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Sierra 18-3540 Thermostat for Yamaha Outboard Engines

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-3540
11 reviews
04/21/2036 8:22 AM
Sale Price

$19.06

4 left at this price

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Usually delivered within 2 days

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Product Details

The Sierra 18-3540 is a precision-engineered replacement thermostat designed for Yamaha outboard engines. This small-format thermostat regulates engine temperature by opening at 122°F to allow coolant circulation, helping maintain optimal operating temperature and prevent overheating.

Key Features:

  • Opening temperature: 122°F (50°C)
  • Direct replacement for Yamaha OEM part
  • Compact design for tight engine compartments
  • Corrosion-resistant construction for marine environments
  • Compatible with most Yamaha outboard engines (excluding 3.1L models)

Sierra Marine is a trusted aftermarket manufacturer known for quality replacement parts that meet or exceed OEM specifications. This thermostat provides reliable temperature regulation to protect your Yamaha outboard engine from heat-related damage while ensuring efficient performance.

Site was user friendly. Shipping was quick. The pricing was the best I could find

This copany shipped my order promptly. I would do business with them again.

Quick and easy.

Had the part i was looking for.

very fast processing received product within a few days. fair prices. will do business with again.

Fast and easy

easy with amazon

Very Easy

Great prices, quick shipping, customer service a bit difficult to reach. But, after reaching customer service, issue was resolved without a problem.

Quick and easy checkout process...

this is supposed to fit my 2003 Chevy avalanche 4 x 4 Z71 with cladding correct?

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