Oil Drain Plug Sizes Sorted by Make, Model, Engine

Car and Truck Oil Drain Plug Sizes: If you have ever crawled under your car ready for an oil change only to realize you have no clue what size your drain plug is, you are absolutely not alone. Drain bolt sizes vary from one vehicle to another, and sometimes even between different engines within the same model year. The good news is that manufacturers tend to reuse plug sizes, so once you know where your vehicle fits, the mystery fades fast.

This guide covers the most common oil drain plug sizes across popular makes and models. This page also supports a searchable tool that lets you type in your vehicle and instantly find the correct drain plug size.

Oil Drain Plug Size Lookup Tool

Here is an Oil Drain Plug Size Search Tool I created that can be used to lookup the most common drain plug sizes from my local database. To use it, simply select your vehicle make, model, and engine from each drop list to instantly find the correct plug size.

Oil Drain Plug Sizes by Make and Model

Below are some of the most common Oil Drain Plug sizes referenced by Make, Model, and Engine.

Oil Drain Plug Sizes FAQ

Why Drain Plug Sizes Matter

Using the wrong size socket can round off the bolt, crack the washer, or cause leaks. Matching the correct bolt size helps prevent damage and ensures a clean, leak free oil change.

Most Common Oil Drain Plug Sizes

• 13 mm
• 14 mm
• 15 mm
• 17 mm
• 19 mm
• 21 mm
• 3/8 square drive (some older American trucks)
• Torx style plugs on some European vehicles

Notes on Washers, Torque, and Materials

• Many Japanese vehicles use crush washers.
• European vehicles sometimes use aluminum plugs or torx designs.
• Typical torque range: 20 to 35 ft lbs, but always check your specific spec.
• Reusing old washers can cause drips.