Mikioi E.
Looks and fits just like the OEM thermostat. Haven't had a chance to work the truck but the quality of the part itself is top shelf.
Paul H.
20 degrees cooler while towing! The install was great. Just drain your coolant down & the rest is easy from there.
Mike P.
Awesome products great instructional videos.
Jacob A.
Best investment I’ve made for my truck, easy install and I see much cooler temps now.
torey s.
Great product, great instructions and easy to install!!
Adam S.
Lower temps, who wouldn’t want that.
mark g.
I just finished installing and what a improvement. Now for the record it’s 80 outside… the real test will bee when i’m pulling the trailer.
Corey C.
Old thermostat out, and new one in, running temps have not been above 183 since I installed. So far all the SPE upgrades have been really high quality.
Fred B.
High flow....low temp. Does exactly what it says it does. We pull in 100+ degree weather and the highest I see the oil and Transmission now is about 207 and 203 respectively in that heat pulling 8,000 lbs. If I did not have this then those temps would be a lot higher for sure. Great product!
Perry M.
I pull a 12000 lb 5th wheel as well as construction equipment and needed a cooler running diesel motor for better performance.
Scott G.
I have a 2017 F350 with 410 gears it would normally run 200 2 to 210 with every day general driving now it stays 180 to 185. This should really help when towing my 44 foot fifth wheel.
Jonathan D.
Installed my SPE Low temp High flow thermostat and I love it!
Pulled a load of hay and my 2011 F-350 ran way cooler then before, it dropped my Transmission and oil temperatures about 10 degrees. I definitely recommend buying this SPE Thermostat. GREAT PRODUCT!
John S.
Thermostat works excellent. Very happy with it. The only problem was it was on back order and took me four months to get it, but it was worth the wait.
Troy F.
Fit like a champ.
Great product.
Kevin M.
A must have for these torque monster 6.7’s!!!
Tranny much happier at lower temp ranges, especially in the very humid coastal region that I work and travel.
Jerad E.
Great replacement
Andrew S.
Well built. Works as advertised.
Cody B.
Love the part fast shipping
Ryan R.
Easy install and does exactly what it says it does
Brandon W.
Love how cool it keeps my trans temp way lower than before
Gary C.
New to the diesel world with a 2015 F350 DRW. Installed the Thermostat without comparing before and after as I wanted to make the upgrades before hauling. Ran the truck to Tucson and Prescott from California to pick up a new horse trailer. No problems whatsoever. Then ran the truck under load running to Northern CA for Turkey Day. Again, no issues whatsoever. The truck ran exceptionally cool while running up the Grapevine towing 15k+ lbs. on the bumper and it ran perfectly.
Not sure if the product did what it was supposed to do however, the temperature on motor and trans worked perfectly. Definitely support the product as it is an easy install, even for a Diesel virgin!
Tytus B.
Dropped the temps dramatically. Trans and oil temp barely ever see over 185° now. Very impressed
Edye R.
Really easy to install. Saw the difference and the first test drive.
Adam A.
After oil temps shot up to 235+ when towing I had to get this! Oil, coolant, and trans temps are back where they should be now that it's installed. I bought two at the same time and gave one as a gift to a friend :)
Leopoldo Q.
Great product !! Wish I had done the thermostats sooner.
Ken J.
2017 Ford F350 Lariat -6.7 Powerstroke
Bought the SPE thermostat designed for the Powerstroke as I was having issues pulling my 40' triple axle 5th wheel during the summer when outside temps would get above 95 degrees.
I was going to flush all of the fluid, replace a couple hoses and make sure system was in good shape - when I ran across the SPE Thermostat. After reading the reviews, it seemed like a "no brainer", so I bought it.
I have installed the new SPE Thermostat and have nothing but good things to say.
Super fast shipping - got the part in like 2 days.
Super easy install - only had to pull 3 bolts on top of the motor.
Engine oil temps before installing were running 199-201 (not pulling trailer, highway driving at about 75mph, and with OAT of about 75 degrees).
Engine oil temps after install dropped to 181-183 right away under same conditions.
Can't wait to see the change in the summer pulling the trailer, but I am sure it will make a huge difference.
Well worth every penny!!
Juan H.
Great product, no problems with the install. Truck seems to run a little cooler.
Robert H.
Great product and would recommend this to everyone with a 6.7.
john s.
works as advertised noticed about 10 to 12 degree drop in temps oil, transmission, and coolant temp gauge.
Chuck M.
Absolutely thrilled with the immediate drop in temps on my 17 F350. The running temps average about 14-17 degrees cooler than I experienced with the factory thermostat. It will be a big help in keeping the oil temp a little cooler when towing a trailer over the mountains.
Matt H.
Trans engine and oil all run about 15Degrees cooler than oem
kyle w.
