What size socket fits the oil drain plug on a Ram 1500?

For most Ram 1500 models, a 13 mm, 6‑point socket fits the oil drain plug. That covers the majority of late-model gas trucks (3.6L Pentastar and 5.7L HEMI) and the 3.0L EcoDiesel. However, older generations and some engines may use a 14 mm or 9/16-inch head. Always verify by year/engine or measure the plug head before loosening to avoid rounding it off.

Typical sizes by year and engine

The Ram 1500 has spanned several generations and powertrains, and while the drain plug thread is commonly M14x1.5, the hex head you put a socket on can vary slightly. Here’s what owners and service literature most often report.

• 2013–2024 5.7L HEMI V8: 13 mm hex head (M14x1.5 plug), typical torque ~25 ft‑lb (34 N·m).
• 2013–2024 3.6L Pentastar V6: 13 mm hex head (M14x1.5 plug), typical torque ~25 ft‑lb (34 N·m).
• 2014–2024 3.0L EcoDiesel V6: 13 mm hex head (M14x1.5 plug), typical torque ~30–32 ft‑lb (41–43 N·m); usually uses a crush washer.
• 2009–2012 (4th gen) various engines: Most use 13 mm, but some 4.7L V8 trucks may have a 14 mm or 9/16-inch head; verify before loosening.
• 2002–2008 (3rd gen) various engines: Commonly 9/16-inch or 14 mm hex heads appear; confirm on the vehicle.
• 2025 Ram 1500 (new Hurricane inline‑6 models): Check the owner’s manual or service info for your VIN; recent Stellantis gas engines frequently use a 13 mm head on an M14x1.5 plug, but confirm as specs finalize.

In practice, a 13 mm socket will fit most late-model Ram 1500 oil drain plugs, but carrying a 14 mm and a 9/16-inch as backups covers the common outliers and older trucks.

How to confirm the size on your truck quickly

If you’re unsure which socket your Ram 1500 needs, these quick checks help you avoid rounding the plug or over-torquing it.

1. Check documentation: Look up the owner’s manual, a Mopar service manual, or a VIN-specific parts diagram (plug is typically listed as M14x1.5).
2. Measure the hex: A digital caliper across flats will read about 13.0 mm (~0.51 in) for a 13 mm head, ~14.0 mm (~0.55 in) for 14 mm, and ~0.56 in for 9/16-inch.
3. Test-fit carefully: Start with a 13 mm 6‑point socket. If it’s loose, try 14 mm; if that’s sloppy, try 9/16-inch. Avoid 12‑point sockets on stubborn plugs.
4. Note the sealing style: Many gas engines use a plug with an integrated rubber gasket; EcoDiesel usually uses a replaceable crush washer—have a new one ready.

These steps take a minute and help ensure you use the correct tool and replacement parts, preventing damage or leaks.

Torque and consumables to remember

Using the correct torque and sealing parts is as important as using the right socket. Here’s what most Ram 1500 applications require.

• Typical drain plug torque: Gas engines ~25 ft‑lb (34 N·m); EcoDiesel ~30–32 ft‑lb (41–43 N·m). Always default to the spec in your manual.
• Sealing:
  – Gas (Pentastar/HEMI): Often an integrated gasket on the plug; replace the plug or gasket if damaged.
  – EcoDiesel: Replace the crush washer at each oil change to ensure proper sealing.
• Aftermarket plugs/valves: If your truck has a quick-drain valve (e.g., Fumoto) or non‑OEM plug, the required socket size may differ—check that brand’s instructions.

Correct torque and a fresh sealing surface help prevent stripped pans and drips, especially on aluminum sumps.

Quick takeaway: which socket to grab

If you’re heading under the truck right now, this is the practical kit to bring.

• Primary: 13 mm 6‑point socket (3/8-inch drive is fine).
• Backups: 14 mm and 9/16-inch sockets for older or non‑standard plugs.
• Tools: Torque wrench capable of 25–35 ft‑lb and a new crush washer if you have an EcoDiesel.

With those on hand, you’ll be equipped for nearly all Ram 1500 drain plugs across recent generations.

Summary

Most Ram 1500 oil drain plugs take a 13 mm, 6‑point socket—especially 2013–2024 gas models and the 2014–2024 EcoDiesel. Older trucks may use a 14 mm or 9/16-inch head. Verify by year/engine or measure the plug, use the proper torque (about 25 ft‑lb for gas, 30–32 ft‑lb for EcoDiesel), and replace the crush washer where required to ensure a leak-free service.

What size is the oil drain bolt on a 2015 Dodge Ram 1500?

The oil drain plug for a 2015 Ram 1500 is typically an M14-1.50 thread size with a 13mm head for the 3.6L V6 and 3.0L EcoDiesel engines, while the 5.7L V8 Hemi uses an M16-1.50 thread size with a 17mm head. For the 3.6L and 3.0L engines, you will need an M14-1.50 plug and a 13mm wrench, and for the 5.7L Hemi, you will need an M16-1.50 plug and a 17mm wrench. 
For 3.6L V6 and 3.0L EcoDiesel Engines: 

• Thread Size: M14-1.50
• Head Size: 13mm
• Required Tool: 13mm wrench

For 5.7L V8 Hemi Engine: 

• Thread Size: M16-1.50
• Head Size: 17mm
• Required Tool: 17mm wrench

What size socket for Ram 1500 oil change?

Using a 13-millimeter socket and torque wrench, tighten the drain plug. In our case, we are tightening it to a 25 ft-lb torque specification. Using a rag, clean any excess oil from around the drain plug area.

What size is a Dodge Ram 1500 oil drain plug?

The Dodge Ram 1500 oil drain plug typically has an M14-1.50 thread size for most model years, though the specific tool size (like a 13mm or 17mm wrench) for the plug head can vary by model year and design. It’s best to confirm the specific thread size and required tool for your exact truck model year before purchasing a new plug or replacement parts.
 
Common Specifications

• Thread Size: M14-1.50 is the common thread size for most Dodge Ram 1500s. 
• Head Size: This can vary. Common head sizes include 13mm or 17mm, depending on the vehicle’s specific model and original equipment. 

Important Considerations

• Vehicle Year: While M14-1.50 is a common size, it’s crucial to verify the exact specifications for your specific Ram 1500 model year, as plug sizes can differ. 
• Original Equipment: It’s recommended to use an oil drain plug that is the same style and size as the one that originally came with your truck to ensure a secure seal. 
• Check Your Truck: For the most accurate information, check the specifications of your truck or consult a parts store with your vehicle’s details. 

What size wrench do I need to remove the oil drain plug?

You will need to check the specific make, model, and year of your vehicle because there is no universal oil drain plug wrench size. The size is typically a common metric size, like 14mm, 15mm, 17mm, or 19mm, or an equivalent fractional (SAE) size. It is best to get a socket set with a range of metric and SAE sizes to ensure you have the correct fit for your car’s drain plug.
 
This video demonstrates how to use a special tool to remove a rounded drain plug: 56sJimthecarguyYouTube · Nov 17, 2014
To find the correct size:

1. Consult your owner’s manual: to see if it specifies the drain plug size. 
2. Inspect the bolt head: to determine if it is metric (MM) or standard (SAE). 
3. Use a socket wrench: with the appropriate size to fit the bolt. 
4. If you don’t have a socket wrench, you can try an adjustable wrench, but be careful, as this can strip the bolt. 
5. Consider getting a 6-point socket: or wrench, as they provide better grip and reduce the risk of rounding the bolt head, especially if it’s old or already damaged.