Bosch 0445120369 is the Bosch type CRIN solenoid common rail injector with a black two stud solenoid cap, a polished steel body with a locating collar and O rings, and a slim nozzle. It is used on Cummins common rail engines. This aftermarket version is made to the same mounting and connections as the original, so it fits 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.
Technical properties & sizes
Specifications
| Part Type |
Common Rail Fuel Injector |
| Replaces |
Bosch 0445120369 |
| Injector type |
Solenoid common rail (CRIN) |
| Condition |
New, aftermarket |
| Stat. HS-Code |
840999 |
| Country of Manufacture |
China |
Part numbers
| Bosch Part No.(SPM Part No.)
|
|
0445120369(SPM-HEP-4893)
|
Applications & use cases
Rough running and misfire
A worn or sticking injector sprays unevenly: the engine knocks, misfires or idles rough. A cylinder cut-out test finds the bad one.
Smoke and fuel use
Black smoke and rising fuel use point to dribbling nozzles. Replace injectors before they wash the cylinder walls.
Hard starting
Leaking injectors bleed fuel pressure back and make the engine crank longer, especially when hot.
Fitting tips
Fit new copper washers and seals, clean the seat in the head, and torque the clamp to the engine maker's figure.
Price beat guarantee
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 88.36 to 132.20 |
1 Nov 2026 |
| SINOCMP |
USD 149.00 |
1 Nov 2026 |
| Fab Heavy Parts |
USD 278.21 |
1 Nov 2026 |
| Spare Part Mart |
USD 70.69 |
Today |
Our price of USD 70.69 is 20% to 75% 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.
Frequently asked questions
Will it replace my Bosch 0445120369?
Yes, it is a direct replacement for the Bosch 0445120369 with the same fitting.
How often should I replace the Bosch 0445120369?
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.
What are the signs the fuel injector needs replacing?
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.
What should I do before fitting it?
Clean the bore and seat of carbon, and keep the nozzle capped until it goes in. Torque the clamp to the engine manual, not by feel.
Does it need coding to the engine?
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.
Is this a genuine Bosch 0445120369?
No. It is an aftermarket fuel injector made to replace the Bosch 0445120369. It is not made by the original manufacturer; the number only shows what it replaces.