Quick Answer: 8N-2556 is a Caterpillar secondary engine air filter cross referenced with Donaldson P523048 and Fleetguard AF4874.
| Jinguan model | 8N-2556 | P523048 / AF4874 |
| OE reference | Caterpillar 8N-2556 Secondary Air Filter |
| Filter type | Secondary / safety engine air filter |
| Outer diameter | 324.61 mm / 12.78 in |
| Inner diameter | 257.56 mm / 10.14 in |
| Length | 249.17 mm / 9.81 in |
| Filter type | Secondary / safety air filter element |
| Use with | Caterpillar 8N-6309 primary element in common service sets |
Cross references are for identification only. Confirm final fitment by OE number, dimensions, filter photo or sample.
| Jinguan | Use 8N-2556 for quotation confirmation |
| Caterpillar | 8N-2556, 8N2556, 1131579 |
| Donaldson | P143022, P523048 |
| Fleetguard | AF4874, AF4874Q |
| Baldwin | PA2848, PA3933 |
| Luberfiner | LAF3048 |
| WIX | 46815 |
| Sakura | A-5533 |
These questions are written for buyers who search by OE number, old filter number, dimensions, equipment model or cross reference before sending an inquiry.
8N-2556 is a Caterpillar secondary / safety engine air filter cross referenced with Donaldson P523048 / P143022 and Fleetguard AF4874 / AF4874Q.
Typical applications include Caterpillar 3508, 3512, 3516, C18, C27, C32, G3408, G3412, G3508, G3512 and G3516 engine service demand.
Reference dimensions list OD 324.61 mm, ID 257.56 mm and length 249.17 mm. Confirm whether the buyer needs only 8N-2556 or the full primary / secondary set.
Send OE number, equipment model, old filter photo and quantity. Jinguan will confirm the right replacement before quotation.
Tel：8615030877930
Email：jinguan@jgautofilter.com
Web：www.jgautofilter.com
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