Standard Ignition Automatic Transmission Control Solenoid P/N:TCS309
Tackle a shifting problem without replacing the entire valve body using the Standard Ignition Transmission Control Solenoid TCS408. It installs as a direct-fit OE replacement for the 2011-2023 Ford F-250 Super Duty, 2011-2020 and 2022 Ford F-350 Super Duty, 2011-2023 Ford F-450 Super Duty and 2011-2023 Ford F-550 Super Duty. It also fits the Ford medium-duty and motorhome chassis applications listed below.
This automatic transmission control solenoid is an electrically operated valve. The vehicle's control module switches it to direct transmission fluid within the valve body, which helps manage how and when the transmission shifts.
Signs this part may need replacing: harsh, delayed or erratic shifts, slipping, a transmission stuck in one gear, or a check engine light with transmission-related codes. Diagnose the cause first. If a faulty solenoid is behind the symptom, this part replaces it.
Fitment: 2011-2023 Ford F-250 Super Duty; 2011-2020 and 2022 Ford F-350 Super Duty; 2011-2023 Ford F-450 Super Duty; 2011-2023 Ford F-550 Super Duty; 2016-2019 and 2021-2023 Ford F-750; 2016-2022 Ford F-53 Motorhome Chassis; 2017-2019 and 2021-2023 Ford F-650. See the Buyer's Guide tab for engine details.
Interchange: TCS331 · TCS951 · BC3Z7G383V
This part cross-references / interchanges with the following part numbers:
What does a transmission control solenoid do?
It is an electrically controlled valve that the vehicle's control module switches on and off. It directs transmission fluid within the valve body, which helps manage shift timing and engagement.
Which trucks does TCS408 fit?
It fits the 2011-2023 Ford F-250, F-450 and F-550 Super Duty and the 2011-2020 and 2022 Ford F-350 Super Duty. It also fits listed Ford F-650, F-750 and F-53 Motorhome Chassis years; see the Buyer's Guide tab for details.
Do I need to replace the whole valve body?
Not necessarily. If diagnosis confirms this solenoid is the failed component, replacing it on its own can help you avoid the cost of a complete valve body.
What are signs of a failing transmission solenoid?
Harsh, delayed or erratic shifts, slipping, being stuck in one gear, or a check engine light with transmission codes can signal a solenoid problem. Confirm the cause before replacing parts.
What part numbers does TCS408 interchange with?
TCS408 interchanges with TCS331, TCS951 and BC3Z7G383V.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.