The oil drain plug washer for a 2006 Honda Accord is typically a copper crush washer designed to seal a standard drain plug, most commonly fitting a 12 mm (M12) thread. In practice, the outer diameter of the washer is generally around 17–18 mm, and it should be replaced with a new washer at every oil change to ensure a proper seal.
Engine options and standard hardware
Understanding which engine your Accord has helps identify the typical drain plug hardware. The 2006 Accord offered a 2.4 L four-cylinder and a 3.0 L V6 option. Both use a copper crush washer for the oil drain plug, with the drain plug designed for a relatively common metric size. Use a new OEM washer each time you drain the oil to maintain a reliable seal.
- 2.4 L four‑cylinder engine: The drain plug typically uses a standard M12 x 1.25 thread with a copper crush washer. Replace the washer with a new one during each oil change.
- 3.0 L V6 engine: The drain plug and copper washer are generally the same family of size as the 2.4 L engine, with the washer sized to seal against the pan without leaks. As with the 4‑cylinder, a new washer is recommended every oil change.
In both cases, the key point is that the washer is a single‑use copper crush washer sized for the drain plug’s thread. Replacing it at every oil change helps prevent oil leaks.
How to verify the exact size for your car
Because there can be minor variations by production batch or engine code, it’s best to confirm the exact washer size for your specific vehicle. Use these steps to verify:
- Check the owner's or service manual for the drain plug specification and washer replacement guidance.
- Use your VIN or engine code to look up the OEM drain plug washer size in an official parts catalog or at an authorized Honda dealer.
- Inspect the current washer: measure the inner hole (should match the drain plug thread diameter, typically around ~12 mm for common Honda plugs) and estimate the outer diameter (roughly 17–18 mm for a standard copper washer).
If you’re unsure, asking a dealer or parts retailer with your VIN will ensure you get the exact OEM washer size for your 2006 Accord’s engine variant.
Replacing the washer during oil changes
When performing an oil change, it’s best practice to replace the washer to maintain a proper seal and prevent leaks. Follow these steps:
- Drain the old oil and remove the drain plug.
- Inspect and discard the old copper washer; do not reuse it if it appears deformed or damaged.
- Install a new copper washer on the drain plug or as supplied by the replacement kit.
- Reinstall the drain plug and torque to the specification in your owner's manual (typically in the range of 27–34 Nm, or about 20–25 ft-lbs, depending on exact engine and model).
- Refill with the correct oil type and volume, then check for leaks after a short run.
Using a new washer and torquing to spec are the best guarantees against leaks at the drain plug.
Additional maintenance tips
To maximize reliability, pair washer replacement with a complete oil change and keep an eye on the drain plug area for future leaks. If you ever notice residual oil around the plug after tightening, recheck torque and washer seating or replace the washer again.
Summary: For the 2006 Honda Accord, the oil drain plug uses a copper crush washer designed for a standard M12 x 1.25 drain plug, with an outer diameter typically around 17–18 mm. Always replace the washer at oil changes and torque the plug to the manual’s specification. If you need the exact OEM washer size for your specific engine variant, consult the official Honda parts catalog or a dealer using your VIN.
What size is the oil drain plug on a Honda Accord?
17 mm
Dorman – Standard Engine Oil Drain Plug: M14-1.50 Thread, 17 mm Head, 1 Clamshell/Card (Part No. 090-033CD)
What washer do I need for my oil drain plug?
So every time you do an oil change you're going to want to replace. This drain bolt washer. So the idea of a drain bolt washer is to seal the surface here between the bolt and the oil pan.
What size is the drain plug on a 2006 Honda Accord?
M14 x 1.50 universal style oil drain plug replacement.
What size socket for Honda drain plug?
What size socket do I need for my car's oil drain plug? Most cars use oil drain plugs between 13mm and 17mm, depending on the brand. For example, Toyota and Honda typically use 14mm or 17mm, while Ford often uses 13mm or 15mm.