Filters

Planning a filter order

Begin with the stamp on the removed can or cartridge, not the tractor badge alone. Oil, fuel, and coolant filters share warehouse space and protect different circuits.

Match gasket outer diameter, thread pitch, and overall height to the unit you removed. A family cross that ignores those three invites leaks and bypass complaints.

Decide whether you need full-flow lube, fuel polishing, water separation, or coolant chemistry media before you compare the cards in the grid above.

• Photograph both ends of the old element and the base gasket before disposal.
• Note any metal on the lube magnet, diesel odor in the crankcase, or gelled coolant in the bowl — log those clues on the work order.
• Open one product card when you need the published fitment table; extra gallery images load as you scroll.
• Stamp unreadable? Email support@aonetruckauto.com with the VIN and a clear photo of the old part.

Evidence from the removed element

Restriction gauges and oil analysis tell you when media is loaded; do not invent mileage on this department page.

Fuel filters that fail between PM cycles deserve tank inspection and pump health checks, not only another spin-on.

Retain the old can until the replacement is torqued, filled, and road-tested — side-by-side settles thread and gasket disputes.

Fleets and engines we publish

These numbers commonly serve Freightliner Cascadia, Kenworth T680, and Peterbilt 579 linehaul tractors on Cummins ISX and X15 packages, plus mixed Detroit, Volvo, and Mack fuel circuits for compact spin-ons.

Vocational fleets still running combination lube filters appear beside newer NanoNet-style oil filters — read the engine row on each linked product page.

Make chips on the cards are orientation only; the fitment table on each SKU page lists the make, model, year, and engine rows we publish for that part.

Interval and chemistry discipline

Align coolant filters with SCA versus ELC programs. Mixing chemistries costs more than the can itself.

Site guides orient first-time buyers; engine maker service literature remains authoritative for torque, fill volume, and change sequence. Fulfillment terms appear on our shipping policy page; opened filter returns follow returns and refunds.

Brand and cross lookups

Cross references help when purchasing speaks Donaldson and the bay speaks Fleetguard. Still dry-fit or measure before you open a case of the wrong thread.

Questions about a missing stamp go to support@aonetruckauto.com with photos attached.

This catalog is operated by HEAVY TRUCK PARTS, INC., a Florida profit corporation. Compatibility names describe fitment only — A-One Truck Auto is an independent seller, not a factory outlet.

Each filter SKU explained

The notes below describe each published filter in this department. Dollar amounts stay on the cards — this section does not repeat them.

LF9009 is the Fleetguard full-flow spin-on oil filter spec’d for Cummins ISX and X15 engines in high-mileage linehaul duty — open Fleetguard LF9009 Lube Spin-On Filter for chassis rows and cart checkout.

FF5488 pairs a Fleetguard fuel filter with its cast head for Cummins ISX circuits that need injector protection from particulate load; fitment and ordering live on Fleetguard FF5488 Fuel Filter Assembly.

When the stamp reads FS1022, you are looking at a Fleetguard fuel/water separator with a drain petcock — follow Fleetguard FS1022 Fuel/Water Separator for published applications and PayPal payment on that SKU.

LF14000NN carries NanoNet media for newer X15 engines that call for LF14000-series oil filtration; verify engine rows on Fleetguard LF14000NN NanoNet Oil Filter before checkout.

LF3000 is the combination full-flow and bypass spin-on for older Cummins platforms still common in dump and mixer fleets — details are on Fleetguard LF3000 Combination Lube Filter.

Donaldson P551000 is a spin-on fuel/water separator (cross FS1000 / BF1259) for Cummins highway fuel circuits — see make and model coverage at Donaldson P551000 Fuel/Water Separator.

Baldwin BF7633 is the high-efficiency red canister fuel filter for Cummins highway engines when Baldwin is on the PM sheet — cart and fitment sit on Baldwin BF7633 High Efficiency Fuel Filter.

FF105 is the compact Fleetguard fuel spin-on used across mixed Detroit, Volvo, and Mack fuel plumbing — confirm your circuit on Fleetguard FF105 Fuel Filter.

These eight listings are the public Filters assortment for the current A-One Truck Auto catalog. Search, preland, and guide links should land here or on a product page — not on a third-party marketplace.

Oil filters guard bearings and turbochargers from soot and wear metals. Fuel filters and separators guard high-pressure pumps and injectors from water and grit. Coolant filters support chemistry that keeps liners and water pumps alive. Treating all three as one bin is how fleets buy the wrong thread twice.

When media collapses early, ask what changed upstream: skipped tank cleaning, fuel source quality, extended idle with dirty air, or coolant topped from the wrong jug. The can is often the messenger, not the root cause.

Stock the spin-ons your fleet actually runs and keep one spare fuel/water separator for wet harvest or winter gel events. Overstocking unlabeled look-alike cans creates night-shift mistakes that show up as roadside derates.

Oil circuit specifics

Full-flow lube filters see constant pump pressure and hot crankcase oil. Bypass paths on combination filters only open when media is loaded — running the wrong combination filter on an engine that expects straight full-flow can starve the turbo during cold start.

Donaldson and Fleetguard crosses for the same engine family often differ in anti-drainback valve behavior. If the engine rattles on morning start after a brand swap, verify valve spec against the service bulletin, not only thread size.

Record filter cut-open results when your fleet runs oil analysis. A sudden rise in silicon with clean air filters points to dust ingestion elsewhere; copper without iron may mean coolant leak rather than bearing wear.

Fuel and water separation

Primary fuel filters protect the transfer pump; secondary filters protect injectors. Swapping only the spin-on while ignoring a loaded assembly head leaves old sediment in the cast bowl.

Water separators need periodic draining in humid regions and after bulk fuel deliveries from tanks you do not control. Teach drivers which petcock is fuel versus water so PM visits are not surprise gel events.

Baldwin red canisters and Fleetguard FF assemblies both appear on Cummins PM sheets — pick the one your maintenance software already codes, then stick to it unless analysis proves a change.

Ordering through this catalog

Each filter card links to a product page with chassis rows, gallery images, and PayPal checkout managed by HEAVY TRUCK PARTS, INC. Add multiple spin-ons to the cart when you are stocking a lube trailer; weights stay modest compared with brake drums.

If a stamp on the old can does not appear in search, email support@aonetruckauto.com with diameter and thread measurements — we can often narrow the family without guessing from make alone.