What size is the oil pan bolt on a 2019 Dodge Ram?

There isn’t a single universal size for the 2019 Ram oil pan bolts. In Ram trucks from that year, bolt size depends on the engine: the 3.6L Pentastar typically uses M6 x 1.0 bolts, while the larger 5.7L Hemi uses M8 x 1.25 bolts. Always verify with your exact engine and model using the service manual or parts diagrams.

Engine options and typical bolt sizes

The 2019 Ram lineup includes several engines. The bolt sizes below are the most commonly reported for these engines, but variations can occur by trim and manufacturing batch.

3.6L Pentastar V6

In the 2019 Ram with the 3.6L Pentastar V6, the oil pan bolts are commonly M6 x 1.0, with bolt lengths varying by pan thickness.

• Oil pan bolts: M6 x 1.0 (metric, 6 mm diameter; 1.0 mm pitch).


• Typical lengths: vary by oil pan; generally around 10–15 mm, but measure to confirm.

To be certain, refer to the factory service manual for your truck’s exact fastener specification.

5.7L Hemi V8

For the 5.7L Hemi V8 option, oil pan bolts are commonly M8 x 1.25, again with variable lengths depending on the oil pan design.

• Oil pan bolts: M8 x 1.25.


• Typical lengths: vary; check the service manual or existing bolts for exact measurement.

Always verify with the specific vehicle’s documentation or parts diagram before purchasing replacements.

3.0L EcoDiesel V6

The EcoDiesel option in some 2019 Ram trims uses a similar approach to fastener sizing as the Pentastar, but exact bolt size can differ. The majority of resources point to M6 x 1.0 as a common size for smaller engines, but confirmation is essential.

• Oil pan bolts: commonly M6 x 1.0 (verify).


• Check the service manual for the exact bolt length and torque specification.

Due to variations across engines and production runs, always confirm with official documentation.

How to confirm the exact bolt size on your truck

To be certain of your 2019 Ram’s oil pan bolt size, use these steps.

• Consult the factory service manual or official Ram/Mopar parts diagrams for your exact engine and model configuration.


• Inspect the existing bolts: measure diameter with calipers and count thread pitch with a pitch gauge. If in doubt, compare to common sizes (M6 and M8) and test fitment carefully.


• If replacing, consider purchasing a small fastener kit that includes M6 x 1.0 and M8 x 1.25 bolts in metric lengths appropriate for oil pans, plus compatible washers and seals.

Note: When reassembling, use the manufacturer’s torque specifications and ensure the oil pan gasket is properly seated to prevent leaks. If you’re unsure, have a professional mechanic verify the fasteners and torque.

Summary

The oil pan bolt size on a 2019 Dodge Ram is not universal; it depends on the engine. The 3.6L Pentastar commonly uses M6 x 1.0 bolts, while the 5.7L Hemi typically uses M8 x 1.25 bolts. The 3.0L EcoDiesel may align with either size depending on the application. To avoid errors, verify the exact bolt size through the vehicle’s factory service manual, parts diagrams, or a qualified technician, and use the correct torque when reinstalling.

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 drain plug on a 5.7 Hemi oil pan?

M14x1. 5, threads about an inch long.

What size is the oil pan bolt on a 2019 Ram 1500?

The 2019 Ram 1500 oil pan drain plug is an M14-1.50 thread size. The head size can vary, with some models using a 13mm socket and others using a 16mm or 28mm socket. For an oil pan bolt (not the drain plug), the 2019 Ram 1500 uses 10mm bolts for the oil pan itself. 
Oil pan drain plug

• Thread size: M14-1.50 
• Head size: Varies by model; check for a 13mm, 16mm, or 28mm socket. A 13mm socket is very common for 5.7L Hemi engines. 

Oil pan bolts (for the oil pan itself)

• Size: 10mm 

Important considerations

• The oil pan bolt and the oil pan bolts are different. The drain plug is for draining the oil, while the oil pan bolts hold the entire pan to the engine block. 
• It is recommended to confirm the head size of your specific drain plug before purchase, as it can vary between models. 
• When re-installing the oil pan bolts, use the correct torque specifications. 

What size socket for an oil pan bolt?

What size wrench to use for an oil drain plug depends on the size of the oil drain plug itself, which is a long bolt head. There is no universal oil plug size, but they do come in just a few several standard sizes, such as ¼ inch (. 6 centimeters), 3/8 inch (. 9 centimeters), ½ inch (1.3 centimeters), etc.