What size thread is a Lexus ES 350 shift knob?
Typically, the Lexus ES 350 shift knob threads on with a standard metric size, most commonly M12x1.25. Exact size can vary by model year and installation method.
Variations by generation and setup
Across the ES 350’s generations, shift knob designs and their mounting hardware have seen changes. Some years and trims use OEM knobs with a specific thread, while aftermarket replacements may adopt a more common standard. This means the exact thread pitch and diameter can differ between model years and between original equipment versus replacement parts.
Common thread sizes you may encounter
To guide replacement shopping, here are sizes that have appeared on various ES 350 shifters and similar Toyota/Lexus models. If your car isn’t listed here, check the service manual or measure the thread directly.
- M12 x 1.25 (the most commonly used size on many Toyota/Lexus transmissions)
- M12 x 1.5
- M10 x 1.25
- M8 x 1.25
These sizes reflect typical OEM and aftermarket scenarios. Using the wrong thread size or pitch can damage the shifter or knob, so accuracy matters.
How to verify your exact size
Follow these steps to confirm the correct thread size on your ES 350 shift lever before purchasing or installing a replacement knob.
- Inspect the knob for how it attaches—some twist on, others are secured with a set screw.
- If the knob unscrews, remove it carefully to access the underlying threads or mounting surface.
- Measure the diameter of the threaded portion with calipers or a precise ruler (look for approximately 10 mm, 12 mm, or 14 mm as a starting point).
- Determine the pitch using a thread gauge or by comparing to known metric pitches (such as 1.0, 1.25, 1.5).
- Consult the vehicle’s owner’s manual, a Lexus dealer, or a trustworthy service bulletin for the exact specification for your VIN and year.
Accurate measurement helps prevent cross-threading and ensures a secure, proper fit when you install a new knob.
OEM vs aftermarket considerations
OEM shift knobs are designed to match the factory thread size for the ES 350 generation. Aftermarket knobs often aim for broad compatibility, frequently using a standard size like M12x1.25, but there is variability. If you’re buying aftermarket, double-check the advertised size against your car’s spec and consider adapters if needed. When in doubt, confirm with a dealer or a trusted shop before purchasing.
Summary
In practice, the shift knob on a Lexus ES 350 typically uses M12x1.25 threading, but variations exist by generation and whether the knob is OEM or aftermarket. To avoid fit issues, verify the exact size for your specific vehicle through measurements, manuals, or professional confirmation. A correctly matched thread ensures a secure, long-lasting replacement.
