COOL STAR Engine Coolant Thermostat Housing 2782000815

Curated from 53 real Reddit conversations

Refreshed on: March 31, 2025

COOL STAR Engine Coolant Thermostat Housing 2782000815

Brand: COOL STAR
Price: $82
Snoop Score:
5.9
Sentiment
6.4
Popularity
9.5
Technical
4.7

Snoop's Take

The Engine Coolant Thermostat Housing 2782000815 from COOL STAR is designed to replace the weak factory plastic housing in various Mercedes-Benz models, ensuring optimal engine performance and longevity. Consumers have noted its advantages, highlighting that it is an "Upgrade Billet Aluminum Thermostat Housing" providing better durability and reliability compared to the stock components. However, some users have expressed concerns over the longevity of plastic parts, with quotes like, "the first time I did the plastic one to match the OEM but it cracked again a little over 2 years later" indicating that while the product is generally well-received, the choice between plastic and aluminum may be pivotal for long-term use. Based on the feedback, this thermostat housing is recommended for proactive maintenance, especially for those looking to upgrade from the factory plastic version.

Not for you? Check out our other rated Thermostat Housings

Getting a replacement for that will cost under $30 from your local auto zone.

Positive Feedback

And who can say whether or not there may have been a casting or molding flaw in the part?

Negative Feedback
Product
5.9
COOL STAR Engine Coolant Thermostat Housing 2782000815
Routine Maintenance Replacement
4 / 10
Performance Upgrades
3 / 10
OEM Restoration Projects
7 / 10
Universal Retrofits
3 / 10
See how this compares to all Thermostat Housings

What it does well!

Key strengths users can’t stop talking about.
Recommended for proactive maintenance in V6 engines
Getting a replacement for that will cost under $30 from your local auto zone.
I would highly recommend
Right now we have a crusty old Honeywell or something.
What is my best option for getting this bolt off?
Upgrade from weak factory plastic housing
It is a Upgrade Billet Aluminum Thermostat Housing to replace the weak factory plastic thermostat housing.

Where it needs some work!

Areas to watch—feedback on possible improvements.
Plastic components tend to crack over time
And who can say whether or not there may have been a casting or molding flaw in the part?
The first time I did the plastic one to match the OEM but it cracked again a little over 2 years later.
Stock thermostat housing may be sufficient
what’s wrong with the stock thermostat housing? This looks cool and all, but it seems more like another “cold air intake” gimmick.

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Core Power Plays

The specs and strengths that make it shine.
Excitement about new aftermarket parts
Not trying to get in trouble for doing a classified! I am a normal car guy that is super excited to make a part that is better then factory and I want everyone to have a chance to see it!

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Cost-effectiveness of replacing components
Takin off thermostat housing housing? I got a stuck bolt where the thermostat housing goes.
That’s the water pump. It probably be cheaper to replace the pump than take it to a welder.
Discussion on coolant replacement process
I will lose some coolant, but if its alot, then ill drain it properly.
You don't need to drain all of the coolant, no.
Thanks for the reply. So if im understanding you correctly, I dont have to mess with the radiator at all.

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Common issues with engine parts made of high-density plastic
Fate decided that it was time for it to crack in my wife's Pacifica lol.
Advice on HVAC issues and troubleshooting
Sounds like you got it sorted with the tech! For future issues, this site has tons of advice and insights on similar HVAC quirks.
The blinking "Cool On" means the cool cycle is in delay (5 minute by default).

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