Sierra Thermostat 18-3636 for Yamaha Outboard Engines

The Sierra 18-3636 is a replacement thermostat designed for Yamaha outboard engines. The thermostat is a core cooling-system component that regulates engine operating temperature by opening and closing to control coolant flow, helping the engine reach and maintain its proper running temperature. Replacing a worn, stuck, or failed thermostat is a routine part of outboard cooling system maintenance and helps prevent overheating or over-cooling issues that can affect engine performance and longevity.

This unit carries the Sierra part number 18-3636 and is built to a compact 0.39 x 0.39 x 0.39 inch size, making it a direct fit for the cooling system housings it is designed for. Keeping the cooling system in good working order with a properly functioning thermostat supports consistent engine temperature, efficient combustion, and reduced strain on other cooling components such as the water pump and impeller.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3636
• Product Category: Yamaha Outboard Thermostat
• UPC: 808282375416
• Weight: 0.16 pounds
• Dimensions: 0.39 x 0.39 x 0.39 inches

Frequently Asked Questions

What engines does the Sierra 18-3636 thermostat fit? The Sierra 18-3636 is categorized for Yamaha outboard engines as a cooling system thermostat.

What does part number 18-3636 refer to? 18-3636 is the Sierra manufacturer part number for this outboard engine thermostat.

How much does the Sierra 18-3636 thermostat weigh? This thermostat weighs 0.16 pounds.

What are the dimensions of the Sierra 18-3636 thermostat? The Sierra 18-3636 measures 0.39 x 0.39 x 0.39 inches.

What does a thermostat do in an outboard engine's cooling system? A thermostat like the Sierra 18-3636 opens and closes to regulate coolant flow, helping the engine reach and hold its proper operating temperature.

Is the Sierra 18-3636 a genuine Sierra part? Yes, 18-3636 is a Sierra branded thermostat, sold under Sierra's own part numbering.

When should a thermostat like the 18-3636 be replaced? A thermostat is typically replaced when it fails to open or close properly, which can cause an outboard engine to run too hot or too cool; the Sierra 18-3636 is intended as a replacement part for that purpose.

What is included when ordering the Sierra 18-3636? Ordering the Sierra 18-3636 provides one replacement thermostat unit.

Does replacing the thermostat require special tools? The dossier for the Sierra 18-3636 does not specify installation tool requirements; consult your engine's service manual for the housing access procedure.

What UPC is associated with the Sierra 18-3636 thermostat? The UPC for the Sierra 18-3636 thermostat is 808282375416.