What size wrench is the oil drain plug on a 2014 Subaru Forester?
The oil drain plug on a 2014 Subaru Forester uses a 14 mm hex head—so a 14 mm wrench or socket fits for removal and installation.
Tool size and removal
Understanding the correct tool size helps you complete an oil change without damaging the plug or pan. For most 2014 Forester models, the drain plug is a 14 mm hex head. Use a 14 mm socket or open-end wrench for best grip and to avoid rounding the head.
- 14 mm hex head is standard for the Forester oil drain plug
- Use a 14 mm socket or a 14 mm wrench with a 6-point drive for solid engagement
- Replace the copper washer on reinstall to seal properly
After using the tool to loosen and remove the plug, let the oil drain entirely before reinstalling with the washer and the correct torque.
Torque and maintenance notes
When reinstalling, tighten to a typical range of about 23–29 Nm (roughly 17–21 ft-lb). This range is commonly used on Subaru 2.5L engines in this era; avoid overtightening to protect the aluminum oil pan. Check for leaks after refilling with fresh oil.
Additional considerations
While the 14 mm size covers most 2014 Forester configurations, if your engine differs (e.g., unusual trim or a specialty model), consult the owner's manual or a factory service manual for your exact engine code to confirm the torque specification and washer type.
Summary
In short, expect a 14 mm hex head for the oil drain plug on the 2014 Subaru Forester. Use a 14 mm wrench or socket, replace the copper washer, and torque the plug to about 17–21 ft-lb (23–29 Nm). Always verify against your specific model year and engine in the owner's manual.
