The 4101432 Cummins ISX15 Injector Camshaft is engineered for heavy-duty performance. Its induction-hardened lobes resist flattening and pitting. Fits CM870/CM871 engines.
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The Cummins 4101432 (Replacement for 4298626) is the Injector Camshaft for ISX15 and QSX15 engines.
Manufactured from hardened steel to prevent lobe flattening, it fits heavy-duty trucks including Peterbilt and Kenworth.
In stock for global export.
Premature lobe wear is a known issue with the ISX platform. Our replacement camshafts feature deep induction hardening on all lobes and journals to resist surface fatigue and “flattening.” Whether you are running a CM870, CM871, or newer generation engine, our camshafts provide the metallurgical strength required to keep your rig on the road and minimize downtime.
| Specification | Value |
|---|---|
| Product Type | Camshaft |
| Cam Position | Injector Camshaft (Not Valve Cam) |
| Engine Model | Cummins ISX15 / QSX15 |
| Material | Induction Hardened Steel |
| Hardness Depth | OEM Specification (Deep Case) |
| Lobe Diameter | Standard OEM Size |
| OEM Reference | 4101432, 4298626, 4059331 |
| Cross Reference | ISX Injector Cam, CM871 Camshaft |
| Typical Applications | Peterbilt 379, Kenworth W900 |
| Engine Model | Application Field | Typical Equipment Brands & Models |
|---|---|---|
| Cummins ISX15 (CM870/871) | On-Highway Trucking | Kenworth W900 / T800, Peterbilt 379 / 389, Volvo VNL Series |
| Cummins QSX15 | Industrial / Agriculture | Versatile Tractors (435, 485), Mining Excavators, Power Generators |
| Cummins ISX (EGR Models) | Heavy Haul | International ProStar / LoneStar, Freightliner Cascadia |
Ruich Value supplies a dedicated range of Cummins engine parts, including new aftermarket and remanufactured replacements. Our coverage includes popular engine families such as the 6BT/6BTA, 4BT, ISB, ISX, and NT855 series. For a complete catalog of our Cummins camshafts and valvetrain components, please contact our sales team.
| Model | Main PN | Cro. Ref. PN | Engine Model | Application |
|---|---|---|---|---|
| V28 | 4073134 | 3070838, 3053525, 3801308, C3970366 | V28 Series (V12) | Heavy-duty Mining (Terex), Marine, Large Gensets |
| NH220 | 3801114 | 3044767, 3042568, 111888 | NH220 / NT855 Small Cam | Classic Heavy Trucks, Early Generators, Construction Machinery |
| V903 | 199180 | 3070838, 3053525 | V903 / VT903 Series | Agricultural Machinery, Drilling Rigs, Military |
| NT855 | 3801030 | 3044767, 3047452, 3801749 | NT855 Big Cam | Heavy-duty Trucks, Mining (Komatsu), Power Generation |
| 4BT | 3929039 | 3925582, 3929038, 3929885 | 4BT Series (3.9L) | Light Trucks, Skid Steer Loaders, Pumping Units |
| 6BT | 3949042 | 3929886, 3907824, 3914639, 3929041, 3283179 | 6BT Series (12-Valve) | Dodge Ram, Freightliner, Agricultural Tractors |
| 6CT | 3934168 | 3914640, 3923478, 3917882, 3929734, 3924471, 3356593 (Kit) | 6CT Series (8.3L) | City Buses, Construction Cranes, Graders |
| ISB6.7 | 3979506 | 3954099, 3976620, 3966431, 3966430 | ISB6.7 / QSB6.7 Series | School Buses (Blue Bird), Delivery Trucks (Paccar) |
| L10 | 3801110 | 3803528, 3049024, 3065891 | L10 Series | Vocational Trucks, Garbage Trucks, Transit Buses |
| M11 | 3803703 | 3084568, 3417765, 3804300 | M11 / ISM11 Series | Heavy-duty Fleet Trucks, Cement Mixers |
| N14 | 3803555 | 3066892, 3417766, 3803965 | N14 Select / Plus | Class 8 Over-the-Road Trucks (Peterbilt, Volvo) |
| K19 | 3066877 | 3066881, 3076767 | K19 / KTA19 Series | Mining Excavators, Marine Propulsion, Industrial |
| K38 | 3066884 | 3020613, 3066882 | K38 Series (V12) | High-Horsepower Generators, Mining Trucks |
| K50 | 3066291 | 3066292, 3076769 | K50 Series (V16) | Marine Vessels, Extra-Large Mining Equipment |
| ISX15 | 4101432 | 4298626, 4089371, 4954905 | ISX / QSX15 (Signature) | Highway Trucks, Freight Transportation |
| ISF 2.8 | 5267994 | 5267994 (Standard) | ISF 2.8 Series | Foton Tunland, JAC Trucks, Light Vans |
| ISF 3.8 | 4995830 | 4995830 (Standard) | ISF 3.8 Series | Medium Duty Trucks, Foton Aumark |
Part number 4101432 (and 4298626) is the **Injector Camshaft**. The ISX15 engine uses a Dual Overhead Cam (DOHC) design. The Injector cam is larger and handles the high-pressure fuel injection loads, while the smaller Valve cam operates the intake and exhaust valves. Please verify which one you need before ordering.
The primary cause of camshaft failure in ISX engines is the failure of the rocker arm rollers. When a roller bearing seizes, it stops rolling and slides against the cam lobe, grinding it flat in a very short time. We strongly recommend inspecting or replacing the rocker arms when installing a new camshaft.
Given the extreme pressures of the ISX unit injection system, our camshafts are manufactured from high-grade steel and undergo deep induction hardening on the lobes. This ensures the surface can withstand the high Hertzian contact stress without pitting or spalling, provided proper lubrication is maintained.
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