4 Pieces Fuel Injector 4955575 for Cummins Engine B3.3 Condition: New Aftermarket Part Note: We recommend replacing the entire set of fuel injectors to ensure the engine's optimal performance. Due to differences in oil output and atomization concentration between and aftermarket parts, they should not be mixed. Replacing the entire set of injectors helps avoid potential issues.Replacement Part Number: 4955575 Applications:Fit For Cummins Engine: B3.3