JEEP AX15 TRANSMISSION FOR SALE

Code: vaz154
(2 customer reviews)
JEEP AX15 TRANSMISSION FOR SALE
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Product Overview & Specifications

  • In Stock, Jeep AX15 Transmissions Available
  • Free Shipping to All 50 States via Freight Pallet, 5 to 10 Business Days
  • Donor Jeep Confirmed (Wrangler YJ / Wrangler TJ / Cherokee XJ / Comanche MJ)
  • Engine Pairing Documented (4.0L I6 / 2.5L I4 / 4.2L I6)
  • All 5 Forward Gears Tested
  • Synchronized Reverse Engagement Verified (Distinguishing AX15 Feature)
  • Overdrive 5th Gear (0.79:1) Engagement Confirmed
  • Synchro Condition Assessed (Brass Synchro Wear Verified)
  • Input Shaft Verified (10 spline, 1.125 inch diameter)
  • Output Shaft Verified (23 spline, 1.375 inch diameter)
  • Bellhousing Pattern Confirmed (Jeep AMC / Chrysler Specific)
  • Aluminum Case Inspected for Cracks

$1,499.00

In Stock
100% Fitment Assistance
15 Days Replacement Warranty
Free & Fast Shipping
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Description

Durable Jeep AX15 Transmission for Sale

This robust gearbox was popular in Jeep Wranglers and Cherokees from 1988 to 1999, known for its durability and smooth shifting. Whether replacing a worn-out transmission or upgrading from the less capable AX5 (4-cylinder 5-speed) or older 4-speed transmissions, this AX15 transmission for sale at our store offers improved gear ratios and a stout Aisin Warner design that can handle the demands of both on-road driving and off-road adventures. This Jeep AX15 transmission for sale at our site is thoroughly inspected and ready to breathe new life into your Jeep project.

About the AX15 Transmission

The Jeep AX15 transmission is a highly regarded manual gearbox used in Jeep vehicles from 1988 to 1999. Known for its durability and smooth shifting, the AX15 is a five-speed transmission featuring synchronized reverse gear (a notable feature for the era) and overdrive fifth gear (0.79:1), making it ideal for both on-road and off-road driving. Its robust Aisin Warner design and compatibility with various Jeep models, including the Wrangler YJ and TJ, Cherokee XJ, and Comanche MJ, make it a popular choice among Jeep enthusiasts. Because the AX15 is essentially the same fundamental transmission as the Toyota R150 (with a Jeep-specific bellhousing), it benefits from proven Aisin engineering and durability.

Why Choose the AX15 Transmission?

The Aisin-Warner AX15 is a medium-duty, 5-speed manual transmission that has earned a reputation for reliability and durability. Originally featured exclusively in Jeep models from 1988 to 1999, this AX15 transmission for sale today is a popular choice for Jeep owners looking to upgrade or replace their existing transmission. The AX15 fits factory bolt-in into Wrangler YJ, Wrangler TJ (through 1999), Cherokee XJ, and Comanche MJ, making it a far easier swap than alternatives that require custom adapters.

Key Features of the AX15 Transmission

  • Overdrive 5th Gear (0.79:1): Enhances fuel efficiency and reduces engine wear during highway driving by lowering engine RPM at cruising speeds.
  • Synchronized Reverse Gear: Facilitates smoother and easier engagement, reducing gear grinding that’s common with non-synchronized reverse designs.
  • Aluminum Case: Lightweight (just 97 lbs total transmission weight) yet sturdy, aiding in heat dissipation and overall transmission durability.
  • Interchangeability: Compatible with a range of Jeep transfer cases (NP207, NP231 Command-Trac, NP242 Selec-Trac, NP249 Quadra-Trac) and Jeep engines (4.0L I6, 4.2L I6, 2.5L I4), offering flexibility in vehicle modifications.
  • Rebuildable Design: Easy to service and rebuild, extending the transmission’s lifespan. Rebuild kits readily available from Aisin, Mopar, and aftermarket suppliers (Cottman, Allstate Gear, etc.).
  • Wide Gear Ratio Spread: Provides a good balance between low-end torque (3.83:1 first) and high-speed cruising capabilities (0.79:1 overdrive). The 4.84:1 ratio spread (between 1st and 5th) gives the AX15 wide flexibility.
  • Toyota R150 Heritage: The AX15 shares its fundamental architecture with the Toyota R150 manual transmission, benefiting from Aisin’s proven design used in millions of Toyota pickup, 4Runner, and Tacoma applications.

Compatibility: Jeep Applications

The AX15 transmission is compatible with the following Jeep models and engines:

Vehicles:

  • Jeep Cherokee (XJ) 1988 to 1999 with 4.0L I6 or 2.5L I4
  • Jeep Comanche (MJ) 1988 to 1992 (Cherokee-based pickup truck)
  • Jeep Wrangler (YJ) 1989 to 1995 with 4.2L I6 or 2.5L I4
  • Jeep Wrangler (TJ) 1997 to 1999 with 4.0L I6 (replaced by NV3550 in 2000)

Engines:

  • Jeep 4.0L Inline-6 (AMC / Jeep “PowerTech” 242 cu in, 190 to 220 HP, the legendary Jeep I6)
  • Jeep 2.5L Inline-4 (AMC / Jeep 150 cu in, 121 to 130 HP)
  • Jeep 4.2L Inline-6 (AMC 258 cu in, predecessor to the 4.0L)

Note on TJ Wrangler 2000+ models: The AX15 was replaced by the NV3550 in TJ Wranglers starting in model year 2000. If you have a TJ from 2000 to 2006, you need an NV3550, not an AX15. Earlier 1997-1999 TJ Wranglers use the AX15.

