Engine Spares
Cummins fuel injector
Injectors for Cummins diesel engines. Injector numbers are superseded fairly often, so we cross-check the number on the old unit before quoting rather than going by engine model alone.

What to send us
The number stamped on the old part is the quickest route. If it has worn off, the engine or genset model and serial number usually gets us there. Photos help more than descriptions.
We cross-check whatever you send against the OEM catalogue and confirm the match with you before anything ships.
About this range
An injector that is not atomising properly shows itself before it fails outright. The usual signs are a rough idle, a misfire under load, white smoke from unburnt diesel leaving the exhaust, harder starting from cold, and fuel consumption that has crept up without the work changing.
What the symptoms will not tell you is which injector. A rough idle with white smoke can be one bad unit or four, and the only way to be certain is a cylinder cut-out test on the engine or a bench test of the injector itself for spray pattern and opening pressure.
Injector part numbers supersede more often than most parts on the engine, and a number that was current five years ago may now be filled by a different one. We check the number off the old injector against the OEM catalogue rather than quoting from the engine model, because one engine model can take more than one injector depending on the build.
Products in this category
20 listed
Open one for its specification and the part numbers it covers. We stock more than we list, so send us the number even if yours isn’t here. You can also look a number up in the part number index.

Cummins QSK19 / QSK30 / QSK38 injector
- 4964171
- 2882079
- 2867149

Cummins NTA855 Big Cam barrel and plunger 3045963
- 3045963
- 3047054
- 3022368

Cummins STC injector 3095773
- 3095773
- 3349860
- 3349861
- +1 more

Cummins NT855 BC injector set
View part
Cummins KT38 injector 3609962
- 3609962

Cummins QSL injector 4384786
- 4384786

Cummins QSN14 / M11 fuel injector
View part
Cummins fuel injector for generator sets
View part
Cummins injector cup 3012536
- 3001314
- 3005963
- 3012536
- +2 more

Cummins common rail injector 5306050
- 5306050

Cummins QSB6.7 injector 0445120231
- 0445120231
- 4942359

Cummins QSC8.9 injector 4359204
- 4359204

Cummins N14 PC nozzle 4058947
- 4058947

Cummins NH injector sleeve 202605
- 202605

Cummins NT injector sleeve 3011934
- 3011934

Cummins barrel and plunger assembly 3077526
- 3077526

Cummins injector repair kit 3880783
- 3880783
- 3054532

Cummins injector and pump repair
View part
Cummins barrel and plunger kit 3238196
- 3238196

Cummins injector repair kit for M11, N14 and L10
- 3060001
- 1211594
Worth reading first
More in engine spares
6 of 17

Cummins engine spares
27The parts that go inside or bolt onto the engine itself. Send the engine model along with the number stamped on the part you're replacing.
View parts
Fuel pump
45Fuel pumps and pump assemblies for diesel engines and gensets. Send the pump's own number as well as the engine model, since one engine can take more than one pump variant.
View parts
Water pump
19Coolant pumps for diesel engines. A failing pump usually shows up as coolant loss or overheating. Send the number cast into the old pump housing and we'll match it.
View parts
Piston, liner & ring kit
12Pistons, liners, ring sets, cylinder heads and the LPR kits that bundle them. Tell us the engine model and bore size, and whether you need standard or oversize.
View parts
Engine gasket set
7Top sets, full sets, tappet cover gaskets and valve seat inserts. Say which job you're doing and we'll list what goes with it.
View parts
Belt & tensioner
10V-ribbed and fan belts, tensioners and tensioner shock absorbers. Measure the old belt or send its number and we'll match it.
View parts
