YanmarYanmar 6N21 / 6N21AL Series

Yanmar 6N21 / 6N21AL Series

Yanmar 6N21 Major Overhaul BOM (10,000hr Service)

Overhaul Kits

Nota del Ingeniero: Esta lista incluye números de parte OEM validados para revisiones de 10,000h (Superior) y 20,000h (Mayor). Las cantidades son por unidad de motor individual.

Sistema	Nombre de Parte	N/P OEM	Cant.	Notas
Power Pack	Cylinder Liner Assembly (6N21/6N18)	746674-11713-C	6	Special thermal treatment \| Critical precision part
Power Pack	Piston Assembly (6N21 complete)	129001-02970	6	Cocktail-shaker cooling system \| Heavy-duty commercial
Cylinder Head	Individual Cylinder Head Assembly	746674-11710	6	4-valve design \| One per cylinder
Fuel System	Fuel Injector Nozzle (6N21)	YDLL-153348T90284	6	3x4x10mm spray \| Replace @ 2,000-3,000 hrs
Fuel System	Fuel Injection Pump (Bosch Type)	748606-51843	1	Two-way delivery valve \| Critical for timing
Electrical	Starting Air Valve Assembly	127610-33000	1	Solenoid-operated \| For air-start variants
Gaskets	Complete Overhaul Gasket Set	746674-02020	1	Extended set for 60.27L engine
Anodes	Pencil Anode (Large 20x55mm)	27210-200550	6	Extended duration variant for generators
Cooling	Seawater Pump Impeller	124223-42092	1	Flex-blade design \| High volume