What Axles Are In My Jeep Jk

What Axles Are In My Jeep Jk – The Jeep Wrangler is a popularly customizable vehicle and can come from the factory with many different axle combinations, largely depending on the vehicle’s trim level. Also, because of this customization, most people don’t even have the same axles that came from the factory. So for those who have owned their Jeeps for a long time or just bought a used Wrangler, figuring out which axles the vehicle has isn’t as easy as looking at the spec sheet.

From the first edition Wrangler YJ in 1987, to the new JL, Jeep has introduced three main types of solid axles produced by Dana Holding Corporation: Dana 30, 35 and 44. And there’s a good chance your Wrangler has one. Some combination of all three.

What Axles Are In My Jeep Jk

What Axles Are In My Jeep Jk

The Dana 30 is the most common front axle found on most Jeep Wranglers, and is easily recognized by its rounded top and bottom along with the flat-sided differential cover. This axle is also only placed on the front of Jeep Wrangler vehicles, so don’t waste your time checking the rear to identify that version since it’s not a Dana 30.

Extreme 60 Perfromance Axle Set

Instead, the Dana 35 was only found as a rear axle for the Jeep Wrangler. This version of the axle is distinguished by its oval-shaped differential cover that is wider than it is tall.

Finally, the Dana 44 axle can be found on the front or rear. And the differential cover on this doesn’t shift from front to back; Composed of flat sides and angular top and bottom. The Dana 44 usually comes on the Rubicon Wrangler trim level from the factory, but many choose this axle as a strong upgrade when switching to larger wheels and tires.

Additionally, Dana also makes a 60 series axle, which is used by some in the Jeep community for off-road performance due to its strength and ability to handle the pressure of larger tires and wheels (think 38-40″ or larger). This is usually a huge selling feature and with this axle Those who buy a used Jeep usually know what they are getting into. But if this is the case, these Dana 60 axles should have the model number stamped somewhere on the lower right side of the center section. A large center section to accommodate large gears, not to mention that you will have very large tires on the vehicle.

If you’ve tried identifying your axles by vehicle make or year and still aren’t sure, another way is to pull the axle bill of material number on the long tube of the axle shaft. This number consists of six digits plus one or two digits at the end of the tube. With that number, you can check the Dana website to determine which axle you might have.

Rubicon Jk Dana 44 Axles

As for stock breakdowns, original owners of a Jeep YJ (build years 1987-95) would have a Dana 30 in the front and a Dana 35 in the rear, as Jeep had the same factory combination for those years.

After the introduction of the Wrangler TJ (1998-2006), original owners still had a Dana 30 in the front and most likely a Dana 35 in the rear as well. But the Jeep has a Dana 44 rear axle option for those driving a manual transmission. In 2003, Jeep introduced the Rubicon trim level for the TJ Wrangler and featured Dana 44 front and rear axles.Finally, original LJ Unlimited owners (2003-06) had Dana 30 front and Dana 44 rear.

Up until the JK Wrangler Edition (2007-18), original owners had Dana 30 axles up front, except on the Rubicon trim level, which again had Dana 44 front and rear. Some very early production two-door JK models had a Dana 35 rear axle, but Jeep quickly switched production to Dana 44 rear axles. All original owners of the four-door JK Wrangler had a Dana 44 in the rear.

What Axles Are In My Jeep Jk

Currently, if you buy a new JL Wrangler, you get Dana 30 front axles and Dana 35 rear axles, unless you buy them specifically with the upgraded Dana 44s. Every Rubicon JL owner has a Dana 44 front and rear axle. These aren’t your dad’s Dana 30, 35 or 44 axles, even though Dana made them stronger and lighter than any other generation. So much so that they are not interchangeable with previous generations of axles. For more information on these axles, as well as other JL Wrangler modifications, check out our JL Wrangler Introduction page.

Lift. Am I Getting Screwed?

Also, if you are the original owner of the vehicle and want to verify exactly what you have, you can easily get your Jeep build specifications by entering your vehicle identification number on the Jeep website.

For most people, that Dana 30/35 (44) combination is good for daily driving and some light off-road activity. However, when you start upgrading Jeep components (read, adding extra weight), it also makes sense to upgrade the axles, especially if those upgrades include bigger, wider wheels and tires.

While there is no hard and fast rule that says “if you do ‘a’ you must do ‘b'”, many YJ and TJ owners swap out the factory axles for Dana 44 front and rear when going 33 or 35. – inch tires. The same goes for JK owners who outgrow 35″ tires. Because the alternative is that those huge tires, over time, will start to bend those factory axles. It’s not fun. Not for anyone.

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Dana 30 Jeep Wrangler Jk Rh Axle Assembly

You may have heard the terms before, but it’s important to understand which cycle is best for your needs.

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What Axles Are In My Jeep Jk

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There are only three types of JK Dana 44 front axles: bent, bent and under Jeeps that never leave the road. No one wants to throw money away and that’s what you fear when considering whether to upgrade your stock axle or replace it with a new aftermarket housing.

We spoke to Mel Wade at Off Road Evolution to round up our own good and bad experiences with these front axles and help you make the right decision for your JK. Mel sells complete Dynatrac Prorac 44 axles as well as axle sleeves and stubby kits for stock axle housings. There are certain factors that prompt you to propose a solution over one to better meet the needs of your customers.

What breaks? There are three main things that can go wrong over time with a stock front axle. Common flexion is among the most talked about. Stock Dana 44 axle tubes are 2.50 inch OD with 0.25 inch wall thickness. The entire shaft is bent with the outer ends to form a smile. Not that the owner was laughing. The next weak link is the last forges. These can also cause alignment problems and tire wear due to bending. This is especially true for end forgings, as ball joints with 35 inch or larger tires are also fatigued. We’ve heard of casting center cracking and axle tubes coming off, but extreme braking is rare.

The two main deciding factors in the upgrade or replace dilemma are tire size and abuse. Tire sizing is simple. If you think you’ll be using 37-inch or larger tires at some point in the future, don’t skip it and go straight to buying a complete replacement axle. Even in a Jeep that isn’t doing serious off-roading, the extra weight and stress of heavy tires can tire the stock axle. Yes, yes, we’ve heard of people running Dana 30s with 40 inch tires and no problems. I’m the exception, and it’s like juggling swords: sooner or later you catch the wrong end.

Fad, A Theoretical Weak Spot In Wrangler’s Solid Axle

The crossover point when it comes to tire size is 35 seconds. This is the most popular size for JKs, and you can go either way at this point. That’s when how you use the Jeep and what kind of driver you are comes into play. If you’re only going to do the occasional wheelie on the Jeep and don’t need to tackle the toughest roads on the planet, upgrade the front axle. If your garage walls are covered with trophies of past transmission breakdowns caused by roads that make KOH competitors shudder,