What size is the oil drain plug on a 2016 Subaru?
The typical oil drain plug size for most 2016 Subarus is M20 x 1.5 with a 14‑mm hex head. However, exact specifications can vary by engine and model, so it’s best to confirm for your specific vehicle.
Subaru’s 2016 lineup includes several models (Impreza, Forester, Outback, Legacy, Crosstrek, and WRX), and while the M20 x 1.5 drain plug with a 14 mm socket head is common, some variants may differ. This article provides a practical guide to the usual size, how to verify it, and what to watch for during maintenance.
Common drain plug size for 2016 Subarus
Before you replace the plug or the washer, review these typical specs to ensure you’re using the correct part and tool for your engine.
- Thread size: M20 x 1.5
- Socket size for removal/installation: 14 mm
- Washer: replace with the OEM drain plug crush washer at every oil change
- Notes: Some engine variants or production specifics may differ; always cross-check with your owner’s manual or service manual for your exact engine code (e.g., FA20, FB25, EJ25).
In practice, these are the most commonly encountered specifications across the 2016 Subaru family. If your engine or model differs, a quick check of the factory manual or an inspection of the current drain plug can help you confirm the correct size.
Engine/Model considerations
Notes by model and engine family (general guidance)
For the 2016 lineup, the vast majority of engines—such as the 2.0L and 2.5L variants found in Impreza, Forester, Crosstrek, and Outback—use the M20 x 1.5 drain plug with a 14 mm hex head. The WRX and other turbocharged variants typically share this plug size as well, though torque specs and washer details may differ slightly by engine code. Always verify for your exact engine (for example, FA20D, FB25, EJ25) in the owner’s manual or service manual.
During an oil change, replace the crush washer and tighten the drain plug to Subaru’s specified torque for your engine. Using the wrong size or over-tightening can damage threads or cause leaks.
Summary
For most 2016 Subarus, the oil drain plug is M20 x 1.5 with a 14‑mm head. This size covers the common engines in Impreza, Forester, Outback, Legacy, Crosstrek, and WRX, but engine-specific variations can occur. Always verify against your exact model and engine code, replace the crush washer, and torque to the manufacturer’s specification.
What size is the drain plug on a 2.3 Ecoboost?
M12 X 1.75
Engine Oil Drain Plug Pan - M12 X 1.75.
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 a Subaru Outback drain plug?
16X17
Subaru Outback Engine Oil Pan Drain Plug. Plug 16X17.
What size socket for Subaru oil drain plug?
The common socket sizes for a Subaru oil drain plug are 17mm or 14mm, depending on the model year and engine type. Some older or specific models might also use a 13mm socket, but it's less common for the oil drain plug. It's best to confirm the exact size for your vehicle before starting.
- 17mm: Commonly used on many older or specific models, such as the 2.5L engines on some Outbacks and Foresters.
- 14mm: Frequently used on newer models, including some Crosstreks and newer 2.5L Outbacks.
- 13mm: This size is less common for the oil drain plug but is sometimes cited for various Subaru models, and is more often used for differential drain plugs.
- Other sizes: Some models may have other sizes or use a non-hex head, so it's crucial to check the correct size for your specific car before performing an oil change.
