AF26103 Primary Engine Air Filter for International Trucks
AF26103 primary air filter for International ProStar, WorkStar, TranStar & 4400 trucks (2004-2016). Cross reference RS4862, P613336, WIX 49088. Direct.
Description
The AF26103 engine air filter is a premium radial seal primary (outer) air filter for International ProStar, WorkStar, TranStar and 4400 trucks (2004–2016 model years). It captures dust, dirt and airborne debris before it reaches the turbocharger, protecting cylinders and valves from abrasive intake contamination. IXIN Filter manufactures this filter to OEM-equivalent specifications, giving fleets and dealers a reliable, factory-direct alternative for scheduled air filter replacement.
As an IATF 16949-certified filter manufacturer, IXIN supplies the AF26103 engine air filter to distributors, fleet operators and service centers in 60+ countries, with consistent batch quality and full traceability for bulk and OEM orders.
Product Specifications
| Attribute | Detail |
|---|---|
| Product Type | Premium Radial Seal Primary (Outer) Air Filter |
| Overall Length | 408.9 mm (16.098 in) |
| Largest Outer Diameter | 305.1 mm (12.012 in) |
| Largest Inner Diameter | 190.3 mm (7.492 in) |
| Certification | IATF 16949 |
Compatible Vehicles
This filter fits most International trucks from 2004 to 2016, including:
- International ProStar
- International WorkStar (including 4400, 7300, 7400, 7500, 7600 configurations)
- International TranStar
- International 8600
- Select International LoneStar models
Note: This is the primary (outer) air filter element only. The inner secondary safety element is sold separately as Fleetguard AF26268. Confirm your truck’s exact model and year before ordering.
AF26103 Cross Reference / OE Replacement Numbers
The AF26103 engine air filter is a direct cross reference and replacement for the following OE and aftermarket part numbers:
| Brand / Source | Part Number |
|---|---|
| Fleetguard/Cummins Filtration | AF26103 |
| Navistar/International OE | 3551814C1 |
| Donaldson | P613336 |
| Baldwin | RS4862 |
| Luber-finer | LAF6663 |
| Hastings | AF2412 |
| Purolator | A65913 |
| FRAM | CA10305 |
| NAPA | 9088 |
| WIX | 49088 |
| Carquest | 83088 |
Why Choose IXIN’s AF26103 Engine Air Filter
- Premium Radial Seal Design — Ensures a leak-free fit that prevents unfiltered air from bypassing around the filter edge, protecting the turbocharger, cylinders and valves.
- Broad International Model Coverage — Fits ProStar, WorkStar, TranStar, 4400 and select LoneStar trucks across more than a decade of production (2004–2016), useful for dealers standardizing air filter inventory.
- OEM-Equivalent Fit — Manufactured to match OE dimensions for the AF26103, ensuring drop-in compatibility.
- Factory-Direct Supply — As a manufacturer (not a trading company), IXIN offers stable lead times and customization options for private label, packaging and media specification.
- Bulk & OEM Pricing — Volume discounts available for fleet operators, distributors and workshops. For guidance on verifying cross reference numbers before a bulk order, see our fuel filter cross reference guide — the same verification principles apply across air, fuel and hydraulic filter categories.
Installation & Maintenance Notes
For International trucks using the AF26103 air filter, general service steps include:
- Shut down the engine and allow the air intake system to cool before servicing.
- Open the air filter housing and remove the old primary element (AF26103) first.
- Inspect the secondary safety element (AF26268) — replace it every 2–3 primary element changes, or immediately if visibly contaminated, and never clean/reuse it.
- Inspect the housing for dust buildup or debris before installing new elements.
- Install the new filter(s), ensuring the radial seal seats evenly to prevent unfiltered air bypass, and secure the housing cover.
- Recommended replacement interval: follow your truck’s OEM service schedule, typically based on mileage or a restriction indicator reading.
FAQ
Q: Is the AF26103 the primary or secondary air filter? A: AF26103 is the primary (outer) air filter element. The secondary safety element is sold separately as Fleetguard AF26268.
Q: Is the AF26103 compatible with all the listed International truck models? A: The AF26103 fits most International ProStar, WorkStar, TranStar, 4400 and select LoneStar trucks from 2004 to 2016. Confirm your truck’s exact model and year before ordering.
Q: What’s the difference between IXIN’s AF26103 and the OEM Fleetguard filter? A: IXIN manufactures this filter to match OEM dimensions and the radial seal design. The main difference is price and lead time — IXIN offers factory-direct pricing for bulk and OEM orders without compromising fit or filtration performance.
Q: Can I order the AF26103 with custom packaging or private label? A: Yes. IXIN supports customized packaging, labeling and media specifications for distributors and private-label buyers. Contact our sales team with your requirements.
Q: What is the minimum order quantity (MOQ)? A: MOQ varies by customization level. Get in touch with us via WhatsApp or email for current MOQ and lead time on the AF26103 engine air filter.