The high flow low temperature thermostat fit great on my 2017 F350! On average the trans temperature and oil temp were 15 degrees cooler. Thanks SPE for another solid product!
Zane C.
Dropped my oil temps by 10 degs. This is exactly what my truck needed.
Thomas R.
Great experience all the way around
DAN H.
20 degree temp drop for oil and coolant temps. Worth every penny
Roy H.
Installing this part was straightforward. Fitment was great. Haven't had to tow with it yet to see temps.
Troy K.
Excellent product! Works as described. Temp levels in trans 10-12 degrees cooler on average. Oil temp 12-15 degrees cooler on average. I’m satisfied. Thanks SPE
Tyler T.
Definitely needed a new one! Truck runs at 165-170 and oil temp is at 176 at idle and 187 at 85mph cruising. Definitely recommend
Karl B.
Working like advertised, keeping the engine cooler, and the engine oil cooler. Will help when towing in higher temperatures up ling steep grades and mountains.
Jared F.
My trans temp went down 28* and truck runs way cooler. So stoked.. great product.
Cody C.
Great product. Installed easily and is a huge help towing on the 6.7 PSD
Francis T.
Tried and true! Towing a 14k lbs boat on a weekly basis and this just gave me an assurance to not overheat for more boat hauling days to come! Thank you SPE!
Steve W.
Receive item quickly, installed in about 1hr. prior to installation took temp and transmission readouts. After hitting the highway for about an hour, looked at temps for both. Water temp was 7 degrees below and transmission temp was 6 degree's below what I normally saw. Will be traveling with 40ft 5th wheel first week in October. That will be the real test since there are a lot of hills on our route to Oklahoma City, will let you know the outcome. Installation was done to my wife's 2017 Ford F350 dually.
John W.
Unprecedented communication after the sale with shipping information email and text. Easy install and engine and trans temps saw a drastic decrease towing our 45’ LQ horse trailer at interstate speeds
matt r.
Worked as advertised.
matthew r.
Worked as advertised.
jeff d.
Dropped coolant levels as described. Was hoping it would drop Transmission temps but it did not.
Jerrid G.
I put this thermostat on my 2013 6.7 and loved it so naturally it was my first mod to my new truck and let me say it still doesn’t disappoint. Ford says these engines normal operating temp is 220-240 that’s just crazy to me. I just took a 900 mile trip pulling a horse trailer with 2 horses in it in mid august in Texas where temps get 105 easy outside and oil never got over 205 trans 203 was the high and coolant 187 such a work of art heat is a killer and this bad boy keeps it nice and cool
Jonathan B.
Great packaging, quick shipping. Obviously a thermastat isn't a difficult install. The actual difference is immediate. It does exactly what they list. Works flawlessly and 100% love the purchase. Everyone needs this, if you are reading this... just buy it already!
Brody W.
Product works great. Engine oil remains 13-15 degrees cooler at 188, trans 20-25 degrees cooler at 175, and coolant temp remains around 177-180 no matter how heavy my foot is into the pedal. Excellent product!!
Daniel M.
New low temp thermostat works great! Did exactly what I wanted, lowered coolant and oil temps over 20-25 degrees during normal driving and 10-15 when towing. Fast shipping too.
Shawn F.
Headed to Colorado!
Corey G.
I wish all companies were this responsive and produced great products like these folks.
Look forward to doing business again.
Jordan H.
This product shipped very fast, the fitment was flawless and the install is easy, my temperatures have dropped on average 15 to 20° unloaded and 10 to 15° loaded. I tow heavy daily up to 7000 miles a month This products has been a great purchase at a great price.
Anthony A.
The Ford 6.7 SPE thermostat is the real deal. I live in South Texas where its hot then a well you know.
This thermostat drops engine temp!
oil temp from 204f to 180f
trans temp from 180f to 160f
Best money you will spend on a 6.7 Ford
Scott S.
Purchase one for my ‘11 F-350. 20 minute install. Waited a while to post until I tested it. Engine is constantly 20 degrees cooler. Hauling Arctic Fox 990, and towing 14’ dump trailer w/ Polaris General 4seat. Best $67 I’ve spent on my truck. Bought another one for my father-in-law‘s 2012 F-350. Same performance. Thanks SPE
John H.
Love your products. Awesome
Emmet T.
Put the thermastat in does exactly what they advertise easy install as well
Spencer C.
I would typically run around 215 to 220 on these hot southern days hauling a trailer and with the high flow low temp thermostat I run between 185 and 195. Feel a lot better with these temperatures.
Kenny R.
Easy install! Already noticed the difference
Bradley W.
Awesome product, very satisfied with it and look forward to buying more product from spe.
jason p.
