Sierra 18-4299 Cylinder Head Gasket for Nissan/Tohatsu 60-70HP Outboard

The Sierra 18-4299 is a replacement cylinder head gasket engineered for Nissan and Tohatsu 60–70 HP two-stroke outboard engines. This gasket provides a reliable, leak-free seal between the cylinder head and engine block, making it an essential component during top-end engine rebuilds, head inspections, or overheating repairs.

Sierra marine gaskets are precision-machined to match head and block surfaces exactly, ensuring a proper seal that meets or exceeds original equipment manufacturer (OEM) specifications. Whether you're a trained marine technician or a confident DIY mechanic, this is a direct-fit replacement you can trust.

Key Features:

• Direct replacement cylinder head gasket for Nissan/Tohatsu 60–70 HP outboards
• Precision-machined to meet or exceed OEM specifications
• Designed for reliable, leak-free sealing of the cylinder head to engine block
• Replaces OEM part numbers: 3F3-01005-0, 3F3-01005-0M, 3F3-01005-1, 3F3-01005-1M
• Also cross-references: Mallory 9-63882

Always replace the head gasket when inspecting or servicing the cylinder head. Using a quality Sierra replacement gasket ensures a long-lasting repair and helps prevent coolant or compression leaks that can lead to serious engine damage.