The oil drain plug in most Hyundai Elantra engines uses a 14 mm hex head and an M14 x 1.5 thread. There can be variations by model year and market, so it’s best to confirm for your specific vehicle.
This article outlines the typical size and how to verify the exact specification for your Elantra, along with practical steps for checking and confirming the correct plug size.
Typical size and how it’s used
For the common Hyundai Elantra configurations (including several 1.8L and 2.0L gasoline engines), the drain plug is usually a 14 mm hex head. The thread is commonly M14 x 1.5, and a crush washer is often used when reinstalling. Torque specifications vary by engine and year, so consult the owner’s manual or service manual for the precise value.
Versions and variations
Hyundai has produced multiple Elantra generations with different engines across various markets. In most cases the drain plug remains 14 mm with M14 x 1.5 threading, but there are exceptions depending on the exact model year, engine variant, or regional specifications. If you’re unsure, verify against your vehicle’s VIN and the official Hyundai service documentation or contact a dealer.
How to verify for your car
To confirm the exact size for your Elantra:
- Check your owner’s manual or service manual for the drain plug size and torque specification.
- Inspect the drain plug head on your vehicle to determine the hex size; many Hyundai engines require a 14 mm socket or wrench.
- If you are replacing the drain plug, ensure you use the correct washer and compatible material for your engine to prevent leaks.
- If the 14 mm socket does not fit, do not force it; recheck the manual or consult a Hyundai service center for the precise specification.
Following these steps will help you confirm the correct drain plug size for your Elantra and avoid cross-threading or leaks during oil changes.
Summary
In most Hyundai Elantra models, the oil drain plug uses a 14 mm hex head with an M14 x 1.5 thread. Always verify with your specific model year and engine via the owner’s manual, service manual, or a Hyundai dealer to account for any variations.
What size socket do I need to remove a drain plug?
What size wrench do I need for my oil drain plug? The most common sizes are 14 mm, 15 mm, and 17 mm hex. Some vehicles use a 3/8-inch square drive or an internal Allen key (8 mm or larger). Check your owner's manual or measure the plug directly.
What size is the oil drain plug on a Hyundai?
17 mm
Dorman – Standard Engine Oil Drain Plug: M14-1.50 Thread, 17 mm Head, 1 Bag (Part No. 090-033.1)
What size spark plug socket do I need for a Hyundai Elantra?
Use the 5/8 socket with an 8-inch extension attached to a wrench to tighten the spark plug, without breaking the spark plug.
What size socket for Hyundai Elantra oil drain plug?
You'll need a 27mm socket to remove it. With the engine warm, the car raised, and your gear ready, you're set to start draining the oil.