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FSD25 WINNER: Emerson Garcia, Gonzales, LA. BMT #3 WINNER: Eric Dassinger, Wichita Falls, TX.
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Mishimoto

Mishimoto 15-19 BMW M3/M4 Racing Thermostat - 100C

SKU: MISMMTS-F80-15
$147.99

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The Mishimoto racing thermostat for the BMW M3/M4 2015+ F8X and G8X is designed to help your cooling system operate at peak efficiency, whether you're cruising to your local car meet or tearing up the track. Our thermostat begins to open 9F (5C) earlier than the stock thermostat at 212F (100C). That allows precious coolant to flow into the radiator and start shedding heat sooner. Couple this thermostat with a Mishimoto performance aluminum radiator and you have the recipe for an engine that runs cool no matter the situation. This thermostat includes an OEM-quality housing and like all of our thermostats, this BMW M3/M4 2015+ F8X and G8X thermostat is backed by our Mishimoto Lifetime Warranty.

  • Allows cooling system to operate at peak efficiency
  • Includes cast aluminum thermostat housing
  • Begins opening 9F (5C) earlier than stock

This Part Fits:

Year Make Model Submodel
2017 BMW 530i Base
2017 BMW 540i Base
2004-2005 BMW 545i Base
2006-2016 BMW 550i Base
2010-2015 BMW 550i GT Base
2010-2017 BMW 550i GT xDrive Base
2011-2016 BMW 550i xDrive Base
2004-2005 BMW 645Ci Base
2006-2010,2012-2018 BMW 650i Base
2013-2019 BMW 650i Gran Coupe Base
2012-2018 BMW 650i xDrive Base
2013-2019 BMW 650i xDrive Gran Coupe Base
2002-2005 BMW 745i Base
2002-2005 BMW 745Li Base
2011-2012 BMW 750i ActiveHybrid
2006-2015 BMW 750i Base
2010-2015 BMW 750i xDrive Base
2011-2012 BMW 750Li ActiveHybrid
2006-2015 BMW 750Li Base
2010-2015 BMW 750Li xDrive Base
2004-2006 BMW 760i Base
2023-2024 BMW 760i xDrive Base
2003-2008,2010-2015 BMW 760Li Base
2015-2019 BMW Alpina B6 xDrive Gran Coupe Base
2007-2008,2011-2015 BMW Alpina B7 Base
2011-2015 BMW Alpina B7 xDrive Base
2011-2015 BMW Alpina B7L Base
2011-2015 BMW Alpina B7L xDrive Base
2023 BMW Alpina XB7 Base
2016-2018,2023 BMW M2 Base
2019-2021 BMW M2 Competition
2020 BMW M2 CS
2015-2018,2021-2025 BMW M3 Base
2021-2025 BMW M3 Competition
2022-2025 BMW M3 Competition xDrive
2024 BMW M3 CS
2015-2025 BMW M4 Base
2021-2025 BMW M4 Competition
2022-2025 BMW M4 Competition xDrive
2019-2020,2025 BMW M4 CS
2023 BMW M4 CSL
2016 BMW M4 GTS
2013-2016,2018-2023 BMW M5 Base
2019-2021 BMW M5 Competition
2022 BMW M5 CS
2020 BMW M5 Edition 35 Years
2012-2018 BMW M6 Base
2014-2019 BMW M6 Gran Coupe Base
2017-2022 BMW M760i xDrive Base
2020 BMW M8 Base
2020,2022-2025 BMW M8 Competition
2020-2021 BMW M8 Gran Coupe Base
2020-2025 BMW M8 Gran Coupe Competition
2020-2024 BMW X3 M
2020-2022 BMW X3 M Competition
2020-2024 BMW X3 M40i
2025 BMW X3 M50 xDrive
2025 BMW X3 xDrive30
2020-2025 BMW X4 M
2020-2022 BMW X4 M Competition
2020-2025 BMW X4 M40i
2007-2008 BMW X5 3.0si
2004-2006 BMW X5 4.4i
2007-2008 BMW X5 4.8i
2004-2006 BMW X5 4.8is
2010-2013,2015-2018,2020-2023 BMW X5 M
2020,2024-2025 BMW X5 M Competition
2020-2023 BMW X5 M50i
2024-2025 BMW X5 M60i
2009 BMW X5 xDrive30i
2009-2010 BMW X5 xDrive48i
2011-2020 BMW X5 xDrive50i
2010-2011 BMW X6 ActiveHybrid
2010-2023 BMW X6 M
2020-2021,2024-2025 BMW X6 M Competition
2020-2023 BMW X6 M50i
2024-2025 BMW X6 M60i
2008-2019 BMW X6 xDrive50i
2023-2024 BMW X7 M60i
2025 BMW X7 xDrive40i
2023-2025 BMW XM Base
2024-2025 BMW XM Label

