Sierra Thermostat Gasket 18-0835 - Replaces Yamaha 62Y-12414-00-00 for Yamaha 2-Stroke Outboards

The Sierra 18-0835 is a thermostat gasket built for Yamaha 2-stroke outboard cooling systems. It seals the mating surface between the thermostat and its housing, keeping coolant flow contained and preventing leaks that can lead to overheating. This gasket is the direct cross-reference equivalent of Yamaha OEM part number 62Y-12414-00-00, so it installs as a straightforward replacement using the same mounting points and sealing surface as the original equipment part.

As part of Sierra's outboard cooling system lineup, this gasket is intended to be replaced any time the thermostat is serviced or replaced, since a reused gasket can lose its seal integrity. It is a lightweight, single-use component sold individually (quantity of 1 per thermostat).

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0835
• Product Type: Thermostat Gasket
• OEM Cross Reference: 62Y-12414-00-00
• Application: Yamaha 2-Stroke Outboard Cooling System
• Weight: 0.01 pounds
• UPC: 808282265441
• Quantity per Engine: 1

Fitment

• Yamaha 2-stroke outboard engines (cooling system / thermostat housing)

Replaces (OEM)

• 62Y-12414-00-00

Frequently Asked Questions

What does the Sierra 18-0835 thermostat gasket fit? The Sierra 18-0835 is designed for Yamaha 2-stroke outboard cooling systems, sealing the thermostat housing on these engines.

What OEM part number does 18-0835 replace? It replaces Yamaha OEM part number 62Y-12414-00-00, making it a direct cross-reference for that gasket.

Is the 62Y-12414-00-00 gasket the same as the Sierra 18-0835? Yes, Sierra part 18-0835 is the equivalent to Yamaha OEM number 62Y-12414-00-00 and can be used in its place.

How much does this thermostat gasket weigh? The 18-0835 thermostat gasket weighs 0.01 pounds.

How many gaskets are included when ordering 18-0835? One 18-0835 thermostat gasket is included, matching the quantity of 1 per engine listed for this application.

When should I replace the thermostat gasket on a Yamaha 2-stroke outboard? The 18-0835 gasket should be replaced any time the thermostat is removed or serviced on a Yamaha 2-stroke outboard, since reinstalling a used gasket can compromise the seal.

Does the 18-0835 gasket come with a thermostat? No, 18-0835 is the gasket only; it does not include a thermostat as part of the package.

What does a thermostat gasket like 18-0835 actually do? It seals the joint between the thermostat and its housing on the Yamaha 2-stroke outboard cooling system, preventing coolant leaks at that connection.

Is Sierra 18-0835 a genuine cross-reference part or a generic substitute? It is sold as a direct cross-reference replacement for Yamaha OEM number 62Y-12414-00-00, matching that part's application in the Yamaha cooling system.

What is the UPC for the Sierra 18-0835 thermostat gasket? The UPC for the 18-0835 thermostat gasket is 808282265441.