Ford quietly redesigned the thermostat in 2022...replace it

[zak99b5]

Did you buy your 180F thermostat from ebay?

OEM FORD MOTORCRAFT 61MM 180° F COOLANT THERMOSTAT BR3E-8575-BB 7L3Z-8575-D | eBay

Find many great new & used options and get the best deals for OEM FORD MOTORCRAFT 61MM 180° F COOLANT THERMOSTAT BR3E-8575-BB 7L3Z-8575-D at the best online prices at eBay! Free shipping for many products!

www.ebay.com

I don’t remember exactly where I bought it, but it was not on eBay. Thinking Rock Auto or Amazon?. It's a Motorcraft part.

 

[zak99b5]

that new thermostat has a plastic valve ? huh.

Yes. Original is a brass piece. Comparing the two before I installed the new one, I noticed the plastic tail piece slid smoothly. The brass piece would bind sometimes. Not sure if that was causing my higher temps (and warning on dash), but it makes sense.

 

[zak99b5]

Did you buy your 180F thermostat from ebay?

OEM FORD MOTORCRAFT 61MM 180° F COOLANT THERMOSTAT BR3E-8575-BB 7L3Z-8575-D | eBay

Find many great new & used options and get the best deals for OEM FORD MOTORCRAFT 61MM 180° F COOLANT THERMOSTAT BR3E-8575-BB 7L3Z-8575-D at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Just looked at the link you provided—I would not buy that thermostat. It’s got the brass tail piece, which on my original one would bind, causing temps to rise.

Looked in my Amazon history, and there it was. Part number is RT1258, $24.

 

[Hellwig]

Just looked at the link you provided—I would not buy that thermostat. It’s got the brass tail piece, which on my original one would bind, causing temps to rise.

Looked in my Amazon history, and there it was. Part number is RT1258, $24.

Thank you very much for your guidance! Rockauto lists RT1258 as 190F. But the temp number printed on the thermostat clearly shows 82c, which is equal to 180F. Excellent!

 

[GlennSullivan]

Looks like the new style (black bottom) thermostat for 2017 model year 3.5 is RT1255

https://parts.ford.com/shop/SearchDisplay?catalogId=251&langId=-1&storeId=1405&dealerId=22272&krypto=esAikIj%2BxmSSet3gm54QKFIUZeotxHtIRc0GRpKcvV5poFdSRIbnFchOwM7mEHJcfSrbvjoHAtSJ9I%2F9YTueBJ%2F%2BKTheqkCkGd9uDNxMWxAsEqGHk%2FDJ50MP2xyxz2nNAkY1dBHfhHjtBo0MIl8YEsEJTk6jg6JnNh3dmz6tEqfgCNTwUIOJll5kVOhkTMNnTGws90nlkTLfZ%2FlGLGiP1wVqMkvDSK%2FKqcwknix0BWo%3D#facet:&productBeginIndex:0&orderBy:&pageView:&minPrice:&maxPrice:&pageSize:&

 

[wpaul]

Hello all, new to the forum. Regarding this thermostat discussion, would a jet low temperature thermostat be a good option versus the Ford factory part?

 

[Mr Big]

Hello all, new to the forum. Regarding this thermostat discussion, would a jet low temperature thermostat be a good option versus the Ford factory part?

I would always stay with authorized parts, unless you are out of both warranties. But there are many good after market parts available, as well as many bad ones.

 

[apex96]

Hello all, new to the forum. Regarding this thermostat discussion, would a jet low temperature thermostat be a good option versus the Ford factory part?

I run a ford 170 thermostat in mine, keeps trans temp around 165-170 for highway. City driving will see the trans run around 170-175. Thermostat temps range between 165-195 (165 is in down hill sections where I’m coasting and the 195 is when I come off the throttle and it spikes briefly before cooling off rapidly) during mountain driving where the engine is using a lot of boost. Engine coolant typically stays around 180-185 on relatively level ground.

On any thermostat you’ll find that where the temp sensor is, it will read about 10 degrees hotter than the number stamped on the thermostat. The trans will read almost dead-on what the thermostat is rated at.

