OEM-specification Komatsu Nozzle As-Fuel Valve. CTP aftermarket replacement. Part number 4W7017. Compatible with 16G, 16H NA, 245, 245B, 245D, 621E, 621F, 623E, 627E, 627F, 772B, 773B, 775B, 824C, 825C, 826C, 980C, 980F, 980F II, D40D, HT400, RR- 250, SM-350, SS-250; Engine: 3406B, 3406C, 3408.
Always verify with serial number before ordering.
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Use clean, filtered fuel — fuel injection components have micron-level tolerances. Prime fuel system before cranking to avoid dry-start damage. Replace fuel filter whenever servicing injection components. Calibrate injectors after replacement if equipment has ECU.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.