What size is the oil drain plug on a 2018 Toyota Highlander?
The 2018 Highlander uses a standard oil drain plug with M14 x 1.5 thread and a 14 mm hex head. This means a 14 mm socket or wrench is typically used to remove and reinstall the plug.
Key measurements you should know
Below are the essential specifications and practical notes that apply when servicing the Highlander’s oil pan.
- Thread size: M14 x 1.5
- Hex head size: 14 mm
- Recommended tool: 14 mm socket/wrench for removal and installation
- Crush washer: Replace with a new washer each time you drain the oil
Using the correct thread and hex size helps ensure a proper seal and minimizes the risk of cross-threading or stripping the oil pan.
Where to locate the drain plug and what to expect during service
The oil drain plug is located on the underside of the engine oil pan. To service the plug safely, you’ll typically support the vehicle on jack stands, place a drain pan underneath, and loosen the plug slowly to let the oil drain before reinstallation with a new crush washer.
Additional tips for a smooth oil change
Always consult the vehicle’s owner’s manual or a factory service manual for the exact torque specification and any model-specific notes. If you’re unsure or encountering a stubborn plug, consider having the oil change performed by a professional to avoid damage.
Summary
The 2018 Toyota Highlander uses an M14 x 1.5 threaded oil drain plug with a 14 mm hex head. Replace the crush washer each time you drain the oil, use a 14 mm tool to tighten, and refer to the manual for torque specifications to ensure a proper seal and safe maintenance.
What size is the thread on a Toyota oil drain plug?
M12 x 1.25
Notes: Engine Oil Drain Plug. M12 x 1.25 thread.
What size socket is the oil drain plug?
There is no single socket size for all oil drain plugs, as it varies by vehicle, but common metric sizes are 13mm, 14mm, 15mm, 17mm, and 19mm. To find the correct size, check your vehicle's owner's manual or a set of assorted metric sockets if unsure.
This video shows how to use different tools to remove an oil drain plug: 1mOn The WorkbenchYouTube · Nov 1, 2024
Common sizes
- Metric: The most common sizes for passenger vehicles are between 13mm and 17mm.
- SAE: Some older or specialty vehicles may use SAE (inch) sizes, which are often fractional (e.g., 3/8" or 1/2").
- Specialty: Some plugs might have a square opening, a hex (Allen/Allen key), or a Torx (star) shape instead of a traditional bolt head.
How to find the right size
- Check your owner's manual: This is the most reliable source for your specific car.
- Use a socket set: Start with common sizes like 13mm, 14mm, 15mm, and 17mm. A 6-point socket is best as it grips the bolt head more securely.
- Visit an auto parts store: You can tell them your vehicle's make and model, and they can look up the correct size.
- Try a universal set: If you frequently change the oil, consider buying a specialized oil drain plug socket set that includes common metric and SAE sizes.
This video explains the importance of using the correct tool to remove an oil drain plug: 1mYour Home GarageYouTube · Nov 24, 2022
What size is the drain plug on a 2018 Toyota Highlander?
The 2018 Toyota Highlander oil drain plug has a size of M12-1.25 for the thread size, and it requires a 14mm socket or wrench to remove the plug, according to AutoZone.com and Advance Auto Parts.
- Thread size: M12-1.25
- Socket/Wrench size: 14mm
What size is the drain bolt on a Toyota Highlander?
Housing. Then remove it the rest of the way by. Hand remove the old filter and the two O-rings from the housing.
