Sierra Water Jacket Gasket 18-2856-9, Replaces 319665, Fits Evinrude 25/35 HP Outboards, Pack of 2

The Sierra 18-2856-9 Water Jacket Gasket seals the water jacket on Evinrude 25/35 HP outboard engines, maintaining proper cooling system sealing between mating engine surfaces. This gasket is sold as a package of 2, giving you a spare on hand for a future service or allowing you to complete a job that calls for more than one gasket. It directly replaces OEM part number 319665, so it installs as a drop-in match during a water jacket service or cooling system rebuild. Using the correct water jacket gasket is important for preventing coolant leaks and maintaining consistent engine temperature, which protects the powerhead from overheating damage. The gasket is designed to fit the mating surfaces of the specified Evinrude 25/35 HP outboard application precisely, so it seats correctly without modification. At 0.11 pounds for the package, it is a lightweight, low-cost maintenance part that belongs in any Evinrude outboard owner's spare parts kit or service toolbox alongside other gaskets for the same engine family.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2856-9
• Product Name: Water Jacket Gasket
• Package Quantity: 2
• Weight: 0.11 pounds
• UPC: 808282163617
• Category: Evinrude Outboard Gasket Sets

Fitment

• Evinrude 25/35 HP outboard engines

Replaces (OEM)

• 319665

Frequently Asked Questions

What does the Sierra 18-2856-9 water jacket gasket fit? The Sierra 18-2856-9 is designed for Evinrude 25/35 HP outboard engines, sealing the water jacket on the powerhead.

Does this gasket cross-reference to an OEM part number? Yes, the Sierra 18-2856-9 replaces OEM number 319665.

How many gaskets come in a package? The 18-2856-9 is sold as a package of 2 water jacket gaskets.

How much does the 18-2856-9 gasket package weigh? The package weighs 0.11 pounds.

Is the Sierra 18-2856-9 an OEM or aftermarket gasket? It is a Sierra aftermarket gasket manufactured to replace OEM number 319665 on Evinrude 25/35 HP outboards.

What is the UPC for this product? The UPC for the Sierra 18-2856-9 water jacket gasket package is 808282163617.

Can I use the 18-2856-9 gasket for a future repair as a spare? Yes, since the 18-2856-9 comes 2 to a package, one gasket can be installed now and the second kept on hand as a spare.

What system does this gasket seal on the outboard? The 18-2856-9 seals the water jacket, which is part of the engine's cooling system, on Evinrude 25/35 HP outboards.

Will the 18-2856-9 fit outboards other than the 25/35 HP Evinrude? The Sierra 18-2856-9 is specified for Evinrude 25/35 HP outboard engines; check the OEM number 319665 against your engine's parts manual to confirm fit on other applications.

Is a gasket sealant needed when installing the 18-2856-9? The listing does not specify a required sealant; follow your engine service manual's procedure when installing the Sierra 18-2856-9 water jacket gasket.