Description
MB4C –
AFA 3036933 is an aftermarket cam follower roller used in the valve cam follower assembly on select Cummins 855-series engines. Parts catalogs identify 3036933 as the valve-side cam follower roller, while 3081248 is commonly listed separately as the injector roller on Big Cam applications.
Common applications include:
- Cummins NT855
- Cummins NTA855
- Cummins Big Cam 855
- Certain NH/NT and industrial 855 applications
- Some listings also show compatibility with certain N14 applications, so ESN/CPL verification is smart before sale.


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