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Caterpillar original Replacement Fuel Injector 557-7633 387-9433 for C9 Engines, Cross Reference 10R-7222, 267-3360 for Excavator E330D E336D original new injector
| Brand Name: | CATERPILLA |
| Model Number: | 557-7633 |
| MOQ: | 1 |
| Price: | $299-$456 |
| Packaging Details: | Original Packing |
| Payment Terms: | T/T, Western Union |
Caterpillar 557-7633 fuel injector
,C9 engine replacement injector
,E330D E336D diesel injector
Caterpillar original Replacement Fuel Injector 557-7633 387-9433 for C9 Engines, Cross Reference 10R-7222, 267-3360 for Excavator E330D E336D original new injector
Fuel Type | Diesel |
Condition | Original New |
Applicable Engine | Caterpillar C9 |
Injector Type | Fuel Injector (HEUI – Hydraulic Electronic Unit Injection) |
Quality Standard | OEM-Level Engineering Standards |
Packaging | |
Fuel System | HEUI (Hydraulic Electronic Unit Injection) Fuel Delivery System |
OE Number | 557-7633 |
Brand | CAT (Caterpillar) |
Cross Number / Universal Number | 10R-7221, 20R-8968, 20R-8064, 387-9434, 293-4071, 328-2573, 267-9734 |
Vehicle / Equipment Application | CAT 330D / 330DL / 336D / 336DL / 336D2 / 340D / 340DL Excavators; CAT 950H / 966H / 972H Wheel Loaders; Industrial Power Units, Generator Sets, Marine Auxiliary Systems |
Application Type | Construction, Mining, Energy, Marine, Oil & Gas |
Engineered specifically for the Caterpillar C9 engine platform, the 557-7633 fuel injector is a precision-built, heavy-duty diesel component at the heart of the engine fuel delivery system. It provides accurate fuel metering, superior atomization, optimized combustion efficiency, reduced emissions, and maximum power output. Manufactured to OEM-level engineering standards with high-strength alloy steel components and precision-ground needle valves, this injector serves construction equipment, mining machinery, industrial power units, generator sets, and marine auxiliary engines worldwide.
Operating within a HEUI (Hydraulic Electronic Unit Injection) system, the injector converts hydraulic pressure into high-pressure fuel delivery under electronic ECM control, enabling multiple injection events per combustion cycle. The result is improved fuel economy, lower emissions, reduced combustion noise, and better cold-start performance. Each injector body is CNC-machined to micron-level tolerances, while the multi-hole nozzle enhances atomization and advanced surface treatment protects internal components against corrosion, ensuring long service life in severe-duty applications.
As a direct OEM replacement, the 557-7633 interchanges with 10R-7221, 20R-8968, 20R-8064, 387-9434, 293-4071, 328-2573, and 267-9734, fitting CAT 330D, 336D, and 340D series excavators, 950H, 966H, and 972H wheel loaders, plus generator sets, compressor packages, and oilfield equipment. For dependable operation, replace the O-rings and copper sealing washer during installation, torque to Caterpillar service manual specifications, then prime the fuel system and run an ECM diagnostic scan.
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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
