Iseki GEAS AT23-AT33 filters replacement
Iseki GEAS AT23-AT33 filters replacement: air, fuel, oil and hydraulic
Cleaning and replacing filters on time is the simplest maintenance you can do on your Iseki GEAS AT — and it prevents a lot of costly trouble down the line. Below we've listed all the filters from the factory manual, along with the corresponding Shop4trac products and, where relevant, an honest note about the exact fit per model.
Suitable for the entire series: Iseki GEAS AT23, AT25, AT27, AT30, AT33, AT27N and AT33N.
Iseki GEAS AT23-AT33 air filter
The air filter element should be cleaned every 100 hours and replaced every 600 hours or once a year — whichever comes first. Do you work a lot in dusty conditions, for example when tilling dry soil? Clean it more often in that case.
| Filter | Action | Interval |
|---|---|---|
| Air filter element | Clean | Every 100 hours |
| Air filter element | Replace | Every 600 hours or 1x/year |
Shop4trac product: Air filter Iseki GEAS TG | Hinomoto | Mitsubishi (SKU-20009). This filter explicitly lists the AT23, AT25, AT27, AT30 and AT33 in the fitment list — so the fit is fully confirmed for the entire range.
Iseki GEAS AT23-AT33 fuel filter
The fuel filter should be cleaned every 100 hours and replaced every 400 hours. Why does this matter? A clogged fuel filter is one of the most common causes of irregular idling or an engine that runs jerkily.
| Filter | Action | Interval |
|---|---|---|
| Fuel filter | Clean | Every 100 hours |
| Fuel filter | Replace | Every 400 hours |
Shop4trac product: Fuel filter Iseki SG | SXG | TM3267 (SKU-150014). This filter is matched to engine code E3CD — the same engine used throughout the entire AT series — but it isn't listed separately by AT model name in the fitment list. If in doubt, check the dimensions before ordering.
Iseki GEAS AT23-AT33 engine oil filter
The engine oil filter should be replaced every 200 hours, at the same time as the engine oil.
| Filter | Action | Interval |
|---|---|---|
| Engine oil filter | Replace | Every 200 hours |
Shop4trac product: Engine oil filter Iseki TM | TH | SXG | SF (SKU-002/6). This filter is also matched to engine code E3CD/E3CE, and here too: it isn't listed separately by AT model name, so if in doubt, compare the dimensions.
Iseki GEAS AT23-AT33 hydraulic and transmission oil filter
The AT series uses a single oil circuit for the transmission housing, the lift mechanism, and the power steering (35 liters of Iseki U.T.H Oil). The corresponding filter should be replaced every 200 hours, at the same time as the engine oil filter service.
| Filter | Action | Interval |
|---|---|---|
| Hydraulic/transmission oil filter | Replace | Every 200 hours |
Shop4trac product: Hydraulic filter Iseki TH | TF | TG GEAS | MF 1529 – 1552 (SKU-250011). This filter explicitly lists "AT25, NTA25" in the fitment list, so the fit is confirmed for the AT25. The other AT models presumably share the same transmission and hydraulic unit and therefore the same filter (dimensions: 202 mm height, 113 mm diameter, 1"1/4-12UNF thread), but this hasn't been confirmed separately per model. Want to be sure it fits your AT23, AT27, AT30 or AT33? Feel free to contact Shop4trac.
Not sure which filter you need? Simply compare the physical dimensions of the old filter with those of the new one, or ask Shop4trac — that's always faster and more reliable than guessing.
