Sierra 18-2824-9 Upper Water Pump Gasket, Pack of 2, Replaces 27-32770, 27-19551

The Sierra 18-2824-9 is an upper water pump gasket for Mercury marine applications, sold in a pack of 2. This gasket seals the upper section of the water pump housing to prevent leaks and maintain proper cooling water flow through the pump assembly. It is made of glass material, measures 0.25 inches thick, and is finished in black. Each Sierra gasket is manufactured to meet or exceed the specifications of the original equipment part it replaces, making it a reliable choice when servicing or rebuilding a water pump. Because gaskets degrade with heat cycling and age, replacing the upper water pump gasket during any water pump service or impeller replacement helps ensure a proper seal and prevents coolant water leaks. This listing includes two gaskets per package, so a spare is on hand for future service or for pumps requiring more than one gasket.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2824-9
• Product Name: Upper Water Pump Gasket
• Pack Quantity: 2 gaskets
• Material: Glass
• Item Thickness: 0.25 inches
• Color: Black
• Weight: 0.01 pounds
• UPC: 808282163310

Fitment

• Mercury marine applications

Replaces (OEM)

• 27-32770
• 27-19551

Frequently Asked Questions

What does the Sierra 18-2824-9 gasket fit? The Sierra 18-2824-9 upper water pump gasket is designed for Mercury marine applications.

How many gaskets come in this package? This package includes 2 gaskets, as the Sierra 18-2824-9 is sold in a pack of 2.

What OEM part numbers does the 18-2824-9 replace? It replaces Mercury OEM numbers 27-32770 and 27-19551.

What material is the gasket made from? Glass is the material used for the Sierra 18-2824-9 upper water pump gasket.

How thick is the gasket? 0.25 inches is the thickness of the Sierra 18-2824-9 gasket.

What color is the Sierra 18-2824-9 gasket? Black is the color of this gasket.

How much does the gasket weigh? The Sierra 18-2824-9 upper water pump gasket weighs 0.01 pounds.

Is this a genuine Sierra part or aftermarket? The 18-2824-9 is a Sierra-branded gasket manufactured to meet or exceed the specifications of the original equipment part it replaces.

When should the upper water pump gasket be replaced? Replacing the upper water pump gasket is recommended during water pump service or impeller replacement to ensure a proper seal and prevent coolant water leaks.

Is there a lower water pump gasket available separately? Yes, the upper water pump gasket (18-2824-9) is a distinct part from a lower water pump gasket, so buyers should confirm which position they need before ordering.

What is the UPC for the Sierra 18-2824-9? The UPC for this pack of 2 upper water pump gaskets is 808282163310.