Customer Reviews

Overall rating: 4.7 / 5 from 529 reviews.

Customer photo review of FSD 03-09 Dodge Cummins Billet Heat Exchanger

The billet heat exchanger looks great and is machined nicely. No worries about an internal failure allowing fluids to mix. It seems to be doing its job. It's more robust than the factory style cooler but I don’t believe it is quite as efficient based on warm up times I’m seeing. My only gripe is the bracket mounting bolts, they thread directly onto the cooler instead of passing all the way through and securing with nuts. Make sure to use thread locker along with the lock washers. As a rough guide, torque for M8 fasteners in aluminum should be 11-15 ft lbs, no torque spec is listed for the mounting hardware in the instructions.

Charles H. 4/5 Verified

FSD 03-09 Dodge Cummins Billet Heat Exchanger

Customer photo review of FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

It’s not bad, I was in a bind and needed a quick fix to get my truck back going. So first things first, the kit works. You can get rid of the steel lines and these will take their place. With about an hour and a half and a little research it doesn’t take much to get these hoses installed. However, I have some gripes about this kit. 1. You have to be very careful about how the lines are run to prevent the hose from kinking. 2. There are no p clamps or hardware included to hold the lines in place. To improve this kit, I’d toss some hose clamps, a couple bolts with some p clamps to hold the hose, maybe a couple pictures on where to run things too, or even total install instructions. Stiffer hose would be good too, in my pictures you can see that the hose going to the front of the engine is trying to kink as it makes the bend to run beside the turbo.

Noah T. 3/5 Verified

FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

Customer photo review of Kingspeed Billet Front Cover 94-02

It came with no gaskets this item deff needs to be sold with cover gasket as well as the seal for the crank even a plug for the vent or a fitting to hook a tube to the vent. Didn’t come with shit but bolts. Now I got to track everything else down seperatly makes it a pain in the ass. At this point I’d rather have stayed stock

Jacob M. 3/5 Verified

Kingspeed Billet Front Cover 94-02

Customer photo review of FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

I installed them when I built my transmission. Hoses are good quality but fittings felt kind of cheap. Not a bad kit at all. I’d recommend it to anyone. Substantial trans temp difference after putting them on. My trans runs a lot cooler now that I’ve bypassed the heat exchanger. 2012 ram 2500 with 68rfe. 9/10 would recommend. Just be gentle with the fittings

Max F. 4/5 Verified

FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

Customer photo review of FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

I installed this cooler and a few weeks later got into a wreck that was able to damn near total my truck, the frame is bent in 4 places and it shifted my ranch and bumper a foot. This cooler was the only radiator that survived everything else was destroyed and wrapped around the cooler. I called customer support and was able to order new stainless steel brackets and this cooler will live again. I’m very impressed with the quality and strength of this part and would gladly buy it for another truck.

Fritz G. 5/5

FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

Customer photo review of Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

I love the product. I am just upset that it wasn’t clear it doesn’t come with any hardware. I currently have no clue what barb fittings and hose sizes I need to get for the valve cover to my catch can. I am currently using a hardware store setup as this is my first Cummins and my first quality build of a truck. If there’s anyway you could assist me or point me in the right direction that would be awesome. Aside from that I’ve had nothing but compliments on it, I actually won top 10 truck and SCT x GFP in Nashville a few weeks back. Everyone including myself love the valve cover.

Caleb H. 3/5 Verified

Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

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