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Caterpillar 3E5370 is the control temperature sensor: a stainless hex body with a fine probe on the threaded tip and a sleeved lead to a round grey plug. It is used on Caterpillar 325 and 330 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 | Control Temperature Sensor |
| Replaces | Caterpillar 3E5370 |
| Signal | PWM, 24 V |
| Connector | Round plug on a sleeved lead |
| Fits | Caterpillar 325, 330, 350 and 375 excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 903289 |
| Country of Manufacture | China |
Caterpillar machines
Check the part number on your old unit before ordering.
| Caterpillar Part No.(SPM Part No.) | Fits |
|---|---|
| 3E5370(SPM-HEP-4641) | Caterpillar 325, 330, 350 and 375 excavators |
| 3E-5370(SPM-HEP-4641) | Caterpillar 325, 330, 350 and 375 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 (4 aftermarket sellers) | USD 46.87 to 51.05 | 31 Oct 2026 |
| GT Engine Parts | USD 102.85 | 1 Nov 2026 |
| AmoParts | USD 114.34 | 1 Nov 2026 |
| WDPart | USD 118.00 | 1 Nov 2026 |
| FridayParts | USD 127.05 | 31 Oct 2026 |
| MyMROmarts | USD 179.85 | 1 Nov 2026 |
| Spare Part Mart | USD 37.87 | Today |
Our price of USD 37.87 is 19% to 79% 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 Caterpillar 325, and 3 more listed under compatible equipment. Check the old sensor is marked 3E5370 or one of the cross references, because makers change parts between serial ranges.
On the Caterpillar 325, 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.
A little dielectric grease keeps water out of the plug on machines that work outside. Make sure the terminals are clean and tight first.
Usually. Clear them after fitting and run the machine, so old codes are not mistaken for a new fault.
No. It is an aftermarket sensor made to replace the Caterpillar 3E5370. 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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