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Kato 889-30539002 is the high pressure sensor for the main hydraulic pump, with a threaded steel body and O ring, a sleeved twin lead and a grey two pin plug. It is used on Kato HD820 excavators. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Main Pump Pressure Sensor |
| Replaces | Kato 889-30539002 |
| Machine | Kato HD820-1, HD820-2, HD820-3 |
| Position | Main hydraulic pump |
| Fits | Kato HD820-1, HD820-2 and HD820-3 excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 903289 |
| Country of Manufacture | China |
Kato machines
Check the part number on your old unit before ordering.
| Kato Part No.(SPM Part No.) | Fits |
|---|---|
| 889-30539002(SPM-HEP-4698) | Kato HD820-1, HD820-2 and HD820-3 excavators |
Wrong or missing reading
A failed sensor gives a dead or false gauge reading or a warning light.
Fault codes
Check the wiring and plug first; if the sensor itself reads out of range, replace it.
Corrosion
Connectors on machines take water and dirt. A corroded sensor is cheaper to replace than to chase.
Fleet spares
Common sensors are worth keeping in stock for each machine type.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay, aftermarket seller | USD 69.95 | 31 Oct 2026 |
| Amoparts | USD 102.16 | 31 Oct 2026 |
| SINOCMP | USD 119.00 | 31 Oct 2026 |
| FridayParts | USD 119.19 | 31 Oct 2026 |
| WDPart | USD 127.50 | 31 Oct 2026 |
| Buy Machinery | USD 137.59 | 31 Oct 2026 |
| MyMROmarts | USD 166.80 | 31 Oct 2026 |
| Spare Part Mart | USD 56.80 | Today |
Our price of USD 56.80 is 19% to 66% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes, it was made for the Kato HD820-1, and 2 more listed under compatible equipment. Check the old sensor is marked 889-30539002 or one of the cross references, because makers change parts between serial ranges.
On the Kato HD820-1, there is no fixed interval. It is changed when it fails, and many fail from water in the plug or chafed wiring rather than wear.
A fault code for this circuit, readings that jump or stay fixed, or a part that does not respond with power at the plug.
Usually. Clear them after fitting and run the machine, so old codes are not mistaken for a new fault.
A little dielectric grease keeps water out of the plug on machines that work outside. Make sure the terminals are clean and tight first.
No. It is an aftermarket sensor made to replace the Kato 889-30539002. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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