The engine oil drain plug on a 2014 Honda Odyssey uses a standard M14 x 1.5 thread and is typically loosened with a 17 mm wrench. It also relies on a sealing washer (crush washer) that should be replaced when the plug is removed.
Size details: The oil pan drain plug on the 2014 Odyssey
Understanding the exact size helps prevent cross-threading and leaks during an oil change. The 3.5-liter V6 engine family used in the 2014 Odyssey generally follows Honda’s common sizing for oil drains.
Thread size
M14 x 1.5
Head/drive size
Typically a 17 mm wrench or socket is used to loosen and tighten the drain plug.
When replacing the plug, you’ll also usually need a new sealing washer (crush washer) to ensure a proper seal and prevent leaks.
How to verify the size on your specific vehicle
If you want to confirm the exact size for your particular Odyssey or if you’ve altered parts in the past, follow these checks.
- Consult your owner’s manual or the Honda service information for your VIN—these sources list the correct drain plug size and torque.
- Inspect the current oil drain plug for any size markings or part numbers that can be cross-referenced with Honda parts catalogs.
- Measure the thread diameter with calipers or compare the existing plug with known-size bolts to confirm M14 versus other metric sizes.
- If in doubt, bring the old plug and your vehicle’s VIN to a Honda dealership or trusted shop to verify the exact specification before purchasing a replacement.
Verifying the size helps avoid cross-threading and ensures a proper seal when you perform an oil change.
Maintenance notes: torque and sealing considerations
Use the factory-specified torque for the drain plug as listed in the service manual or by your dealer. For many Honda 3.5L V6 installations, practitioners commonly apply a torque in the low-to-mid range of the typical metal oil pan plugs, especially when a crush washer is used. Always use a torque wrench and replace the crush washer to maintain proper sealing and avoid leaks.
In the absence of the exact figure for every trim level, err on the side of caution and follow the official specification for your vehicle to prevent overtightening or stripping the pan threads.
Summary
For a 2014 Honda Odyssey, the engine oil drain plug is generally M14 x 1.5 with a 17 mm drive size, and a crush washer is usually required. Verify with your vehicle’s manual or a dealer for the exact torque and any model-specific nuances, and replace the washer whenever you change the oil to maintain a reliable seal.