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Outstanding results. Great design. A must have.
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RIPP 180 Degree Thermostat for 5.7L and 6.4L V8 HEMI Engines
An efficient cooling system is essential for your HEMI V8 engine. The RIPP thermostat increases the efficiency of your engine's cooling system by opening at 180°F, compared to your vehicle's standard thermostat, which opens at 203°F. This allows coolant to flow through sooner, helping to reduce and maintain cooler temperatures in the engine. This is also a great addition to vehicles with upgraded radiators and fans. The RIPP 180° thermostat does not change your vehicle's normal operating temperature; it only allows the coolant system to flow earlier.
Our secret weapon: The RIPP thermostat revolutionizes engine cooling with a unique design feature. Unlike conventional thermostats, ours incorporates a longer piston, increasing thermostat valve lift. While factory thermostats typically open at 7mm, the RIPP Thermostat has an impressive 12mm lift! This extra lift is our secret weapon against heat, allowing more coolant to flow through the system, thus increasing cooling performance.
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Fits the following vehicles:
- 2005 to Current: Dodge Charger/ Challenger V8
- 2005 to Current: Chrysler 300 V8
- 2005 to Current: Dodge Durango V8
- 2005 to Current: Jeep Grand Cherokee V8
- And many more V8 Hemi vehicles including Scat Pack, 392, and SRT models
* NOTICE: When using a modified cooling system or low temp thermostat in a cold environment it's possible for the vehicle to have a error code referencing slow engine warm up time.
Pro Tips:
Engine Cooling Service: We recommend replacing the thermostat and flushing the cooling system every 45,000 miles or every 4 years. This helps remove any accumulated debris, contaminants, and old coolant, ensuring the proper functioning of the cooling system. Your coolant system service should also check coolant expansion tanks, hoses, and fittings.
Tuning: Installing the RIPP low-temperature thermostat is a very effective way to lower engine temperatures. Although tuning is unnecessary, with the lower-temperature thermostat installed, you can use the cooler engine conditions to fine-tune fuel and timing parameters. This can increase horsepower and torque and avoid dash lights operating in a cold environment. (i.e., installing a temp thermostat in a cold environment could trigger a warning light indicating a slow warm-up time)
Coolant Mixture: The coolant-to-water mixture in an engine's cooling system regulates the engine's operating temperature. The mixture typically consists of coolant and water. The standard recommended mixture is a 50:50 mix. However, adjusting the ratio as deemed necessary in race applications or hot environments is common. A higher water content enhances the thermal conductivity of the mixture, improving its ability to transfer heat away from the engine components. This can benefit a race application where the engine is subjected to high loads and temperatures. Always consult a professional, as every vehicle will have its own variables.
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Customer Reviews
Overall rating: 4.9 / 5 from 45 reviews.
I absolutely love it! The RIPP thermostat is the best option. It outperforms Mishimoto. Please ensure that your fan is set to tune. I don't care what other people say about not adjusting the fan settings.
I bought this thermostat from RIPP. The quality is great and the shipping is fast. I recommend it to everyone.
Thermostat works as advertised. Better even. Beating the absolute crap out of it then heat soaking in the drive thru while it's 105 outside, my trucks water temp never peaks past 185. Exactly what I was looking for, even tho it's a stock 5.7 minus exhaust and a mild cam, a cool engine is a happy engine.
Fits and works as it should, quick shipping, got my car ready just in time for my son to take it to prom
It’s great! Keeps my coolant temps down especially in this hot summer weather. 10/10 👍🏽
Easy to install and works as expected.
Great thermostat. No problems with the 2 vehicles I have used it on. Thanks
Works as it should. Crusing temp holds at 185. Taser allows me to clear P0128 low temp code until i can get my T/A retuned. Great addition to the RIPP coilpacks. Only issue is product did not come with RIPP mods decal. Semper Fi
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Works great keeps my temperatures down specially when towing
Quick and easy to install. Coolant temp used to hover around 205° while cruising, now it stays at 185°. Oil temp used to hit 220°, now it hovers around 200°. They go up with spirited driving of course but they cool back down after some cruising. Definitely a worthwhile mod for engine longevity and performance.
Made a huge difference in engine temp. But time will tell if it is actually stable.
Good quality! Best of all running solid 185. Beats the factory thermostat. Hated the higher temps.
I used the Motoshi thermostat, something named like that, and it didn't work before, but this one that I am leaving a review on worked great, thanks!
Works great. Engine is supercharged and still runs nice and cool
It worked for now
Great thermostat and great product!
Wil buy again!!
I have cnc ported cylinder heads, stage 2 hrt cam, and full bolt ons. I went through three thermostats from the local part store, they were all junk. This Ripp thermostat opens exactly when its supposed to and flows way more than stock. The 180⁰ helps keep oil cool, reduces intake air temps and reduces risk of spark knock. I highly recommend it, especially if you're modded or boosted
So far I really like it most 180 degree thermostats don't last but so far this one is holding up but could change in a month or so
Jeep 392. I set the custom tune on my Diablosport to 190 and the engine stays between 185 and 190 at all times. It runs better, smother, and gets better gas mileage
Great product. Does what it says . Only encounter the temperature reaching 208 degrees once. But apart from that its doing just fine
Install was easy and works an advertised.
Runs way cooler. You will really see the difference.
Highly recommend
keeps engine temps. exactly as advertised
I noticed that my temperature gauge does not go past 200, the fans kick on and it brings it right back down to 185 - 195
Placed in a resto-mod 1970 Challenger
This is a great product, so far it has worked very well! Just a simple notice, this is likely to trigger your check engine light, but dont let this worry you. The code should be P0128 for coolant thermostat, the stock ECU (on my 2023 Charger R/T atleast) is programmed to reach 203°F coolant temp, the 180° thermostat doesn't get the engine up to those temps, and the computer will think the thermostat is stuck open. It is not, if you want to ensure you dont get the light for that again, a tune will be needed. Its a great product and my car performs better in the summer heat with it. Would recommend for quality and great customer service! 🔥
I should have change this a long time ago! I live in Texas and now my R/T Durango stays near the 1/4 mark where before it was always in the 1/2 (190F).
Installed this T-stat about 2 weeks ago, works as advertised. Wether im driving down the road or idling in traffic, the coolant temp rarely gets to 190. Before this t-stat, my temps would get as high as 218-220. I highly recommend this T-stat
Works as intended
10/10 does the job
Perfect fit! Engine running better since going to 180 degree instead of stock 205.
The Coils i installed gave me extra boost and the 180° thermastat I installed is keeping my temperature right around 185°-186°. I am now debating if I should replace my spark plugs with just 17,000 miles on my DD392.
Love the extended throw- main reason for purchasing for each vehicle.
Down in Florida it is hot most of the year and machinery has a tendency to overheat. When I replaced my radiator in my Jeep Commander the Mechanics at the local Chrysler/Jeep dealership advised me to go with a cooler thermostat and that other customers loved them.
Great part.
2009 Dodge Ram with 170K Miles. Have kept it very well maintained with most major parts replaced.