The AX15 transmission has always been a great transmission able to handle the torque and horsepower of most V8s. The biggest problem now is the availability of new units. With the lack of availability of new NV3550s, we revisited the possibly of obtaining the Aisin Warner AX15 transmission and were successful. Although the torque specifications are not listed on this transmission in any service manual, we feel it‘s similar enough to the NV3550. The NV3550 was the transmission that superseded the AX15; and Jeep used the same engine with the same vehicle ratings. With the availability of AX15 transmissions, we can now offer some additional transmission retrofit applications.
Warranty: 12 months from time of shipping.
NOTE: These AX15 transmissions feature a 13 degree tailhousing rotation and are exact replacement transmissions for 1997-2000 Jeep TJ Wranglers. If installing this AX15 into Jeep Cherokee, the tailhousing rotation will be wrong. Cherokees transmission have a 23 degree rotation tailhousing. The rotation difference will lead to install issues with the Cherokee NP231 transfer case shifter.
AX15 Direct Replacement:
AX15 transmissions were used between 1988 to 1999 in the Jeep vehicles. Since these Jeeps are getting up in mileage, a new AX15 makes sense as a direct retrofit. Available in both an internal and external release bearing design.
AX15 retrofitting the AX5:
This is a newer kit for all 4 cylinder Jeeps 1987 to 2002. The AX5 is considered a light duty transmission compared to the AX15. Jeeps equipped with larger tires and lower gears in the axle & transfer case may find the weak link in the drivetrain is the stock transmission. You can now install the AX15 in place of the AX5 to gain some drivetrain strength. The nice thing is that when you’re ready to replace the 4 cylinder with a larger V6 or V8, the AX15 is an ideal transmission for the power increase. See kits 712563, & 712564, this transmission swap will also require a new transfer case input gear with 23 splines.
Peugeot 5 speed Replacement:
The AX15 is the exact same length. The kits we offer include a new input gear for either the New Process 231 or 207 transfer case. Due to vehicle variances, some applications may require transfer case linkage modifications. Kits include a new bellhousing, transfer case shifter linkage, a crossmember adapter mount to retain the stock Peugeot rubber mount, slave cylinder kit, and an input gear for your transfer case. See kit 27-3507AA and kit 27-3510AA
Doe to a miss print in the repair manual for my 97 Jeep Wrangler the OE transmission started to out bad. Call for 75 90 GL5 lub dont use GL5 lub in your AX15 it will eat away at the soft metals in it. Redline MT90 manaul trans lub is good. I hear a lot of Jeepers use. I ended up using Royal Purple synchromax the local auto store was out of the Redline stuff. Anyway Advance Adapters saved me about $1000 going with the 26-AX15 new unit they offer. Here on the Big Island Hawaii the best deal I could find was a rebuiled for a $1000 more then I payed with Advance adapters and they had the best deal over anyone I seen on the internet. The shipping wasnt bad and the packing it came in was great. I took out the old one and put in the new one with no problems and was able to take the Jeep out on a trip planned with off roading, thanks Advance Adapters. I look forword to using these guys again.