What size is the axle nut on a 2013 Dodge Ram?
The most common outer CV axle nut size for the front hubs on a 2013 Ram is 34 mm in diameter.
Variations exist across different Ram models and drivetrains (Ram 1500, 2500, 3500; 4x4 vs 2WD). To be certain, consult the factory service manual for your exact configuration or measure the nut directly before attempting removal.
Overview of axle-nut sizing on the 2013 Ram lineup
In 2013, Ram offered several configurations, including the Ram 1500 (with 4x4 options) and the heavier-duty Ram 2500/3500. Front axle assemblies differ between light-duty and heavy-duty models, and some 4x4 hubs use a 34 mm outer nut while others may use different sizes. The rear axle uses a different configuration entirely. For a precise size, refer to the service diagrams for your exact model and drivetrain.
Before listing, note that sizes can vary by axle type and by production variations; the following notes reflect common cases you may encounter.
- Front outer CV axle nut (most 4x4 Ram 1500s and many 2500/3500 front hubs): commonly 34 mm in diameter.
Always verify on your specific vehicle, as factory specs can vary by axle type, year, and whether the truck uses a separate hub or CV-joint assembly.
In practice, 34 mm is the standard you are most likely to need. If your truck uses a nonstandard front-hub design, the nut may be 32 mm or 36 mm, and you’ll need to confirm with the manual or by measuring the nut across the flats with a caliper or a socket set.
How to confirm the exact size on your truck
Use these steps to identify the correct nut size before removal or replacement.
- Park the truck on a level surface, engage the parking brake, and chock the wheels.
- Remove the wheel to access the front hub and the outer CV axle nut.
- Fit a socket onto the nut to determine the correct size. The socket should sit evenly on the flats with no wobble. If a 34 mm socket fits snugly, that’s the size you need; if not, try nearby sizes (commonly 32 or 36 mm) to confirm.
- Consult the vehicle’s service manual or parts diagram for your exact model (Ram 1500 vs 2500/3500; 4x4 vs 2WD) for the official spec and torque value.
- Replace the nut with the correct torque specification and recheck alignment; use a cotter pin or locking mechanism if specified by the factory.
Notes: Always torque to the specification given by the manufacturer and use the appropriate locking method if required by the design. Do not reuse damaged nuts or threads.
Summary
For a 2013 Dodge Ram, the most common front outer CV axle nut size is 34 mm. However, axle nut sizes can vary by model and drivetrain, so verify against the official service manual or measure the nut on your vehicle. Proper torque and installation are essential to ensure safe operation of the front axle.
