Remanufactured Cummins X12 Injectors

The Cummins X12 is the lightest heavy-duty diesel engine in its class, purpose-built for vocational, regional-haul, and medium-duty applications where weight savings translate directly into payload and fuel savings. HD Injectors’ remanufactured Cummins X12 fuel injectors restore factory combustion performance at a fraction of new OEM cost, ideal for fleet operators and independent owner-operators managing total cost of ownership.

Cummins X12 Injector Applications

Our X12 injectors serve vocational trucks, refuse trucks, regional tractors, and medium-duty Class 7 and Class 8 applications running the 10.8L X12 platform.

Why HD Injectors for Cummins X12 Injector Replacement

• Budget-friendly remanufactured pricing vs. new OEM
• Eliminate engine knocking from worn needle and seat assemblies
• Reduce smoke and unscheduled aftertreatment regens
• Regain lost fuel economy, essential on vocational and regional duty cycles
• OEM-spec flow calibration on every unit

Our Rebuild Standard

Cummins X12 injectors are fully disassembled, ultrasonically cleaned, inspected, and rebuilt with OEM-spec components. Each unit is flow-tested, pressure-tested, and leak-tested before shipping.

Order Your Cummins X12 Injectors Today

Shop our remanufactured Cummins X12 injectors and put factory-calibrated fuel delivery back in your truck. Not sure if the X12 injector you’re looking at matches your engine configuration? Submit our Make Sure It Fits form with your VIN and engine serial, we’ll verify compatibility and confirm the correct part number before your order is placed.

Cummins X12 Injector Frequently Asked Questions