The Mishimoto full-flow thermal bypass valve kit replaces the failure-prone factory bypass valve on 2012-2024 Mopar models running the ZF 8HP automatic — Charger, Challenger, Chrysler 300, and Ram 1500 TRX. The stock thermostatic valve blocks fluid from the cooler until the transmission warms up, but when its thermostat fails the transmission overheats, and in hot climates the valve is simply a needless flow restriction. This all-aluminum CNC-machined full-flow valve eliminates the thermostat entirely, pumping fluid through the cooler the moment the vehicle starts for constant cooling — ideal for hot climates, extreme driving, or towing heavy loads. Installs in under an hour and removes the stock failure point. Backed by the Mishimoto Lifetime Warranty.
| Brand | Mishimoto |
| Type | Full-flow transmission thermal bypass valve kit |
| Transmission | ZF 8HP45 / 845RE automatic |
| Material | CNC-machined billet aluminum, black anodized |
| Function | Full-flow (no thermostat); constant cooler flow |
| Warranty | Mishimoto Lifetime Warranty |
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2012-2014 | Chrysler | 300 | Base |
| 2012-2020 | Chrysler | 300 | C |
| 2012-2014 | Chrysler | 300 | C Luxury |
| 2015-2017 | Chrysler | 300 | C Platinum |
| 2012,2015-2020 | Chrysler | 300 | Limited |
| 2012-2021 | Chrysler | 300 | S |
| 2012-2014 | Chrysler | 300 | SRT8 |
| 2013 | Chrysler | 300 | SRT8 Core |
| 2018-2021 | Chrysler | 300 | Touring |
| 2018-2021 | Chrysler | 300 | Touring L |
| 2016 | Dodge | Challenger | 392 Hemi Scat Pack Shaker |
| 2017-2021 | Dodge | Challenger | GT |
| 2012-2021 | Dodge | Challenger | R/T |
| 2017-2019 | Dodge | Challenger | R/T 392 |
| 2012 | Dodge | Challenger | R/T Classic |
| 2015-2016 | Dodge | Challenger | R/T Plus |
| 2016 | Dodge | Challenger | R/T Plus Shaker |
| 2016-2021 | Dodge | Challenger | R/T Scat Pack |
| 2021 | Dodge | Challenger | R/T Scat Pack Shaker Widebody |
| 2019-2021 | Dodge | Challenger | R/T Scat Pack Widebody |
| 2016 | Dodge | Challenger | R/T Shaker |
| 2014 | Dodge | Challenger | Rallye Redline |
| 2015 | Dodge | Challenger | Scat Pack |
| 2015-2018 | Dodge | Challenger | SRT 392 |
| 2018 | Dodge | Challenger | SRT Demon |
| 2015-2021 | Dodge | Challenger | SRT Hellcat |
| 2019-2021 | Dodge | Challenger | SRT Hellcat Redeye |
| 2019-2021 | Dodge | Challenger | SRT Hellcat Redeye Widebody |
| 2018-2021 | Dodge | Challenger | SRT Hellcat Widebody |
| 2020-2021 | Dodge | Challenger | SRT Super Stock |
| 2012-2014 | Dodge | Challenger | SRT8 |
| 2012-2021 | Dodge | Challenger | SXT |
| 2012,2015-2018 | Dodge | Challenger | SXT Plus |
| 2017-2018 | Dodge | Challenger | T/A |
| 2017-2018 | Dodge | Challenger | T/A 392 |
| 2021 | Dodge | Challenger | T/A 392 Widebody |
| 2017-2018 | Dodge | Charger | Daytona |
| 2017-2018 | Dodge | Charger | Daytona 392 |
| 2018-2021 | Dodge | Charger | GT |
| 2018 | Dodge | Charger | GT Plus |
| 2012-2021 | Dodge | Charger | Pursuit |
| 2012-2021 | Dodge | Charger | R/T |
| 2017-2018 | Dodge | Charger | R/T 392 |
| 2015-2016 | Dodge | Charger | R/T Road & Track |
| 2015-2018 | Dodge | Charger | R/T Scat Pack |
| 2019-2021 | Dodge | Charger | Scat Pack |
| 2020 | Dodge | Charger | Scat Pack 392 Widebody |
| 2012-2017 | Dodge | Charger | SE |
| 2015-2018 | Dodge | Charger | SRT 392 |
| 2015-2020 | Dodge | Charger | SRT Hellcat |
| 2021 | Dodge | Charger | SRT Hellcat Redeye Widebody |
| 2020-2021 | Dodge | Charger | SRT Hellcat Widebody |
| 2012-2014 | Dodge | Charger | SRT8 |
| 2012-2021 | Dodge | Charger | SXT |
| 2012,2018 | Dodge | Charger | SXT Plus |
| 2018 | Dodge | Charger | SXT Plus Leather |
| 2021-2024 | Ram | 1500 | TRX |
| 2021 | Ram | 1500 | TRX Launch Edition |
