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Air filter for Caterpillar FS131AB
This air filter is a direct replacement part developed for Caterpillar FS131AB. It is built to OEM dimensional specification, so it installs in the original position without any modification to the surrounding assembly.
Part number / cross reference
OEM and interchange reference: CA-839 | 600-185-2100 | 600-185-2120 | 131-8902 | 82981152 | 4110000697002.600-185-2110 | B222100000500 | KAH14840 | AF25485 | AF25352 | AF25558 | 4486002 | P772580 | P828889 | XB75W9-XC204-030100-00 | KS864A | P829333 | 87682993
Use the number from your parts book to confirm interchangeability. If your number is not listed, send it to us — we cross-check against the parts manual and confirm in writing before you pay, because a wrong part costs far more in freight and downtime than the part itself.
Compatible machines
FS131AB, PC110-7, PC120-7, PC128UU, PC120-8EO, PC120-8AC, PC120-11, PC120-8, PC128-8, PC130-7, PC128US, PC138UU, E311B, E311CU, E312B, E313CU, E312C, E312D, E313C, E312D2GC and more
Fitment can change on a serial-number break within the same model. Send us the model and serial number from the machine nameplate and we verify it against the parts manual before dispatch.
Why this part fails — and what we do differently
Filtration efficiency is where a cheap air filter quietly costs you an engine. We build this element with multi-layer composite media, resin-impregnated end caps and a nitrile gasket, so the pleats hold their geometry under a cold-start viscosity spike instead of collapsing and letting unfiltered oil bypass the media.
Ordering, packing and warranty
Single pieces ship for urgent breakdowns; consolidated container or air freight is available for stock orders. Each part is packed individually in a carton with the part number labelled, and we send photographs of the actual goods plus a measurement report before shipment. Warranty: 6–12 months against manufacturing defect under normal operating conditions.
