What size is the oil drain plug on a 2005 Honda Civic?
The typical oil drain plug size for a 2005 Honda Civic is a 14 mm hex-head bolt with M14 x 1.5 threads.
Exact size can vary by the specific engine variant and market. The 2005 Civic offered several trims and engines in different regions (primarily the D-series 1.7L in many markets, with other variants available in others). This article explains the standard size you’re most likely to encounter, how to verify your exact specification, and what to consider when replacing the plug or its washer.
Common plug characteristics you’ll encounter
Before listing the typical dimensions, here are the key characteristics to look for when identifying or buying a replacement drain plug.
- Head size: 14 mm hex (requires a 14 mm socket or wrench).
- Thread size: M14 x 1.5 (diameter 14 mm with a 1.5 mm thread pitch).
The above characteristics cover the vast majority of 2005 Civics across markets. If you have an unusual variant or the plug appears different, check the service manual for your exact engine code to confirm.
How to confirm the exact size for your car
To ensure you have the correct specification for your specific vehicle, follow these steps to verify your engine code and the appropriate drain plug size.
- Identify your engine code from the vehicle’s information label, service manual, or under-hood stamping (common codes include D-series for many 2005 Civics).
- Consult the official Honda service manual or parts catalog for the exact drain plug dimensions for that engine code.
- If replacing, use a new washer/gasket and torque the plug to the manufacturer’s specification (typically in the low tens of N·m to around 30–40 N·m range, depending on the engine; refer to the manual).
Concluding: for most 2005 Civics, expect a 14 mm head and M14 x 1.5 thread. Always verify against your engine code in the service manual or with a Honda dealer if you’re unsure.
Notes on variations
There are a few market-specific or rare variant differences that could affect drain plug size. If your car is not a typical North American D-series example, confirm with the exact engine code and official documentation or a trusted parts source.
Summary
In summary, the oil drain plug on a 2005 Honda Civic is most commonly a 14 mm hex-head bolt with M14 x 1.5 threading. This size covers the majority of 2005 Civic engines, including common D-series variants. For absolute certainty, check your engine code in the vehicle manual or Honda’s official service literature and use the correct torque specification when installation.
What size socket for Honda Civic oil plug?
All plugs have 14mm hex – just one wrench works for all.
What size socket is a Honda oil filter?
This Filter Wrench Is 14 Flute 65MM (Approx 2 1/2").
What size is a Honda oil drain plug?
The most common Honda oil drain plug size is M14 x 1.5 thread, which typically uses a 17mm hex head, but this can vary by model and year. It is best to confirm the specific size for your vehicle, as some models may use a different size like the M20x1.5 found on some older Accords, or a 14mm washer drain plug.
Common sizes
- M14 x 1.5: This is the most frequently cited size for many modern Honda models, including the Civic and Fit.
- 17mm hex head: This is the most common tool size for the M14 x 1.5 plug, notes this Amazon.com listing.
- M20 x 1.5: Some older Honda models, like certain Accords, may use this larger size.
How to be sure
- Check your owner's manual: This is the most reliable source for your specific vehicle's specifications.
- Measure the old plug: If you have the old plug, you can measure the diameter of the threads and the distance between them to get the thread size (M14 x 1.5) and confirm the head size (17mm) with a socket.
- Look up parts online: Use your car's year, make, and model on an auto parts website to see what drain plug options are compatible. Websites like Advance Auto Parts and AutoZone can help you find the correct size.
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What size socket takes off an oil drain plug?
The most common sizes for oil drain plugs are 15mm and 17mm metric or 9/16" imperial, but sizes can range from 13mm to 19mm depending on the vehicle. It is best to check your car's owner's manual or measure the bolt head to ensure you have the correct size before starting, as using the wrong size can strip the plug.
This video demonstrates how to remove an oil drain plug: 1m1A Auto: Repair Tips & Secrets Only Mechanics KnowYouTube · Aug 13, 2018
- Common metric sizes: 15mm, 17mm, and 14mm are frequently used, but other sizes like 13mm, 16mm, and 19mm can also be found.
- Common imperial sizes: 9/16" is a common imperial size, but others can be found.
- How to find the right size:
- Check your owner's manual: The manual should specify the correct size.
- Measure the bolt head: Use a wrench or socket to find the size that fits snugly.
- Use the correct socket type: A 6-point socket is recommended for a secure fit and to prevent stripping the bolt head, especially if it's stuck.
This video shows how to handle an oil drain plug: 56sGearHeads with FinallyHeSleepsYouTube · Dec 16, 2022
