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YANMAR - N21 -CAP NUT - 125310-39420

The CAP NUT - 125310-39420 is a protective fastening component used in YANMAR N21 marine diesel engines. It is designed to securely fasten threaded studs or bolts while protecting exposed threads from corrosion, contamination, and mechanical damage. Suitable for YANMAR N21, 6N21, and 8N21 engines, it provides reliable fastening and enhanced durability in demanding marine environments.

YANMAR - N21 - CAP NUT - 125310-39420
Home Engine Parts Other Ship Machineries YANMAR - N21 - CAP NUT - 125310-39420
Brand
Yanmar
Category
Engine Parts
Subcategory
Other Ship Machineries
Part Number
125310-39420

Description

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

PART NAME : CAP NUT
PART NUMBER : 125310-39420

OTHER SPARES :
CYLINDER HEAD, CYLINDER LINER, PISTON, PISTON PIN, PISTON RING, CONNECTING ROD, CRANKSHAFT, MAIN BEARING, CAMSHAFT, CAMSHAFT GEAR, ROCKER ARM, EXHAUST VALVE, INLET VALVE, VALVE SEAT, FUEL INJECTION PUMP, FUEL INJECTOR, NOZZLE HOLDER, GOVERNOR PARTS, LUBE OIL PUMP, WATER PUMP, AIR COOLER, TURBOCHARGER, STUD BOLT, HEX NUT, LOCK NUT, WASHER, FASTENERS, GASKET KIT, OVERHAUL KIT, O-RING, SEAL RING, BUSH, BEARING AND OTHER ENGINE COMPONENTS.

ENGINEX MARINE is a trusted supplier of YANMAR marine diesel engine spare parts for models including N18, N21, 6N21, 8N21, M200, M220, Z280, M260, N280, N330, HAL, EY18, EY22, EY26, and EY17.

Manufactured from high-strength steel with corrosion-resistant finishing, the CAP NUT is engineered to withstand vibration, torque loads, thermal cycling, and harsh marine operating conditions. Its enclosed dome design protects threaded ends from moisture, dirt, and physical damage while maintaining secure clamping force. The robust construction ensures long service life, reliable fastening, and improved component protection in YANMAR N21, 6N21, and 8N21 marine diesel engines.

Technical Specifications

  • MAKE : YANMAR
  • TYPE : N21 / 6N21 / 8N21
  • PART NAME : CAP NUT
  • PART NUMBER : 125310-39420
  • CATEGORY : FASTENING COMPONENT
  • APPLICATION : YANMAR N21 / 6N21 / 8N21 DIESEL ENGINE
  • FUNCTION : SECURES THREADED FASTENERS AND PROTECTS EXPOSED THREADS FROM DAMAGE AND CORROSION
  • MATERIAL : HIGH-STRENGTH CORROSION-RESISTANT STEEL
  • CONDITION : GENUINE / NEW / RECONDITIONED
  • 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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