What is the torque on the strut nut on a Ford f150?
There isn’t a single universal torque value for the Ford F-150’s strut nut. The correct torque depends on the truck’s model year, engine, and whether you’re tightening the upper strut retaining nut or the lower bolts that secure the strut to the knuckle. Always consult the exact Ford workshop manual for your vehicle to get the precise specification.
In practice, front MacPherson‑strut setups follow general ranges, but these can vary with year and configuration. This article explains how to locate the exact spec for your truck and provides commonly cited reference ranges as a guide while you verify the exact figures.
Locating the exact torque spec for your F-150
To ensure you torque the strut properly, identify your specific F-150’s year and engine, then reference Ford’s official documentation or credible repair databases for the precise figures.
- Identify the model year and engine configuration of your F-150 to ensure you’re using the correct spec sheet.
- Access the official Ford Workshop Manual (FSM) or service bulletins for that year/engine; look in the suspension or front-end torque specifications section.
- If you don’t have the FSM, use reputable repair databases or trusted repair manuals (e.g., Alldata, Mitchell1, Haynes/Chilton) that list the exact torque values for the upper strut nut and the lower mounting bolts.
- Differentiate between the upper strut retaining nut and the lower strut-to-knuckle bolts, as each has its own torque value.
- Torque with a properly calibrated wrench and re-check the fasteners after an initial seating period if the FSM recommends it.
By following these steps, you’ll ensure you apply the correct torque for your specific truck configuration and avoid under- or over-tightening components that could compromise suspension performance.
Factors that influence the torque value
The exact torque depends on several factors, including the generation of the F-150, whether the front struts are plain steel or aluminum components, and the design of the upper mount. Engine type and whether you’re installing new hardware or reusing existing fasteners can also affect the specification. Always confirm with the official manual for your exact year and engine.
Common torque ranges (approximate, for reference only)
These ranges are commonly cited in service literature for various F-150 generations. They are not a substitute for the exact specification in your FSM, which can differ by year and engine.
- Upper strut retaining nut (the nut that clamps the strut to the upper mount): roughly 25–40 ft-lbs (34–54 Nm).
- Lower strut bolts that attach the strut to the steering knuckle: roughly 90–140 ft-lbs (122–190 Nm).
Concluding note: Use these ranges only as rough reference, and always verify the precise values for your specific year and engine. Incorrect torque can lead to poor suspension performance or component failure.
Additional installation and safety tips
Follow these best practices to ensure a safe and correct installation when working on the F-150’s front suspension.
- Perform work with the vehicle on a level surface and the wheels chocked for safety.
- Inspect hardware for wear or damage; replace any questionable fasteners with OEM-spec parts.
- Torque in a clean bolt hole, and ensure threads are undamaged before reassembly.
- After completing the installation, verify proper alignment and consider a wheel alignment check if components were disturbed.
If you’re unsure about the exact spec for your year, don’t guess—consult the FSM or a qualified technician to avoid compromising ride quality or safety.
Summary
The torque specification for the Ford F-150 strut nut is not universal. It varies by model year, engine, and whether you’re tightening the upper nut or the lower mounting bolts. Always consult the specific Ford Workshop Manual for your truck to obtain the exact torque value. Use approximate ranges only as a rough guide and verify with the official documentation to ensure safe, proper installation.
