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Advance Adapters Now Offers Brand New Aisin AX15 Transmissions!


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Members and Guests...We've had some great discussion on rebuilding the popular Aisin AX15 transmission, and my 'how-to' rebuild rental at Vimeo On Demand (http://www.vimeo.com/ondemand/ax15rebuild) has received solid feedback as a resource for shops and DIY level techs!  I'm pleased to see many are able to successfully rebuild and thoroughly restore the AX15, made popular in 1989-1999 model year Jeep vehicles with the 4.0L engine.  The AX15 transmission rebuild coverage and our discussion here at these forums also serve other applications of the AX15, including the Dodge Dakota, some Toyota truck models (and performance car applications) plus Isuzu and GM use. 

 

There are, however, instances when a transmission is simply not rebuildable.  You do the teardown, follow my inspection guidelines or a factory shop manual, and discover that the wear exceeds any reasonable parts replacement costs...In these cases, we do have an outlet and sensible alternative:  Advance Adapters and a new AX15 transmission!

 

Note: Many owners have discovered that a "good used" transmission is an oxymoron for an off-road 4x4 vehicle that gets oversized tires and a lot of shifting either off-pavement or in city traffic.  I'm not an advocate of buying "good used" unless you know the history of the donor vehicle.  Any 1989-99 Jeep 4x4 transmission has seen more than enough use and is a candidate for my "blueprint rebuild" or a complete replacement.  "Good used" can simply translate to "definitely used"!  In the day, a BW T-18 or T-98, a GM SM420 or SM465, a New Process NP435 or other commercial grade, iron case "truck" transmissions (or the more contemporary NV4500 or NV5600) were often still in serviceable condition after the vehicle expired.  That will not be the case with a used, higher mileage AX15 transmission, it will not provide long or reliable service as a high mileage used purchase.  Optimistically, such a "core" might be rebuildable.

 

I have worked closely with Advance Adapters' full line of transmission to transfer case adapters, Atlas transfer cases and other products for decades now.  (We can thank Advance Adapters for its support at the magazine and these forums, too!)  For many owners, the fatigue and normal wear of a powertrain provides the incentive for unique and popular upgrading of a 4x4 powertrain.  In that arena, the Aisin AX15 has become the contemporary transmission of choice for stock 4.0L restorations and even swaps of moderate horsepower V-8 power into a Jeep 4x4 chassis.  For horsepower to the 275-300 range (like an LS3 or a 4.6L Jeep inline six stroker) plus a useful overdrive gear, I consider a freshly and properly rebuilt AX15 as a prime candidate for a street/trail "build".  These swaps or buildups do require either a rebuilt or new Aisin AX15.  This contemporary transmission has also become the replacement for the later, expensive to rebuild 6-speed Jeep TJ Wrangler transmissions.

 

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Yes, a brand new AX15 transmission, ready for bolt-in replacement in Jeep and many Dodge Dakota, Toyota and Isuzu applications!  These units are close ratio five-speeds (5th overdrive) that can bring new life into a higher mileage vehicle.  They also deliver a desirable level of contemporary torque and stamina for moderate horsepower V-8 transplants where an overdrive is desirable.  (These units even look great, click on these photos!)

 

The exciting news is that you have the option of buying a new Aisin AX15.  These units, available through Advance Adapters (a direct Aisin distributor), provide all of the legendary features and reliability found in new Jeep 4x4s from the Jeep YJ/TJ and XJ Cherokee era (or Dodge Dakota 3.9 V-6 models and other AX15 applications).  Advance Adapters has a long reputation for serving the 4WD community, whether sponsoring enthusiast runs at Moab, Utah or supporting the off-road racing community.  Advance Adapters maintains this approach with the pricing of these new Aisin AX15 transmissions. 

 

So, if your AX15 is either too worn for rebuilding or you're building a contemporary Jeep 4x4 project for the street/trail or off-road use, consider the Advance Adapters AX15 option!  For more details, visit the Advance Adapters website at:  http://www.AdvanceAdapters.com!

 

Moses

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