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Caterpillar original 321-0990 Common Rail Diesel Fuel Injector Replacement for OEM 10R-7668 for C6.6 Engine Excavator Tractor Spare Parts, compatible with multiple engine series original new injector
| Brand Name: | CATERPILLA |
| Model Number: | 321-0990 |
| MOQ: | 1 |
| Price: | $75-$168 |
| Packaging Details: | Original Packing |
| Payment Terms: | T/T, Western Union |
Caterpillar 321-0990 diesel fuel injector
,C6.6 engine excavator injector
,OEM 10R-7668 replacement injector
Caterpillar original 321-0990 Common Rail Diesel Fuel Injector Replacement for OEM 10R-7668 for C6.6 Engine Excavator Tractor Spare Parts, compatible with multiple engine series original new injector
Fuel Type | Diesel |
Condition | New, OEM Standard Replacement |
Applicable Engine | CAT C6 / C6.4 / C6.6; CAT 3126 / 3126B / 3126E; CAT C7 (certain configurations); CAT Industrial Power Units, Generator Engines, Marine Engines |
Injector Type | Electronically Controlled High Pressure Common Rail Diesel Injector |
Quality Standard | Manufactured to Strict OEM Specifications |
Packaging | — |
Fuel System | High Pressure Common Rail Fuel Injection System |
OE Number | 321-0990 / 3210990 |
Brand | Caterpillar (CAT) |
Cross Number / Universal Number | 10R-7220 / 10R7220, 326-1641 / 3261641, 326-1642 / 3261642, 387-9433 / 3879433, 2645A746, 2645A747, 320-0680 / 3200680, 320-0677 / 3200677, 295-1411 / 2951411 |
Vehicle / Equipment Application | Hydraulic Excavators, Wheel Loaders, Backhoe Loaders, Bulldozers, Soil Compactors, Road Rollers, Motor Graders, Skid Steer Loaders, Generator Sets, Marine Equipment |
Application Type | Industrial Diesel Engine – Construction, Mining, Marine, Agricultural and Power Generation Applications |
Built for the demanding world of heavy-duty diesel power, the Caterpillar 321-0990 fuel injector is an electronically controlled common rail injector engineered to OEM specifications for CAT C6 series engines, including the C6.4 and C6.6 platforms. As a core component of the high-pressure fuel injection system, it receives precise signals from the Electronic Control Module (ECM) to deliver accurate fuel metering, optimized spray atomization, and consistent combustion under the harshest operating conditions.
Every 321-0990 injector is manufactured to industrial-grade standards. The nozzle assembly is machined with micron-level precision, while the hardened alloy steel body withstands injection pressures exceeding 1800 bar. A protective surface treatment guards against fuel contamination, moisture, oxidation, and sulfur corrosion, and the injector operates reliably across a wide temperature range from -40°C to +120°C. Under proper maintenance conditions, operators can expect a service life of 5,000 to 10,000 operating hours, minimizing downtime and replacement frequency.
The result is measurable value for fleet operators: improved fuel efficiency, reduced exhaust emissions, enhanced torque and horsepower output, reliable cold starting, and lower overall operating costs—all matching original Caterpillar performance requirements. The 321-0990 serves as a direct replacement for 10R-7220 and cross-references 326-1641, 326-1642, 387-9433, 2645A746, 2645A747, 320-0680, 320-0677, and 295-1411. It is widely applied in hydraulic excavators, wheel loaders, bulldozers, motor graders, generator sets, industrial power units, and marine engines worldwide.
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Contact Detail:
ADD:Huangpu Machinery City, No.585-A, No.138, Southeast Road, Huangpu District, Guangzhou City,
Guangdong Province Tel:+86 020 88557755
Cellphone:+86 19959162250 WhatsApp:+86 19959162250
Email:2209396088@qq.com