Seems to have dropped oil temps a lot. Roughly 25 degrees empty. Trans temps are still higher than I’d like. Replaced the factory cooler they’re lower but this trans just inherently runs hot. Added the mishimoto aux add on cooler and we’re now at 195-205 loaded with 10k
Mark L.
Works as described, oem fit and easy install. Temperature is now reading slightly below half on gauges.
Brett Y.
Truck runs a lot cooler and efficient since the install. Works great and love it
Hunter M.
Quick and simple to change out. Instant cooler temps on oil and coolant. Being a 2011 model 6.7 trans temp won’t change but overall happy with SPE’s products
Ronnie R.
Install was real easy. Temp drops as stated. Definitely a must have.
William M.
Just what I ordered great product
Ryan W.
Best coolant upgrade other Thad radiator and coolers. Towing up and down grades this really performed excellent. Trans temps stayed cooler and consistent.
Perry M.
Engine runs cooler and easy install, total installation 30 minutes.
weston m.
5 min install. Temps are perfect! Very easy & simple upgrade. Very happy!!
Matthew W.
Easy Install! Truck is running about 10 degrees cooler. I would definitely recommend.
Noel J.
Fit perfectly and truck does run cooler....
David A.
Great thermostat my 6.7 powerstroke runs about 15-20 degrees cooler pulling my momentum 397th toy hauler that weighs 18,000. Would highly recommend
Ferris T.
Dropped me trans and coolant temp by 10+ well worth it
JACKIE B.
Delivery was fast and ahead of time.
Elliott R.
We operate In the central California heat. Engine temps are consistently 10 degrees lower. Would highly recommend. SPE was very responsive and product was shipped when promised and product was received in good condition.
Brian M.
Exactly what I ordered and works well
ChrisChris H.
Original one had 260k and was time to upgrade the thermostat. I love the cooler temperatures.
jared y.
Works very well! My truck runs somewhere close to 20 degrees cooler than it was with the stock thermostat! I feel it is a very good buy!
Kim S.
Easy to install, the engine 20 degrees cooler.
Zachary B.
Put it in and am. My temperature are at least 15 to 20 plus cooler for sure trans at least 10 to 15 but I am running 4.10S with the 10 speed
Stefano B.
It really works!!! Hauling 13000 pounds my temperature wont go above 210 and I live in Colorado
glenn p.
Install when good. Haven’t tested yet.
Marcus M.
Engine runs 30°-40° Cooler. Awesome product.
Tracy S.
Firm believer in this product! Left the house with over 1300lbs went to Hurricane Utah anyone that’s ever been out there knows when you get west of Denver Colorado it’s some serious hills to pull! First big bull in hot weather was 226 degrees trans was 230 hit the bottom at 65mph dropped to 58mph on a continuous pull rest of the way across interstate 70 and interstate 15 going south never got above 219 on pulls. Last time across there on stock thermostat had to keep backing out because truck was getting hotter than I was comfortable with! Next trip hopefully I will have there transmission proprietary solenoied installed and give it hell to see what it does!
Armaund G.
2017 F250
Temperature has really dropped!!! Love it.
Chris L.
Product was exactly as intended. SPE was in contact the entire process and very fast with shipping. Installed within minutes and is working amazing and would definitely recommend to anybody as I’m in Texas with those good high temps while hauling in the summer.
Tim B.
Makes a big difference! Running 20 degrees cooler! Great folks and great products! SPE All the way!
Gavin S.
Super easy install. My truck runs 170 degrees on the coolant and 180 degrees on the oil
Sidney T.
2021 f450 hauling 2021 keystone avalanche 395bh. From Nashville tn, to Asheville North Carolina. Lots of mountain terrain. Oil temp never exceeded 195, trans temp stayed around 200. The coolant temp stayed around 185. I'm happy with the results.
Ron S.
We had to make a midnight ride to Corsicana, Texas trailering a Tahoe to a friend that needed a vehicle because his had broken down mid trip. We delivered the Tahoe, loaded up a dead Mustang for the return trip. All nighter, 70-75 mph, no loss of mpg loaded or unloaded, and the truck ran amazingly cool. Well worth the few dollars and the thirty minutes installation time. Every 6.7 needs one.
Gary M.
My 2012 defueled when it got to 220 on the water temp. I was in "Mexico" WOT for longer than normal and it was a warm day. So I researched thermostats, read the SPE R&D article and it sound like exactly what I needed. Next time WOT in "Mexico" WOT for extended period it stayed much cooler. I was watchin water and oil temperature on a mini maxx in both cases
seems to be an average offset in temps on my truck by 20 degrees on the water temp in normal driving conditions and the oil temp balances out at 180. you can tell it flows better because if it does heat up from WOT it comes back down very quickly and when it goes up its not even reaching what was normal with the stock t stat
