a 2007 Dodge Cummins, even though both are Dodge trucks. The year, engine generation, and FASS pump model all affect which OEM filter will fit.

Aftermarket manufacturers like Baldwin, Fleetguard, and WIX produce filters that cross to FASS systems. Baldwin BF7648, Fleetguard FF5488, and WIX 33957 are examples of filters that may work with certain FASS models, but the cross reference must be verified against your specific pump. Buying based on a partial match or a recommendation from a parts counter employee without confirming the exact cross reference is a common source of returns and wasted time.

How to verify the correct filter before you buy

Start by gathering three pieces of information: your truck year and engine type, your FASS pump model, and the filter type (spin-on or cartridge). Write these down or take a photo of the pump label so you have them ready when you contact a supplier or FASS directly.

Call or email FASS customer service with this information and ask for the correct filter part number and at least one OEM or aftermarket equivalent. Ask them to spell out the part number and confirm it is in stock or readily available. Do not rely on a parts store employee to cross reference a FASS filter unless they have access to FASS's official cross reference data — many parts stores do not, and guessing can result in ordering the wrong part.

Once you have the correct part number, search for it at online retailers, local diesel shops, or the FASS website itself. Compare prices across suppliers, but prioritize buying from a source that guarantees the part is compatible with your system. Some retailers offer a return or exchange may provide if the filter does not fit, which protects you if there is any confusion about the cross reference.

Why FASS filters differ from standard automotive filters

FASS fuel filters are engineered for diesel engines and lift pump systems, which operate at different pressures and flow rates than gasoline engines. A standard automotive fuel filter designed for a gasoline truck will not handle the volume or pressure of a FASS lift pump system and may fail or restrict fuel flow. This is why FASS publishes separate cross references instead of straightforward listing a generic filter part number.

FASS filters also incorporate specific media and bypass valve settings to protect diesel injectors from water and particulate contamination. Using a filter with the wrong bypass pressure or media type can allow contaminants to reach the injectors or cause the filter to clog prematurely. This is another reason why matching the exact cross reference is important — it is not just about physical fit, but about the filter's performance characteristics.

If you are upgrading from a stock fuel system to a FASS system, do not assume your OEM filter will work with the FASS pump. FASS systems require their specified filters to function correctly and maintain warranty coverage. Using an incompatible filter may void the pump warranty and cause damage to the fuel system.

Frequently Asked Questions

Can I use a Baldwin or WIX filter on my FASS system if it has the same thread size?

Thread size alone does not may provide compatibility. A Baldwin or WIX filter may physically screw on but have the wrong flow rating, bypass pressure, or media type for your FASS pump. Always verify the cross reference number against FASS's official data before purchasing. Using an incompatible filter can damage the pump or injectors.

Where do I find the FASS pump model number if I do not have the manual?

The model number is printed on a label attached to the pump housing, usually on the side or top. If the label is worn or missing, contact FASS customer service with your truck year, engine type, and the date you purchased the pump. They can identify your model from their sales records and provide the correct filter cross reference.

Do FASS filters work on other brands of lift pumps?

FASS filters are designed specifically for FASS pumps and may not fit or function correctly on other lift pump brands. If you own a non-FASS lift pump, consult that manufacturer's cross reference data. Mixing brands can result in poor fit, leaks, or system damage.

What if the cross reference number I find online does not match what FASS customer service tells me?

Trust FASS customer service over online sources. Cross reference data can vary by production year, and FASS maintains the most current information. If you find conflicting information, ask FASS to explain the difference — they may have updated their specifications or the online source may be outdated or incorrect.

Can I order a FASS filter directly from FASS, or do I have to go through a retailer?

FASS sells filters through their website and through authorized dealers and retailers. Ordering directly from FASS guarantees you receive the correct part and can provide technical support if you have questions during installation. Many retailers also stock FASS filters and can ship quickly, so compare availability and shipping time before deciding where to buy.