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πŸ”₯ sierra 18-3621 thermostat kit: improve engine performance and efficiency logo

πŸ”₯ Sierra 18-3621 Thermostat Kit: Improve Engine Performance and Efficiency Review

3

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Average

Revainrating 3 out of 5Β Β 
RatingΒ 
3.0
🌑️ Engine Cooling & Climate Control, πŸ› οΈ Replacement Parts

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Description of πŸ”₯ Sierra 18-3621 Thermostat Kit: Improve Engine Performance and Efficiency

Designed for use in marine stern drive applications. Contains (1) 18-3558 Thermostat, (1) 18-0164 Thermostat Housing Gasket, and (1) Mercruiser Stern Drive 25-805063 O-Ring. Temperature Rating: 160Β°F/71Β°C. Each Sierra product meets or exceeds the original equipment part it replaces.

Reviews

Global ratings 3
  • 5
    1
  • 4
    0
  • 3
    1
  • 2
    0
  • 1
    1

Type of review

Revainrating 3 out of 5

Useless kit for automotive cooling

As a result of my tests, I determined that this kit was a waste of money. The installation was tedious and took longer than expected with no noticeable improvement in my engine's cooling system. The only pro was the low price, but it's not worth sacrificing quality for affordability. In the end, I had to replace it with a more reliable brand. Cons: Poor quality, ineffective.

Pros
  • High-quality materials used in construction ensure durability and longevity
Cons
  • May require professional installation which can incur additional costs

Revainrating 1 out of 5

Volvo Penta 3.0 in Engine Cooling and Air Conditioning

Installed this thermostat and the thermostat opens at approx 185 and fluctuates between 175-185 while driving. And it should be stat 160t like my original. I will order elsewhere

Pros
  • Automotive
Cons
  • Sparse Instructions

Revainrating 5 out of 5

5 stars, but be careful with the padding.

Be careful when removing the adhesive from the gasket. The padding is thin and can fold a bit due to the way it's packaged, so I ripped mine off when removing it, but that was my fault. I had upholstery material lying around so I made it myself. Everything else works fine and keeps the right temperature.

Pros
  • Engine Cooling and Air Conditioning
Cons
  • Mostly OK, but...