• Part Number: 10R-7221 (sometimes listed as 10R7221KSR)
• Condition: Remanufactured (Recon) – rebuilt to Caterpillar OEM standards
• Compatible Engines: Caterpillar C7 (used in trucks, buses, and construction equipment)
• Cross References: 2679716, 2934071, 3282574
• Function: High-pressure fuel delivery into combustion chambers for efficient performance
• Core Return Policy: Old injector must be returned to reclaim full deposit
The CAT 10R7221 is a remanufactured (Recon) fuel injector designed for Caterpillar C7 engines. The “KSR” suffix you mentioned typically refers to aftermarket or third‑party remanufacturers (such as King Star), who rebuild injectors to fit OEM specifications but are not genuine Cat® Reman parts.
10R3262DR CAT 10R3262 RECON INJECTOR 
