Sierra Thermostat Housing Gasket 18-0164-9, Replaces Yamaha YSC-13080-00-0C, Pack of 2

The Sierra 18-0164-9 Thermostat Housing Gasket seals the thermostat housing on Yamaha sterndrive engines, preventing coolant leaks and maintaining proper cooling system pressure. This gasket is manufactured to meet or exceed original equipment quality, giving it a reliable, leak-free seal at the thermostat housing mating surface. It is round in shape and sold in a package of 2, so you have a spare on hand or enough to service two units in one order.

Installing a fresh thermostat housing gasket during any thermostat service, cooling system inspection, or overheating diagnosis helps ensure the housing seats correctly and holds pressure. Because it is a direct cross-reference for the Yamaha YSC-13080-00-0C and GM 3789161 gaskets, it drops into place wherever those original parts are called for, without modification.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0164-9
• Pack Quantity: 2
• Shape: Round
• Weight: 0.01 pounds
• UPC: 808282161453
• OEM Cross Reference: YSC-13080-00-0C, GM 3789161

Fitment

• Yamaha sterndrive engines

Replaces (OEM)

• YSC-13080-00-0C
• GM 3789161

Frequently Asked Questions

What does the Sierra 18-0164-9 gasket fit? The Sierra 18-0164-9 is a thermostat housing gasket designed for Yamaha sterndrive engines, directly replacing the Yamaha YSC-13080-00-0C thermostat gasket.

Is the Sierra 18-0164-9 the same as the Yamaha YSC-13080-00-0C gasket? Yes, part 18-0164-9 is a direct cross-reference for the Yamaha YSC-13080-00-0C thermostat housing gasket, so it installs in the same location without modification.

Does this gasket also cross-reference to a GM part number? Yes, the 18-0164-9 thermostat housing gasket also replaces GM 3789161.

How many gaskets come in a package of 18-0164-9? Each package of the 18-0164-9 thermostat housing gasket contains 2 gaskets.

What shape is the 18-0164-9 thermostat housing gasket? The 18-0164-9 is a round gasket, matching the round mating surface of the thermostat housing it seals.

How much does the 18-0164-9 gasket weigh? The Sierra 18-0164-9 thermostat housing gasket weighs 0.01 pounds.

Is the Sierra 18-0164-9 gasket genuine OEM or aftermarket? The 18-0164-9 is a Sierra-manufactured aftermarket gasket built to meet or exceed the quality of the original Yamaha YSC-13080-00-0C and GM 3789161 gaskets it replaces.

When should I replace the thermostat housing gasket? Replace the 18-0164-9 thermostat housing gasket any time the thermostat housing is removed for service, or if coolant leaks are found at the housing seam.

What is the UPC for the Sierra 18-0164-9 gasket? The UPC for the Sierra 18-0164-9 thermostat housing gasket is 808282161453.

Can I reuse the old gasket instead of buying the 18-0164-9? A new 18-0164-9 gasket is recommended rather than reusing the old one, since gaskets compress and can leak once removed from the thermostat housing.