Cummins QSB6.7 Common-Rail Fuel Injector (Cummins 5303101) | Bosch 0445120356 New
This is the genuine Bosch 0445120356, a new common-rail fuel injector, not a rebuild. It is the Bosch number for Cummins injector 5303101, which catalogs list for the six-cylinder Cummins QSB6.7. Match it by the Cummins number for your engine serial number or by the Bosch number on the injector body.
The QSB6.7 takes more than one Bosch injector, depending on the build, and they look alike. A miss, hard starting, white smoke, fuel dilution or a rail pressure fault can point at an injector, but check fuel supply, filters and the rail relief valve first.
Confirm Fitment Before You Order
The QSB6.7 takes different injectors on different builds. We list Bosch 0445120231 (Cummins 5263262), 0445120251 (Cummins 5263314) and 0445124019 (Cummins 5289266) on their own pages. Order this one only when your engine calls for Cummins 5303101 or the old injector reads Bosch 0445120356. Send us the engine serial number (ESN) and CPL from the data plate and we will check it before it goes out. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 0445120356 |
| Brand | Bosch |
| Condition | New, genuine, in original packaging |
| Warranty | Bosch limited warranty, parts only. Call us and we handle the claim. |
| Type | Common-rail fuel injector, solenoid |
| Engine | Cummins QSB6.7, six cylinder |
| Cummins number | 5303101 |
| Shipping weight | 2 lb |
Fits / Applications
- Cummins QSB6.7 engines that list injector 5303101
- Match by engine serial number (ESN) and CPL, not by engine size alone
The high-pressure connector tube is a separate part. Inspect it and replace it if the tip is worn or marked. Fit new sealing washers and O-rings, and torque the connector tube nut to the Cummins figure for your engine. Change the fuel filters when you replace injectors.
Part Numbers & Cross Reference
Bosch 0445120356 · Cummins 5303101
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
Which Cummins engine does the Bosch 0445120356 fit?
Catalogs list it for the six-cylinder Cummins QSB6.7, on engines that call for Cummins injector 5303101. Call 530-668-0818 with your engine serial number and CPL and we will confirm it against your engine before you order.
Is it the same as the other QSB6.7 injectors you list?
It has its own Bosch and Cummins numbers. Other QSB6.7 builds take Bosch 0445120231, 0445120251 or 0445124019. Order by the number on your old injector or by engine serial number.
Will it fit a Ram pickup with the 6.7L Cummins?
We have no catalog that lists it for a Ram pickup. The pickup injectors carry other Bosch numbers, so order by the number on your old injector.
Is the 0445120356 new or remanufactured?
It is a new, genuine Bosch injector. It crosses to Cummins 5303101.
Related Parts
- Or have yours tested and rebuilt: Common Rail Diesel Injector Testing & Rebuild Service
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.
Not sure the injectors are the problem? We test and diagnose in-house before you buy. See our common rail injector testing and rebuild service.
UPS to all 50 states, including Alaska and Hawaii. Your rate shows at checkout. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax is additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
Reviews
There are no reviews yet.