What size is the oil pan plug on a Dodge Ram 1500?

The drain plug is typically 14mm (M14) thread, usually M14x1.5, in most modern Ram 1500s. Exact size can vary by engine and year, so verify on your specific truck.

Ram 1500s have used several engines across generations, and while many share the 14mm drain plug, some configurations may differ. Checking the owner's manual or inspecting the existing plug is the safest way to confirm before buying or removing the plug.

Common sizes by engine and year

The following summarizes sizes you’re likely to encounter on typical Ram 1500 models. Use this as a quick reference, but always verify for your VIN.

• Most modern Ram 1500s with engines like the 3.6L Pentastar, 4.7L, or 5.7L Hemi use an M14x1.5 drain plug.


• Older Rams or nonstandard builds can occasionally use a different thread pitch (rare cases include non-M14 sizes; check manual or the old plug).


• Diesel EcoDiesel variants generally follow the same 14mm size in most markets, but verification for your specific truck is advised.

In practice, the 14mm drain plug is the standard for contemporary Ram 1500s; if in doubt, confirm via the manual or a dealer to avoid sourcing the wrong part.

How to confirm the plug size on your truck

To ensure you purchase the correct plug or tool, verify the size directly on your vehicle using these steps.

Manual check

Refer to your owner’s manual or the factory service manual for the exact oil drain plug specification for your engine and year. This is the most reliable source.

Direct measurement

If you can access the drain plug, measure the thread diameter with a caliper or thread gauge (look for about 14mm) and confirm the pitch. You can also compare with a labeled 14mm wrench or socket to verify.

Cross-check with a dealer or parts store

Provide your VIN to a Dodge dealership parts department or search the Mopar parts catalog for your exact truck to confirm the drain plug size and thread pitch for your vehicle.

Note: when removing or replacing the drain plug, use the correct torque specification for your engine and pan material to avoid leaks or stripping. The exact torque varies by model year and engine, so consult the service manual for your VIN.

Quick guidance for practical purposes

For most Ram 1500s built in the 2000s to present, you’re likely dealing with an M14x1.5 drain plug. If you’re unsure, the manual or dealership confirmation will prevent sourcing the wrong part.

Summary

The oil pan drain plug on a Dodge Ram 1500 is most commonly a 14mm/M14x1.5 thread. However, exact size can vary by engine and year, so verify with the owner's manual or service manual for your specific VIN before purchasing or replacing the plug. When in doubt, check with a dealer or view the official Mopar parts catalog for your exact truck.

What size is the drain plug on a 5.7 Hemi?

The 5.7L Hemi oil drain plug is typically an M14 x 1.5 thread size, with a 13mm or 17mm head size, requiring a socket of that measurement to remove it. Some older models may use a square-headed plug requiring a 3/8-inch or 10mm socket, so it is best to verify the head size before starting. It is crucial to replace the crush washer to ensure a proper seal.
 
This video shows how to change the oil on a 5.7L Hemi engine, including removing the drain plug: 1mBlaupartsYouTube · Nov 9, 2022
For a typical 5.7L Hemi:

• Thread size: M14 x 1.5 
• Head size: 13mm or 17mm, depending on the specific model year and part 
• Tool: Use a 13mm or 17mm socket for best results, as it's less likely to strip the plug than an open-ended wrench. 
• For older models: Some older models may have a square-headed plug that requires a 3/8-inch or 10mm socket, according to JustAnswer. 
• Washer: Always replace the crush washer to prevent leaks. 

This video demonstrates how to change the engine oil on a 5.7L Hemi engine, including removing the drain plug: 57sSerhan's GarageYouTube · Aug 7, 2023
Before you begin:

• Warm the engine to make the oil drain more easily. 
• Remove the oil filler cap to help the oil drain faster. 
• Verify the correct head size on your drain plug before starting the removal process. 

You can watch this video to learn how to change the engine oil on a 5.7L Hemi engine, including how to access and remove the drain plug: 15sIn The Garage DIYYouTube · Jan 11, 2017

What size socket for Ram 1500 oil pan?

The correct socket size for a Ram 1500 oil drain plug is most commonly a 13mm socket. This applies to most models, including those with the 3.6L V6 and 5.7L HEMI V8 engines. 
This video demonstrates how to change the oil and filter on a Ram 1500, including a view of the 13mm socket being used: 55sBlaupartsYouTube · Nov 9, 2022

• Socket size: 13mm 
• Thread size: The oil drain plug has an M14 x 1.5 thread. 
• Why a socket is recommended: Using a socket is less likely to round out the drain plug compared to an open-ended wrench. 

You can watch this video to see a demonstration of the oil change process on a Ram 1500: 58sCarParts.comYouTube · Oct 4, 2025

What size is the oil pan drain plug on a Dodge Ram 1500?

The standard oil pan drain plug size for most Dodge Ram 1500 models is M14-1.50mm thread with a 13mm or 17mm head, though it's best to verify the exact size for your specific year and engine, according to this AutoZone product page and this YouTube video. Some engines may also require a 17mm wrench, and it's recommended to replace the plug or at least its seal, especially if the original is damaged. 

• Thread Size: M14-1.50mm 
• Head Size: 13mm or 17mm, depending on the engine and year 
• Recommendation:
  • Use a socket (13mm or 17mm) to avoid rounding out the head, as recommended in this YouTube video. 
  • Verify the correct size for your specific model year and engine by checking your owner's manual or a parts website. 
  • Always check the condition of the old drain plug's seal and replace the plug or seal if it looks worn or damaged, as shown in this YouTube video. 

What size socket do I need for my oil plug?

The correct socket size for an oil plug depends on your car's make and model, as there is no single universal size. Common metric sizes include 14mm, 15mm, 17mm, and 19mm, while some older vehicles may use SAE sizes like 3/8" or 1/2". Always inspect the plug to confirm the size, as using the wrong socket can damage the bolt head. 
You can watch this video to learn how to change the oil in a Honda CR-V, including removing the drain plug: 1m1A Auto: Repair Tips & Secrets Only Mechanics KnowYouTube · Aug 13, 2018
How to find the right size

• Check your owner's manual: This is the most reliable way to find the correct size for your specific vehicle. 
• Inspect the plug: Visually examine the drain plug to determine its size. You can also measure it with a caliper if needed. 
• Try common sizes: If you can't find your manual, start with common metric sizes like 14mm, 15mm, 17mm, or 19mm. 
• Use the right socket type: A 6-point socket is recommended over a 12-point socket to prevent stripping the bolt head. 

This video demonstrates how to use a drain plug removal tool with a magnetic feature: 52sScavenger1320YouTube · Feb 23, 2024
Important tips

• Use the correct socket: A well-fitting socket is crucial to avoid rounding the bolt head. 
• Tighten properly: Do not overtighten the drain plug, as this can strip the threads. Tighten it to the manufacturer's specifications, or just snug it up if you don't have a torque wrench. 
• Replace the crush washer: It is a good practice to replace the crush washer on the drain plug to ensure a proper seal.