321-0990: Caterpillar Common Rail Fuel Injector 321-0990 | Reman 10R-7668 Delphi 2645A743 for CAT C6.6 – Fits 320D 323D

321-0990: Caterpillar Common Rail Fuel Injector 321-0990 | Reman 10R-7668 Delphi 2645A743 for CAT C6.6 – Fits 320D 323D

This common rail fuel injector is a high-quality aftermarket replacement for Caterpillar C6.6 diesel engines (Perkins-based CAT/Perkins platforms). It replaces OE part number 321-0990, cross-referenced to the Cat Reman number 10R-7668, the Delphi code 2645A743 and 276-8290. Each injector is built to OEM specification with a precision-machined nozzle, delivering accurate injection timing, atomization and metering for clean starting, smooth idle, consistent power and lower fuel consumption. High-grade steel components and hardened valve seats withstand sustained common rail pressure, with sealing surfaces and electrical connections matching the original design for a leak-free, bolt-on fit. Every injector is flow- and leak-tested before shipment. Fits Caterpillar hydraulic excavators (320D, 323D) powered by C6.6 engines. Export-packed, 12-month warranty and responsive technical support. Aftermarket replacement part — not a genuine Caterpillar product. "Caterpillar" and "CAT" are trademarks of their respective owners, used for reference only.

We are a professional manufacturing factory dedicated to diesel engine spare parts. Our core product line covers diesel fuel injectors, injector nozzles, fuel injection pumps and complete injector repair kits. Backed by steady in-house stock, rigorous quality inspection and direct factory pricing, we partner with global wholesalers, maintenance workshops and machinery enterprises. We deliver premium reliable spare parts, fast lead time and all-round one-stop export service. We warmly welcome your inquiries and long-term business cooperation.