The Dana 44 is one of the most legendary axles in 4×4 history. Since its introduction in the 1970s, this heavy-duty solid axle has gained a near-mythical reputation for its robust and durable construction and off-road prowess.
Whether ruggedly plowing through the most challenging trails or towing a heavy load on the highway, the Dana 44 has proven itself time and again as one of the best axles out there.
However, with its popularity, increasing collectability, and demand, knowing if the used axle you’re looking at is a genuine Dana 44 can be challenging. In this post, I’ll go over the key identifiers and details on how to identify a Dana 44, even with just a visual inspection. Let’s get started!
Necessary Items
Before diving into the specific identifiers, having a few critical items on hand for your inspection is essential. These include:
- A tape measure or ruler
- A flashlight (for better visibility)
- A floor jack and stands (if inspecting an assembled vehicle)
Having these items will make your identification process much easier and more accurate.
10 Tips on How to Identify a Dana 44
Tip 1: Bolt Pattern
The most important indicator of a Dana 44 is its bolt pattern. This axle typically has a 6-bolt circular pattern on the wheel hub, with each bolt spaced equally apart. If you see this pattern, there’s a high chance it’s a Dana 44.
Tip 2: Cover Shape
The shape of the differential cover can also be a helpful identifier. Dana 44 covers are typically slightly curved or D-shaped, with a flat bottom edge. This contrasts with other axles like the Dana 35, which has a more rectangular body.
Tip 3: Cover Bolts
Another critical characteristic of a Dana 44 is the number of bolts on its differential cover. A genuine Dana 44 will have ten bolts securing the body, while other similar axles may have eight or fewer.
Tip 4: Ring Gear Size
The ring gear size is another critical factor. A Dana 44 typically has a larger diameter ring gear (around 8-3/4 inches) compared to smaller axles like the Dana 35 (around 7-5/8 inches).
Tip 5: Axle Shaft Size
When inspecting an assembled vehicle, you can also check the size of the axle shafts. The Dana 44 will have larger diameter axle shafts (around 1-3/16 inches), while other axles like the Dana 35 will have smaller diameter shafts (around 1-1/16 inches).
Tip 6: Axle Tube Diameter
The diameter of the axle tubes can also be a helpful identifier. A Dana 44 will have larger diameter tubes (around 3-1/2 inches) than smaller axles like the Dana 35 (around 2-3/4 inches).
Tip 7: Casting Numbers
A surefire way to identify a Dana 44 is by checking the casting numbers on the housing. These numbers are typically located on the front or back of the axle and can be cross-referenced with online resources to confirm if it’s a Dana 44.
Tip 8: Differential Type
The type of differential inside the axle can also indicate whether it’s a Dana 44. This axle is typically equipped with a differential locker, such as a Detroit Locker or ARB Air Locker.
Tip 9: Vehicle Make and Model
While not always reliable, knowing the make and model of the vehicle can also help confirm if it has a Dana 44. Many popular off-road vehicles like Jeep Wranglers and Ford Broncos were commonly equipped with this axle.
Tip 10: Visual Comparisons
Lastly, for those with a trained eye, simply comparing the appearance and size of an axle to known Dana 44s can be a quick way to identify it. This method may require some experience and knowledge, but it can still help make a confident identification.
The Dana 44 is truly a standout axle in the world of off-roading. Its reliable and durable design has made it a fan favorite for decades, and identifying one is helpful when shopping for parts or vehicles. By following these tips and using the necessary items, you can quickly identify a Dana 44.
8 Additional Tips for Maintaining and Upgrading Your Dana 44
Now that you know how to identify a Dana 44, let’s discuss some tips for keeping it in top shape and upgrading its performance.
Tip 1: Regular Maintenance
Like any mechanical component, proper maintenance is crucial in ensuring the longevity of your Dana 44. This includes checking and changing the differential fluid, inspecting the axle seals and bearings, and maintaining proper tire pressure.