 

[Polo08816]

I run a ford 170 thermostat in mine, keeps trans temp around 165-170 for highway. City driving will see the trans run around 170-175. Thermostat temps range between 165-195 (165 is in down hill sections where I’m coasting and the 195 is when I come off the throttle and it spikes briefly before cooling off rapidly) during mountain driving where the engine is using a lot of boost. Engine coolant typically stays around 180-185 on relatively level ground.

On any thermostat you’ll find that where the temp sensor is, it will read about 10 degrees hotter than the number stamped on the thermostat. The trans will read almost dead-on what the thermostat is rated at.

What's the Ford part number for the 170 thermostat?

 

[BMW2FORD]

I live up North and went with the improved version but in a 180 degree temp. Part number is BR3E-8575-BB. Trans runs around 185-190 and the engine stays at about 190-195 with this t stat temp. On hard pulls on warm days it will cross to about 205-210 but return back down after the load is lessened. Reason I went with the 180 was for heat in the winter. It’s got plenty even with this temp and couldn’t be happier. I almost think a 170 would be fine as well even for me in the North.

 

[apex96]

What's the Ford part number for the 170 thermostat?

Here’s the thermostat I have.

Reische Performance 170 Degree Performance Thermostat (Gen 2) Ford-50 - 5 Star Tuning

From the manufacturer of this thermostat: O-ring's are no longer included with this product.

5startuning.com

 

[wpaul]

What do you all think about this thermostat? Opens up at 160 deg. and has a lifetime warranty. https://www.jegs.com/i/Mishimoto/69...ION&submodel=MAX+XLT&engine=V6+(+3.5L+/+213+)

 

[Polo08816]

I live up North and went with the improved version but in a 180 degree temp. Part number is BR3E-8575-BB. Trans runs around 185-190 and the engine stays at about 190-195 with this t stat temp. On hard pulls on warm days it will cross to about 205-210 but return back down after the load is lessened. Reason I went with the 180 was for heat in the winter. It’s got plenty even with this temp and couldn’t be happier. I almost think a 170 would be fine as well even for me in the North.

Are you sure that's the right part number? When I search that part number here, nothing shows up:

Search Results | Genuine OEM Ford Parts & Accessories

www.oemfordpart.com

But on the 14th Gen F150 forums, there's a post where someone provides the part number as BR3Z-8575-G:

https://www.f150gen14.com/forum/threads/how-to-improve-pb-cooling.19626/page-3#post-380313

I prefer to use a genuine Ford 180F thermostat than an aftermarket thermostat for 160F-170F.

 

[BMW2FORD]

Are you sure that's the right part number? When I search that part number here, nothing shows up:

Search Results | Genuine OEM Ford Parts & Accessories

www.oemfordpart.com

But on the 14th Gen F150 forums, there's a post where someone provides the part number as BR3Z-8575-G:

https://www.f150gen14.com/forum/threads/how-to-improve-pb-cooling.19626/page-3#post-380313

I prefer to use a genuine Ford 180F thermostat than an aftermarket thermostat for 160F-170F.

It’s correct. All the later Fords use the same style T stat but the part number changes for temp. The 180 is for the Mustangs, HD Ecoboost Police and taxi cars and stuff like that but won’t come up for any Expedition.

 

[BMW2FORD]

It’s correct. All the later Fords use the same style T stat but the part number changes for temp. The 180 is for the Mustangs, HD Ecoboost Police and taxi cars and stuff like that but won’t come up for any Expedition.

 

[Dice Roll]

What does the cooler stat do to mpg? Used to be they had you run a 160 when doing a module tune in order to cause a richer mixture from the “choke” being on. Fooled computer.

 

[SyndicateZ]

airfilter...only use Motorcraft

??

 

[Tricon]

Is it the same as the F150's, just remove the intake tubes above it, 2x8mm bolts and swap it out?

 

[Mr Big]

After reading through this thread, I decided to check my stats. Since I did the FORScan gauge mod, it was easy to see the temps. I have no way of knowing if my stat was changed, but my temp gauge shows a constant 195 degrees engine and 165 to 179 tranny temp. With that said my Expy has the tow package with a larger radiator and cooler. My gas mileage is way more than I expected.

 

[JamusDemus]

Yes, it is an option in Forscan.

Can you tell me or show a photo of where? I can’t find the option.