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SPM-HEP-4810 is the Bosch type CRIN solenoid common rail injector with a two stud terminal, a side high pressure inlet and two body O rings. It is used on Cummins QSC8.3 and ISC 8.3 engines. 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 Bosch 0445120272 and Cummins 5263305.
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 | Bosch 0445120272 |
| Injector type | Solenoid common rail (CRIN) |
| Engine | Cummins QSC8.3, ISC 8.3 |
| Cross references | Cummins 5263305 |
| Fits | the Cummins QSC8.3 and ISC 8.3 litre diesel engines, as fitted to Case and Komatsu machines |
| Condition | New, aftermarket |
| Stat. HS-Code | 840999 |
| Country of Manufacture | China |
Machines
Check the part number on your old unit before ordering.
| Bosch Part No.(SPM Part No.) | Fits |
|---|---|
| 0445120272 / Cummins 5263305(SPM-HEP-4810) | the Cummins QSC8.3 and ISC 8.3 litre diesel engines, as fitted to Case and Komatsu machines |
| Brand | Part No. |
|---|---|
| Bosch | 0445120272 |
| Cummins | 5263305 |
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 Cummins QSC8.3, ISC 8.3 litre diesel engines, as fitted to Case and Komatsu machines. 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 87.49 to 89.00 | 1 Nov 2026 |
| FridayParts | USD 123.89 | 1 Nov 2026 |
| DeedParts | USD 136.13 | 2 Nov 2026 |
| SINOCMP | USD 139.00 | 1 Nov 2026 |
| Buy Machinery Parts | USD 155.87 | 2 Nov 2026 |
| Yem Parts | USD 156.06 | 2 Nov 2026 |
| Spare Part Mart | USD 72.79 | Today |
Our price of USD 72.79 is 17% to 53% 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 Cummins QSC8.3, and 3 more listed under compatible equipment. Check the old fuel injector is marked 0445120272 or one of the cross references, because makers change parts between serial ranges.
On the Cummins QSC8.3, 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.
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.
Run a return leak test or read the injector balance rates with a diagnostic tool. On older mechanical engines, cracking each pipe in turn at idle shows which cylinder changes least.
No. It is an aftermarket fuel injector made to replace the Bosch 0445120272. 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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