Tip 2: Upgrade to Chromoly Axle Shafts
For those who push their Dana 44 to its limits, upgrading to chromoly axle shafts is an intelligent move. These more robust and durable rods can handle heavier loads and harsher off-road conditions without breaking or bending.
Tip 3: Consider a Gear Ratio Change
Consider changing the gear ratio if you want to improve your Dana 44’s performance. This will allow for better acceleration and towing capabilities and potentially enhance fuel efficiency.
Tip 4: Add a Differential Locker
As mentioned earlier, many Dana 44s come equipped with a differential locker. However, if you don’t have one, adding a locker can significantly improve off-road capabilities by providing better traction and control in tricky terrain.
Tip 5: Install Upgraded Axle Bearings and Seals
To prevent leaks and maintain proper lubrication, upgrading to high-quality axle bearings and seals is essential. These aftermarket options often provide better durability and performance compared to stock parts.
Tip 6: Inspect and Replace Worn Ball Joints
The ball joints in your Dana 44 are crucial in allowing for smooth steering and suspension movement. Regularly inspecting and replacing worn or damaged ball joints can prevent potential accidents and costly repairs.
Tip 7: Check for Axle Tube Damage
Off-roading can take a toll on your axle, and damage to the axle tubes can compromise its strength and performance. Regularly inspect for any cracks or bends in the axle tubes and address them promptly.
Tip 8: Consult with Experts
If you’re unsure about a particular upgrade or maintenance procedure for your Dana 44, don’t hesitate to consult with experts. They can provide valuable insights and guidance to ensure your Dana 44 is in top condition.
The Dana 44 axle is a reliable and durable component commonly found in off-road vehicles. Using the tips in this guide, you can confidently identify a Dana 44 and make necessary maintenance or upgrades to keep it performing at its best. Always prioritize safety when working on your vehicle and consult with professionals when needed.
Frequently Asked Questions
Are There Any Other Ways to Identify a Dana 44 Axle?
You can also look for the “Dana” logo stamped on the differential cover or measure the ring gear diameter. A Dana 44 will have a ring gear diameter of around 8-3/4 inches.
Can I Use Aftermarket Parts on My Dana 44?
Yes, many aftermarket options are available for upgrading and maintaining your Dana 44. Just do proper research and consult with experts before making any modifications.
How Often Should I Inspect and Maintain My Dana 44?
Inspecting and maintaining your Dana 44 at least once a year or more frequently if you frequently use your vehicle for off-roading or towing is recommended. Regular maintenance can prevent potential issues and save you money in the long run.
Is It Possible to Replace a Dana 44 with a Different Axle?
Yes, it is possible, but it may require significant modifications and additional costs. It’s best to consult experts before replacing your Dana 44 with a different axle. There are also resources available online that can guide you in the process. Ultimately, it will depend on your vehicle and its compatibility with other axles.
Can I Install a Limited Slip Differential in My Dana 44?
Yes, a limited-slip differential is a popular upgrade for Dana 44 axles. It provides better traction and handling in various off-road conditions. Just make sure to choose the right type of limited slip differential for your specific vehicle and driving habits.
Conclusion
In conclusion, identifying a Dana 44 axle is crucial for any vehicle owner, especially those frequently engaging in off-roading or heavy-duty hauling. As we have discussed, several key factors are to consider when determining if your vehicle has a Dana 44 – from counting the bolts on the differential cover to measuring the distance between the wheel studs.
It is also essential to remember that while Dana 44 axles are known for their durability and strength, they still require proper maintenance and care to ensure longevity and optimal performance.
So, if you’re unsure whether your vehicle has a Dana 44 or need any other assistance with your axle, feel free to consult a trusted mechanic or refer to this blog post for guidance.
We hope this comprehensive guide has provided you with all the necessary information and tools to confidently identify a Dana 44 axle on your own. Keep exploring and pushing the limits of your vehicle with the knowledge of how to identify a Dana 44 so that you can now easily differentiate between different types of axles.