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SPM-HEP-4875 is the Denso type electronic common rail injector with a side connector, a black cast body with a threaded side high pressure inlet and a slim nozzle. It is used on Kubota KX057-4 and U55-4 excavators. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
It replaces Denso 295050-1340, Kubota 1J706-53073, Kubota 1J706-53050 and Kubota 1J706-53052.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Common Rail Fuel Injector |
| Replaces | Denso 295050-1340 |
| Injector type | Electronic common rail |
| Machine | Kubota KX057-4, KX057-4CA, U55-4, U55-4CA |
| Cross references | Kubota 1J706-53073, Kubota 1J706-53050, Kubota 1J706-53052 |
| Fits | the Kubota KX057-4, KX057-4CA, U55-4 and U55-4CA mini excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 840999 |
| Country of Manufacture | China |
Machines
Check the part number on your old unit before ordering.
| Denso Part No.(SPM Part No.) | Fits |
|---|---|
| 295050-1340 / Kubota 1J706-53073 / Kubota 1J706-53050 / Kubota 1J706-53052(SPM-HEP-4875) | the Kubota KX057-4, KX057-4CA, U55-4 and U55-4CA mini excavators |
| Brand | Part No. |
|---|---|
| Denso | 295050-1340 |
| Kubota | 1J706-53073 |
| Kubota | 1J706-53050 |
| Kubota | 1J706-53052 |
All of these numbers are the same part.
What it does
A common rail injector opens electrically several times per combustion stroke, spraying fuel at very high pressure. Its timing and flow are set by the engine controller using the trim code on its body.
Where it is used
Made for the Kubota KX057-4, KX057-4CA, U55-4 and U55-4CA mini excavators. The full list is in the tables above.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (6 aftermarket sellers) | USD 239.49 to 259.91 | 1 Nov 2026 |
| SINOCMP | USD 292.50 | 1 Nov 2026 |
| KuduParts | USD 399.90 | 1 Nov 2026 |
| Buy Machinery | USD 451.61 | 1 Nov 2026 |
| Spare Part Mart | USD 191.59 | Today |
Our price of USD 191.59 is 20% to 58% 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 Kubota KX057-4, and 3 more listed under compatible equipment. Check the old fuel injector is marked 295050-1340 or one of the cross references, because makers change parts between serial ranges.
On the Kubota KX057-4, often 5,000 to 10,000 hours, but much less on poor or wet fuel. Injectors are usually changed when they fail a test, not by hours.
Black or white smoke, a misfire or knock on one cylinder, hard starting, higher fuel use, or a high return leak or balance rate on test.
Most common rail injectors carry a trim code (QR or IMA) printed on the body. Enter it with a diagnostic tool after fitting, or the engine runs rough and smokes.
Always. Fit a new copper washer and O-rings under every injector you remove. A reused washer leaks combustion gas and carbon packs the bore.
No. It is an aftermarket fuel injector made to replace the Denso 295050-1340. 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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