Fuel Injector A0040172821 0432131727 for Mercedes-Benz Engine OM 446 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: A0040172821, 0432131727, 40172821, 0 432 131 727, 0040172821, 0 040 172 821 Specification: Matching DLLA142P417 Nozzle Fit For Mercedes-Benz Engine: OM 446.920(422)