The Mishimoto 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 valve acts as a thermostat, restricting fluid flow to the external transmission cooler until temperature is reached, but the factory units commonly stick closed and overheat the transmission. This CNC-machined billet aluminum replacement adds a heat-sink design for improved dissipation, a serviceable thermostat that opens at the stock 160°F (71°C) and accepts any Mishimoto thermostat, plus an installable bypass insert for constant cooler flow in extreme driving or hot climates. Installs in about an hour and connects directly to all factory cooler piping. Black anodized, backed by the Mishimoto Lifetime Warranty.
| Brand | Mishimoto |
| Type | Transmission thermal bypass valve kit (thermostatic) |
| Transmission | ZF 8HP automatic |
| Material | CNC-machined billet aluminum, black anodized |
| Thermostat | Opens at 160°F (71°C); serviceable, with installable full-bypass insert |
| 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 |
