Vehicle Compatibility

• Brand: Caterpillar (CAT), as supplied

• Engine Models: 3064, 3066, S4KT, S6KT

• Equipment Model: 320B Excavator

• Fuel Injector Part Numbers: 5I-7706, 5I7706

Compatibility Notes

• Verify the engine model installed in the excavator before ordering.

• Confirm that 5I-7706 matches the original injector part number.

• Compatibility across 3064, 3066, S4KT, and S6KT engines has not been independently confirmed.

• Check the machine serial number, engine serial number, and applicable parts catalog to confirm fitment.

FAQ

Q1: Does fuel injector 5I-7706 fit the CAT 320B excavator?

The CAT 320B is the supplied equipment application. Confirm the installed engine model and serial number before ordering.

Q2: Are 5I-7706 and 5I7706 the same part number?

They are two formatting variants of the supplied reference. Verify the number against the original injector and parts catalog.

Q3: Can this injector be used in all 3064, 3066, S4KT, and S6KT engines?

Compatibility with all listed engines has not been confirmed. Check the engine identification plate and manufacturer's parts catalog.