Looking for advice on which master AX15 rebuild kit to get

Hello,
I’m planning to fix my AX15 transmission in my 1999 TJ Jeep. There are a lot of not-so-good repair kits available, so I want to make sure I buy a good one. While I’m working on it, is there anything else I should do to improve it?

When repairing your AX15 transmission, it’s crucial to choose a high-quality repair kit to ensure long-lasting performance. Look for kits that include genuine or high-quality replacement parts and have positive reviews from other Jeep owners.

While you’re working on the transmission, consider the following improvements for your 1999 TJ Jeep:

  1. Clutch Replacement: Since you’re already working on the transmission, it might be a good time to replace the clutch if it’s showing signs of wear. A new clutch can improve shifting and overall performance.
  2. Transmission Mount: Check the transmission mount for wear and replace it if necessary. A worn mount can cause excessive vibration and noise.
  3. Fluids and Filters: Replace the transmission fluid and filter to ensure smooth operation. Use the recommended fluid for your transmission.
  4. Shifter Bushings: Replace the shifter bushings if they are worn. This can improve shifting precision and feel.
  5. Inspect Driveshafts and U-joints: While not directly related to the transmission, it’s a good idea to inspect the driveshafts and U-joints for wear and replace them if necessary.
    6Transfer Case Service: Consider servicing the transfer case while you have the transmission out. This can help ensure smooth operation and prevent future issues.
  6. Upgrade Shifter: Consider upgrading to a short-throw shifter for improved shifting feel and precision.

By taking these additional steps, you can not only improve the performance and longevity of your transmission but also enhance the overall driving experience of your 1999 TJ Jeep.

When selecting a master rebuild kit for your AX15 transmission, it is important that you choose one that is known for its quality and completeness.
Here are some recommendations:

Rebuild Kit Recommendations:

  • Transparts Warehouse: This kit is well-reviewed by Jeep enthusiasts and includes all the necessary components, including a seal for the top of the transmission under the shifter.
  • Crown Automotive: Available on various platforms, this kit is comprehensive, though some users have reservations about the brand

Improvements for AX15 Transmission: While you’re rebuilding your AX15 transmission, consider the following upgrades to improve its performance and longevity:

  • Upgraded Seals and Gaskets: Look for kits that offer seals and gaskets made from stronger, heat-resistant materials, especially if you plan on using your Jeep for towing, off-roading, or performance driving4.
  • New Shifter Components: Some kits include new shifter components and an anodized aluminum shifter knob, which can enhance the shifting experience5.
  • Stronger Gear Alloy: A stronger gear alloy can be beneficial, particularly if it fits the external slave cylinder clutch system and has the appropriate pilot shaft tip size

Fixing your AX15 yourself is a great way to save money and learn about your Jeep! Finding a good quality repair kit is important, so I hear you there.

In addition to the recommendations, it can be helpful to check online Jeep forums for user experiences with different rebuild kits.

Sometimes people share specific part numbers or brands they’ve had success with.