Fuel Injector A0040173021 0432131728 for Mercedes-Benz MK O 404 350 Tourismo Truck SK Setra Series 300 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: 0040173021, A 004 017 30 21, 004 017 30 21, 0 432 131 728, A0040173021 0432131728 Applications:Fit For Mercedes-Benz: MK, O 404, Tourismo, O 350, Setra Series 300 Fit For Mercedes-Benz Truck: SK