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| Part Type | Fuel Injector Nozzle (Pencil Type) |
| Component Name | Nozzle As-Fuel Valve |
| Fuel System Series | Caterpillar 7000 Series Unit Injector |
| Injection Type | Direct Injection, Mechanical Unit Injector |
| Material | Hardened Alloy Steel (Needle & Body) |
| Spray Pattern | Multi-Hole (Engine Specific Calibration) |
| Surface Treatment | Precision Lapped / DLC Coating (Needle) |
| Operating Pressure Range | 250 - 350 Bar (Typical Peak) |
Manufacturer No.
4W70200R87914W-70200R-8791CA4W7020CA0R8791M-4W70204W70144W-7014
OEM Part No.
4W70200R87914W-70200R-8791
Engine Part No.
Caterpillar 3408Caterpillar 3408BCaterpillar 3408CCaterpillar 3412Caterpillar 3412BCaterpillar 3412CCaterpillar PM3412Caterpillar SR4
Interchange No.
CA4W7020CA0R8791M-4W70204W70144W-7014
Fitment Vehicles
Caterpillar 3408 Industrial EngineCaterpillar 3412 Industrial EngineCaterpillar SR4 Generator SetCaterpillar D7G Track Type TractorCaterpillar 235 Excavator
Fuel System - Industrial Encyclopedia
OEM replacement pencil-type fuel injector nozzle 4W7020 0R8791 for Caterpillar 3408 and 3412 series diesel engines. Engineered for precise fuel metering and high-pressure durability.