Perkins 26510289 Air Filter

Size & fit — it’s large: roughly 406 mm tall, 282 mm OD, 170 mm ID. That’s your key for fit-checking. If the housing matches, this filter drops in and seals solid—just clean the gasket area and seat it well.

Why it’s widely used — this is the go-to primary element in heavy-duty gensets and industrial engines where airflow needs to stay clean under extended runtime. It traps grit and dust reliably, and sizing gives plenty of media before restriction sets in.

Fleet-friendly option — fits where you’d use Donaldson P181046, Baldwin PA1885 / PA1885XP, or Fleetguard AF424. Makes stocking easier when you’re juggling multiple equipment types.

Installer tip — flip the filter upright, inspect for crush folds or dented pleats, then seat gently but securely. Don’t tap, don’t blow it out—replace on schedule and log service hours. Over-reusing just sends dust downstream.