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Yanmar

YANMAR - N21 -SEAT LOWER - 139653-14420

The YANMAR N21 SEAT LOWER (139653-14420) is a precision seating component designed to support and properly align mating engine parts within the valve or mechanical assembly. It ensures stable positioning and helps maintain tight sealing and accurate movement during engine operation.

Used in YANMAR N21 / 6N21 / 8N21 marine diesel engines, this component contributes to smooth engine performance, reduced wear, and reliable operation under continuous marine load conditions.

YANMAR - N21 - SEAT LOWER - 139653-14420
Home Engine Parts Other Ship Machineries YANMAR - N21 - SEAT LOWER - 139653-14420
Brand
Yanmar
Category
Engine Parts
Subcategory
Other Ship Machineries
Part Number
139653-14420

Description

MAKE : YANMAR
TYPE : N21 / 6N21 / 8N21

PART NAME : SEAT LOWER
PART NUMBER : 139653-14420

OTHER SPARES :
CYLINDER HEAD, CYLINDER LINER, PISTON, PISTON RING, CONNECTING ROD, CRANKSHAFT, MAIN BEARING, CAMSHAFT, CAMSHAFT GEAR, ROCKER ARM, EXHAUST VALVE, INLET VALVE, FUEL INJECTION PUMP, FUEL INJECTOR, 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.

This seat lower is manufactured from high-strength alloy steel with precision machining for accurate fitment and stable seating performance. It is engineered to withstand vibration, thermal cycling, and continuous mechanical load, ensuring durability and reliable engine operation in marine diesel applications.

Technical Specifications

  • MAKE : YANMAR
  • TYPE : N21 / 6N21 / 8N21
  • PART NAME : SEAT LOWER
  • PART NUMBER : 139653-14420
  • CATEGORY : VALVE / ENGINE SEATING COMPONENT
  • APPLICATION : YANMAR N21 / 6N21 / 8N21 DIESEL ENGINE
  • FUNCTION : PROVIDES LOWER SUPPORT AND ALIGNMENT FOR ENGINE SEATING SYSTEM
  • MATERIAL : HIGH STRENGTH ALLOY STEEL
  • CONDITION : GENUINE / NEW / OEM EQUIVALENT
  • INDUSTRY : MARINE, INDUSTRIAL AND POWER GENERATION

Engine Compatibility

N21 8N21L-SV 8N21L-EV 8N21L-GV 8N21L-DV 8N21AL-SV 8N21AL-GV 8N21AL-EV 8N21AL-DV 8N21L-DN 8N21L-UN 8N21L-SN 8N21L-EN 8N21AL-DN 8N21AL-UN 8N21AL-SN 8N21AL-EN 6N21L-SV 6N21L-EV 6N21L-GV 6N21L-DV 6N21AL-SV 6N21AL-GV 6N21AL-EV 6N21AL-DV 6N21L-DN 6N21L-UN 6N21L-SN 6N21L-EN 6N21AL-DN 6N21AL-UN 6N21AL-SN 6N21AL-EN

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