The engine oil pan drain plug on most 2018 Ford F-150 models uses a 14mm hex head, typically with an M14 x 1.5 thread. You’ll usually need a 14mm socket to remove or tighten it.
This article explains the drain plug sizes you may encounter on a 2018 F-150, including the engine oil pan and other service drains. Sizes can vary by engine and transmission, so verify against your exact truck’s equipment and service manual.
Engine oil pan drain plug
Common specifications for the engine oil pan drain plug on 2018 F-150s (across the 2.7L EcoBoost, 3.5L EcoBoost, and 5.0L V8 lines) are listed below. Use this as a baseline, but confirm with your model’s manual if you’re unsure.
- Head size: 14 mm (requires a 14 mm socket or wrench)
- Thread size: typically M14 x 1.5
- Torque specification: commonly around 22–29 ft-lbs (varies by engine; consult the manual)
- Washer: copper or drain plug washer often used; replace if damaged
- Notes: some trucks may use a different drain plug configuration for aluminum pans; confirm with service data
When performing an oil change, ensure you have the correct drain plug and washer and torque to the manufacturer specification. If the plug or washer shows wear, replace it to prevent leaks.
Other drains you might encounter
Beyond the engine oil pan, the 2018 F-150 may include other service drains (for example, transmission and transfer-case pans on certain configurations). The exact plug sizes vary by transmission type and options, so refer to the owner’s manual or a service guide for your build. For most DIY tasks, using the correct socket and following torque specs is essential to avoid leaks or damage.
Summary: For the oil drain plug on a 2018 Ford F-150, expect a 14mm hex head with an M14 x 1.5 thread and a torque spec in the low-to-mid range of ft-lbs. Always verify the exact engine and transmission configuration in your truck’s manual and replace washers as needed.