Yanmar YANMAR - N21 -SPRING RETURN VALVE - 146673-51370
The Spring Return Valve is a precision fuel system component used in YANMAR N21 / 6N21 / 8N21 marine diesel engines to provide the required spring force for the return valve mechanism. It ensures proper valve operation, controlled fuel return flow, and stable fuel system pressure during engine operation.
Designed for marine diesel engine fuel injection systems, this spring contributes to accurate fuel regulation, efficient combustion, and reliable engine performance under varying load conditions.
Brand
Yanmar
Category
Engine Parts
Subcategory
Other Ship Machineries
Part Number
146673-51370
Description
MAKE : YANMAR
TYPE : N21 / 6N21 / 8N21
PART NAME : SPRING RETURN VALVE
PART NUMBER : 146673-51370
OTHER SPARES :
CYLINDER HEAD, CYLINDER LINER, PISTON, PISTON RING, CONNECTING ROD, CRANKSHAFT, MAIN BEARING, THRUST BEARING, CAMSHAFT, CAMSHAFT GEAR, ROCKER ARM, EXHAUST VALVE, INLET VALVE, FUEL INJECTION PUMP, FUEL INJECTOR, DELIVERY VALVE, RETURN VALVE, PLUNGER, GOVERNOR PARTS, LUBE OIL PUMP, WATER PUMP, AIR COOLER, TURBOCHARGER, GASKET KIT, OVERHAUL KIT, O-RING, SEAL RING, BUSH, BEARING, FASTENERS AND OTHER ENGINE COMPONENTS.
ENGINEX MARINE is a well-known supplier of YANMAR marine diesel engine spare parts, covering models such as NY16, N18, N21, M200, M220, T220, T240, T260, N165, S165, S185, Z280, N260, N280, N330, HAL, EY18, EY22, EY26, and EY17.
The spring return valve is manufactured from premium-grade spring steel with high fatigue strength, elasticity, and resistance to deformation. It operates under repeated compression cycles, fuel pressure fluctuations, vibration, and elevated temperatures, ensuring consistent valve response and pressure control. Its robust construction improves fuel system stability, enhances injection efficiency, and supports the long-term reliability of YANMAR N21, 6N21, and 8N21 marine diesel engines.
TYPE : N21 / 6N21 / 8N21
PART NAME : SPRING RETURN VALVE
PART NUMBER : 146673-51370
OTHER SPARES :
CYLINDER HEAD, CYLINDER LINER, PISTON, PISTON RING, CONNECTING ROD, CRANKSHAFT, MAIN BEARING, THRUST BEARING, CAMSHAFT, CAMSHAFT GEAR, ROCKER ARM, EXHAUST VALVE, INLET VALVE, FUEL INJECTION PUMP, FUEL INJECTOR, DELIVERY VALVE, RETURN VALVE, PLUNGER, GOVERNOR PARTS, LUBE OIL PUMP, WATER PUMP, AIR COOLER, TURBOCHARGER, GASKET KIT, OVERHAUL KIT, O-RING, SEAL RING, BUSH, BEARING, FASTENERS AND OTHER ENGINE COMPONENTS.
ENGINEX MARINE is a well-known supplier of YANMAR marine diesel engine spare parts, covering models such as NY16, N18, N21, M200, M220, T220, T240, T260, N165, S165, S185, Z280, N260, N280, N330, HAL, EY18, EY22, EY26, and EY17.
The spring return valve is manufactured from premium-grade spring steel with high fatigue strength, elasticity, and resistance to deformation. It operates under repeated compression cycles, fuel pressure fluctuations, vibration, and elevated temperatures, ensuring consistent valve response and pressure control. Its robust construction improves fuel system stability, enhances injection efficiency, and supports the long-term reliability of YANMAR N21, 6N21, and 8N21 marine diesel engines.
Technical Specifications
- MAKE : YANMAR
- TYPE : N21 / 6N21 / 8N21
- PART NAME : SPRING RETURN VALVE
- PART NUMBER : 146673-51370
- CATEGORY : FUEL INJECTION SYSTEM COMPONENT
- APPLICATION : YANMAR N21 / 6N21 / 8N21 DIESEL ENGINE
- FUNCTION : Provides spring force for return valve operation and maintains proper fuel system pressure regulation
- MATERIAL : HIGH-GRADE SPRING STEEL
- CONDITION : GENUINE / NEW / RECONDITIONED
- INDUSTRY : MARINE, INDUSTRIAL AND POWER GENERATION
