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Caterpillar 238-0118 is the engine oil pressure sensor with a threaded steel body and a three pin sealed plug. It is used on Caterpillar C6.4 engines. 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 | Oil Pressure Sensor |
| Replaces | Caterpillar 238-0118 |
| Fits | Caterpillar C4.2 and C6.4 engines, including 312D 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 |
|---|---|
| 238-0118(SPM-HEP-4496) | Caterpillar C4.2 and C6.4 engines, including 312D 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 (2 aftermarket sellers) | USD 24.11 | 30 Oct 2026 |
| FridayParts | USD 25.32 | 30 Oct 2026 |
| WDPart | USD 42.00 | 3 Nov 2026 |
| Diselmart | USD 48.90 | 3 Nov 2026 |
| SINOCMP | USD 49.00 | 30 Oct 2026 |
| Spare Part Mart | USD 19.60 | Today |
Our price of USD 19.60 is 19% to 60% 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 C4.2, and 2 more listed under compatible equipment. Check the old sensor is marked 238-0118 or one of the cross references, because makers change parts between serial ranges.
On the Caterpillar C4.2, 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.
Read the fault codes, then check the plug and wiring for corrosion or a broken wire. A wiring fault reads the same as a failed sensor.
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 Caterpillar 238-0118. 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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