The risk of using non-genuine
Competitive part manufacturers may try to reverse engineer Cummins parts and build something that will fit like an original part at a cheaper price. Using non-genuine parts which don't meet critical engineering design specifications can impact:
- Engine Performance
- Fuel Economy
- Reliability
- Durability
- Uptime
- Warranty
Non-genuine put to the test
Cummins Engineers conducted lab analysis and destructive testing on over 300 nongenuine overhaul kit components for Cummins on highway engines, including pistons, piston rings, piston pins, cylinder liners, main bearings, connecting rod bearings, head gaskets and injectors. Of the over 300 non-genuine parts tested, none met all of Cummins Design Specifications.
The genuine difference
Heavy-duty applications
To view the results of our lab testing on heavy duty non-genuine parts for the on-highway market, click here to see the brochure.
Non-genuine part inspection results
| Part tested | Dimensional testing | Material testing |
|---|---|---|
| Piston | FAILED | FAILED |
| Oil ring | FAILED | FAILED |
| Retaining ring | FAILED | ADEQUATE |
| Piston pin | FAILED | FAILED |
| Cylinder liner | FAILED | FAILED |
| Connecting rod bearing | FAILED | FAILED |
| Main bearing | FAILED | FAILED |
| Thrust bearing | FAILED | FAILED |
| Cylinder head gasket | FAILED | FAILED |
| Injector | FAILED | FAILED |
Of the over 300 non-genuine parts tested, none met all of Cummins Design Specifications, and most failed in both the dimensional and material testing categories. Test results marked as “adequate” marginally met Cummins design intent, indicating that it loosely met some of Cummins design specifications, but not all of them.
Saving a little time upfront could ultimately cost you:
Early life failure
Additional fuel cost
Downtime
Progressive damage to aftertreatment
Non-warranty repair cost
Catastrophic failure
Buy Genuine Cummins parts and accessories
Shop now at shop.cummins.com for Genuine Cummins Parts, Onan products, Fleetguard Filters
& Coolant, Valvoline Oil, Webasto Heaters, Power Service Fuel Additives, Maintenance Kits and
many other products.
Currently only available for the United States and Canada.
