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Sierra International 18 3653D Marine Thermostat Review

2

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Very good

Revainrating 4.5 out of 5  
Rating 
4.3
🌡️ Engine Cooling & Climate Control, 🛠️ Replacement Parts

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Description of Sierra International 18 3653D Marine Thermostat

Designed for use in marine applications. Contains (1) 18-2858 Thermostat Housing Gasket, (1) 18-2947 Thermostat Gasket, (1) 18-3554 Thermostat, (1) 18-7170 O-Ring, (1) 18-0929 Thermostat Gasket, and (1) 18-0398 Thermostat Gasket. Interchangeable with GLM 13430 and Mallory 9-43157. Each Sierra product meets or exceeds the original equipment part it replaces.

Reviews

Global ratings 2
  • 5
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  • 4
    1
  • 3
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  • 2
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  • 1
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Type of review

Revainrating 4 out of 5

Great Replacement Thermostat

As an automotive enthusiast, I was PLEASED to find this replacement thermostat. It was easy to install and has greatly improved my engine's cooling system... The quality of the product is apparent and i am confident it will last. The only downside was the price, but the performance is worth it. Overall, I highly recommend this product for anyone in need of a reliable replacement thermostat..

Pros
  • Durable and reliable for marine use
Cons
  • May malfunction if not installed properly

Revainrating 5 out of 5

Perfect fit for my 1999 Volvo-Penta 5.0 GL

When I first started the engine in my backyard in 2018 I noticed the engine temperature drop. Hand pressure on the rabbit's ears increased the water pressure and allowed the old thermostat to open and adjust. I decided it was time to replace the sticky (and rusty) 4 year old thermostat. I ordered the Sierra kit and received it in a few days. The kit included an o-ring and gasket for my application. Calm is restored.

Pros
  • Includes (1) Thermostat Housing Gasket 18-2858, (1) Thermostat Gasket 18-2947, (1) Thermostat 18-3554, (1) O-Ring 18-7170, (1) 18 -0929 Thermostat Gasket and (1) 18-0398 Thermostat Gasket
Cons
  • Clean