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What is an AAM 11.5 axle?

The AAM 11.5 axle is a type of automotive axle assembly produced by American Axle & Manufacturing (AAM), a leading global tier-one automotive supplier. This axle is commonly found in various light-duty and medium-duty trucks, SUVs, and vans, providing a robust and reliable solution for power transmission and load-bearing capabilities.


What is an Axle?


An axle is a central shaft in a wheeled vehicle that connects the wheels and supports the vehicle's weight. It is responsible for transmitting the engine's power to the wheels, enabling the vehicle to move. The AAM 11.5 axle is a specific design that offers enhanced performance and durability compared to other axle configurations.


Key Features of the AAM 11.5 Axle



  • Robust Construction: The AAM 11.5 axle features a heavy-duty design with a 11.5-inch ring gear, providing increased strength and load-bearing capacity. This makes it suitable for use in larger, more powerful vehicles.

  • Improved Traction: The axle's design, combined with advanced differential systems, enhances traction and off-road capabilities, making it a popular choice for trucks and SUVs used in rugged terrain or towing heavy loads.

  • Durability: The AAM 11.5 axle is engineered to withstand the demands of heavy-duty use, with reinforced components and advanced manufacturing techniques that contribute to its long-lasting performance.

  • Versatility: This axle is compatible with a variety of vehicle platforms, allowing manufacturers to utilize it across different models and applications, from light-duty to medium-duty vehicles.


The AAM 11.5 axle is a crucial component in the powertrain of many trucks, SUVs, and vans, providing the necessary strength, traction, and durability to handle the demands of modern driving conditions and vehicle usage.

What are the three types of rear axles?


The three types of rear axles are the Semi-Floating Axle, used mainly in passenger vehicles for its balance of performance and economy; the Full-Floating Axle, utilized in heavy-duty applications for its robust design and high load-carrying capacity; and the Three-Quarter Floating Axle, which combines features of both ...



What size is the rear axle on a 2005 Dodge Ram 2500?


2003-2013 Dodge Ram 2500 11.5" Rear Axle.



What size tube is a 11.5 AAM axle?


The axle tubes on many of the GM versions of the 11.5 AAM axle are another weak point. They're built using a tube that is almost 4-inch diameter at the housing and reduces to 3.5 inches out to the spindle and only about ¼-inch thick.



How do I know what size my bike axle is?


  1. Look for markings. Before trying to measure your axle, look for markings on it.
  2. Find a metric ruler. Thru axles use millimeter measurements.
  3. Measure axle diameter. Your axle will be either 12, 15, or 20mm in diameter.
  4. Measure the axle length.
  5. Measure the thread pitch.
  6. Measure the thread length.
  7. Is it a Syntace Axle?



What does aam axle stand for?


Throughout the past 30 years, American Axle & Manufacturing (AAM) has delivered power that moves the world, earning a reputable stance as the number one leading global Tier 1 Automotive and Mobility Supplier. AAM specializes in metal-forming business units that represent the largest forging enterprise in the world.



Is a 14-bolt a 1 ton axle?


The 14bolt is found in a huge number of GM 4x4 pickup trucks and vans, 3/4 and 1 ton, from the 70's right through until at least the 2000's.



What is the difference between an AAM 1150 and a 14 bolt?


The AAM 1150 uses an 11½-inch ring gear, but retains the same axleshaft diameter as the 14-bolt. Although there are a few versions, the full-float, 8-lug 14-bolts are the most desirable for those looking to build an off-road rig or upgrade their pickups light-duty rear axle.



What is the difference between a semi float and a full float?


Inside a full-floater, the axleshaft has only one job: to turn the combined hub and wheel. Inside a semi-floater, the axleshaft has two jobs: support the vehicle weight as well as turn the wheel. Break a full-floating axleshaft, and the vehicle will still roll and support its own weight.



How do I identify my axle?


Sprung and Torflex axle labels can be found on the side of the axle facing your rear bumper. The axle label provides critical manufacturing information, including the axle serial number, axle capacity, and axle build information. Locating your axle label will help ensure that you identify your axle correctly.



Who uses AAM axles?


AAM supplies all major automotive original equipment manufacturers (OEMs), such as General Motors Company (GM) and Fiat Chrysler Automobiles US LLC (FCA), as well as several tier I suppliers.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.