Cylinder Head Gasket For TOHATSU NISSAN Outboard 25, 30 HP NS25C2 NS30A4 Gasket 346-01005-0 346010050

Certification: ISO9001 factory production; CE documents available upon request

Real Product Photos: Cylinder head gasket overview, hole‑position & thickness detail, cylinder block mating reference picture

This robust aftermarket cylinder head gasket serves as a trustworthy drop‑in replacement for Tohatsu and Nissan NS25C2, NS30A4 25HP and 30HP marine outboard motors. It matches OEM part numbers 346‑01005‑0 and 346010050.

It is manufactured from premium multi‑layer compression‑resistant gasket material. This head gasket delivers outstanding heat resistance, stable anti‑aging traits and reliable salt‑water corrosion resistance for long‑term high‑temperature marine engine operation.

It creates a firm sealing interface between cylinder head and engine block. It prevents compression leakage, coolant loss and exhaust gas blow‑by when the outboard runs under heavy‑load on‑water working conditions.

This gasket is precision‑die‑cut following original OEM specifications, ensuring accurate bolt‑hole alignment and consistent compression performance after installation. It resolves common engine troubles such as power reduction, engine overheating, water seepage and low compression caused by blown or deteriorated factory head gaskets.

All critical dimensions comply with OEM standards. You can complete quick, straightforward drop‑in installation, and no trimming or extra adjustments are needed. 

Thoroughly scrape away old gasket debris and clean both mating surfaces prior to fitting. Avoid folding or misaligning the gasket throughout assembly.

Swap your blown, crushed or aged original cylinder head gasket with this component, and you will restore dependable compression and cooling‑system sealing for your outboard. Follow regular marine maintenance schedules. These good practices extend engine service life and sustain stable engine performance out on the water.

Aftermarket Gasket, Cylinder Head 346-01005-0

Mercury NO.: 27-8129391


Fit on: TOHATSU/NISSAN 25, 30 HP

Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Accessories
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Accessories
Tohatsu Outboard 30HP M30A3 1996 Accessories
Tohatsu Outboard 25HP M25C3 2002 ASSEMBLY KIT
Tohatsu Outboard 25HP M25C 2005 ASSEMBLY KIT
Tohatsu Outboard 25HP M25C2 1996 ASSEMBLY KIT
Nissan Outboard 25HP NS25C3 - 2-Stroke Nissan 2005 ASSEMBLY KIT
Nissan Outboard 25HP NS25C3 - 2-Stroke Nissan 2002 ASSEMBLY KIT
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 ASSEMBLY KIT
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 ASSEMBLY KIT
Nissan Outboard 30HP NS30A4 - 2-Stroke Nissan 2002 ASSEMBLY KIT
Tohatsu Outboard 30HP M30A3 2002 ASSEMBLY KIT
Tohatsu Outboard 30HP M30A3 1996 ASSEMBLY KIT
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Bar Handle
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Bar Handle
Tohatsu Outboard 30HP M30A3 1996 Bar Handle
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 BRACKET & REVERSE LOCK
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 BRACKET & REVERSE LOCK
Tohatsu Outboard 30HP M30A3 1996 BRACKET & REVERSE LOCK
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 CARBURETOR
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 CARBURETOR
Tohatsu Outboard 30HP M30A3 1996 CARBURETOR
Tohatsu Outboard 25HP M25C3 2002 Cylinder Crank Case Assembly
Nissan Outboard 25HP NS25C3 - 2-Stroke Nissan 2003 Cylinder Crank Case Assembly
Tohatsu Outboard 25HP M25C2 2003 Cylinder Crank Case Assembly
Nissan Outboard 25HP NS25C3 - 2-Stroke Nissan 2002 Cylinder Crank Case Assembly
Tohatsu Outboard 30HP M30A3 2002 Cylinder Crank Case Assembly
Tohatsu Outboard 25HP M25C2 1996 Cylinder Crank Case Assembly
Nissan Outboard 30HP NS30A4 - 2-Stroke Nissan 2003 Cylinder Crank Case Assembly
Nissan Outboard 30HP NS30A4 - 2-Stroke Nissan 2002 Cylinder Crank Case Assembly
Tohatsu Outboard 30HP M30A4 2003 Cylinder Crank Case Assembly
Tohatsu Outboard 30HP M30A3 1996 Cylinder Crank Case Assembly
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Cylinder, Crankcase Assy
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Cylinder, Crankcase Assy
Tohatsu Outboard 30HP M30A3 1996 Cylinder, Crankcase Assy
Tohatsu Outboard 25HP M25C 2005 Cylinder-Crank Case Assy
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Cylinder-Crank Case Assy
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Cylinder-Crank Case Assy
Nissan Outboard 25HP NS25C3 - 2-Stroke Nissan 2005 Cylinder-Crank Case Assy
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Driveshaft Housing, Gear Case
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Driveshaft Housing, Gear Case
Tohatsu Outboard 30HP M30A3 1996 Driveshaft Housing, Gear Case
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Electric Starter (P & F Types)
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Electric Starter (P & F Types)
Tohatsu Outboard 30HP M30A3 1996 Electric Starter (P & F Types)
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 FUEL PUMP
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 FUEL PUMP
Tohatsu Outboard 30HP M30A3 1996 FUEL PUMP
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 FUEL TANK (REMOTE)
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 FUEL TANK (REMOTE)
Tohatsu Outboard 30HP M30A3 1996 FUEL TANK (REMOTE)
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Gear Shift
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Gear Shift
Tohatsu Outboard 30HP M30A3 1996 Gear Shift
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Inlet Reed Valve
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Inlet Reed Valve
Tohatsu Outboard 30HP M30A3 1996 Inlet Reed Valve
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 MAGNETO
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 MAGNETO
Tohatsu Outboard 30HP M30A3 1996 MAGNETO
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Motor Cover
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Motor Cover
Tohatsu Outboard 30HP M30A3 1996 Motor Cover
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 PISTON & CRANK SHAFT
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 PISTON & CRANK SHAFT
Tohatsu Outboard 30HP M30A3 1996 PISTON & CRANK SHAFT
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 RECOIL STARTER
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 RECOIL STARTER
Tohatsu Outboard 30HP M30A3 1996 RECOIL STARTER
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 REMOTE CONTROL
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 REMOTE CONTROL
Tohatsu Outboard 30HP M30A3 1996 REMOTE CONTROL
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Starter Lock
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Starter Lock
Tohatsu Outboard 30HP M30A3 1996 Starter Lock
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Throttle Mechanism
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Throttle Mechanism
Tohatsu Outboard 30HP M30A3 1996 Throttle Mechanism
Nissan Outboard 25HP NS25C2 - 2-stroke Nissan 2002 Transmission Water Pump
Nissan Outboard 30HP NS30A3 - 2-stroke Nissan 2002 Transmission Water Pump
Tohatsu Outboard 30HP M30A3 1996 Transmission Water Pump