Quality Assurance

When you purchase an AX15 transmission for sale from us, you can expect:

  • Thorough inspection and testing of all used transmissions
  • Donor Jeep identification (Wrangler YJ, Wrangler TJ, Cherokee XJ, or Comanche MJ)
  • Engine pairing documentation (4.0L I6, 2.5L I4, or 4.2L I6)
  • All 5 forward gears and synchronized reverse tested
  • 5th gear overdrive engagement verified
  • Aluminum case crack inspection
  • Bellhousing pattern confirmation for Jeep applications
  • Competitive pricing

Why Choose Our Used AX15 Transmissions?

  • Cost-effective alternative to new / reman ($1,499 vs $1,800 to $2,800 reman)
  • Proven reliability with millions of Aisin AX15 / R150 applications worldwide
  • Wide compatibility with all Jeep XJ / YJ / TJ / MJ applications
  • Synchronized reverse for smoother shifting
  • Lightweight 97 lb case for easier installation than HD truck transmissions

Don’t miss this opportunity to upgrade your Jeep with a reliable AX15 transmission. Browse our selection to find this Jeep AX15 transmission for sale today and give your vehicle the performance it deserves. Here at Vaz Auto Solutions, you will find the AX15 Transmission for sale at the perfect price. We work to make your hunt for the perfect part for your automobile more seamless and efficient.

AX15 vs Other Jeep 5-Speed Manuals

Choose AX15 for: XJ Cherokee restoration, YJ Wrangler rebuild, TJ Wrangler 1997-1999, MJ Comanche projects, off-road builds with 4.0L I6.

Additional information

bellhousing-to-tailshaft-length

22 inches
fluid-capacity

2.75 quarts
fluid-type

ATF+4 (Mopar specification) or compatible Mercon / Dexron ATF
gear-ratios

1st: 3.83, 2nd: 2.33, 3rd: 1.44, 4th: 1.00 (direct), 5th: 0.79 (overdrive), Reverse: 4.22
input-shaft

1.125 inches diameter, 10 splines
output-shaft

1.375 inches diameter, 23 splines
overall-length

24 inches
torque-rating

280 lb-ft
weight

97 pounds (lightweight aluminum case)
type

Manual transmission
Model

maker

Aisin Warner
speeds

5 forward speeds with overdrive 5th and synchronized reverse
case-material

Aluminum alloy
compatibility

1999 Jeep AX15 Transmission (covers 1988-1999 production range)
price

$1, 499.00

2 reviews for JEEP AX15 TRANSMISSION FOR SALE

  1. Tom Baker (verified owner) –

    Solid AX15 from Vaz Auto Solutions. Good price, arrived in decent time. Installed in my Jeep without issues. Shifts well, but packaging could’ve been better. Overall, happy with the purchase.

  2. Dave Wilson (verified owner) –

    Perfect fit for my Jeep! Vaz Auto Solutions delivered a great AX15 at an unbeatable price. Quick shipping, excellent customer service. Transmission works like new. Highly recommend

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Frequently Asked Questions

Why is the AX15 transmission popular among Jeep enthusiasts?

The AX15’s reputation for durability, smooth shifting, synchronized reverse, and off-road capability makes it a favorite for Jeep owners. The Aisin Warner design (shared architecture with the Toyota R150) brings proven Japanese engineering quality to Jeep applications. The AX15 is also one of the few manual transmissions with factory synchronized reverse in its production era, which dramatically improves drivability over non-synchronized reverse designs. The 4.84:1 ratio spread between 1st and 5th gear provides excellent flexibility for both highway driving (overdrive 5th) and off-road crawling (3.83:1 first when paired with low-range transfer case).

Can the AX15 transmission handle off-road conditions?

Yes, the AX15’s robust Aisin design and synchronized reverse gear make it well-suited for challenging terrain encountered during off-road adventures. The 3.83:1 first gear, when combined with the typical Jeep low-range transfer case (2.72:1 NP231 or 2.61:1 NP242), provides excellent crawl ratios for technical rock crawling and steep grades. The aluminum case dissipates heat well even during sustained low-speed off-road use.

What modifications can be done to enhance AX15 performance?

Common upgrades include: – Strengthened brass synchros (for high-mileage rebuilds) – Heavy-duty input shaft bearings – Aftermarket short-throw shifters (Hurst, B&M, Pro Comp) – Upgraded clutch packs for high-power 4.0L stroker builds – Heavy-duty mount bushings – Gear oil upgrade for hot climate operation

Does the AX15 transmission require special maintenance?

Regular fluid changes using ATF+4 or equivalent Mercon ATF are recommended every 30,000 to 50,000 miles. Ensuring proper clutch hydraulic adjustment is important since the AX15 uses an internal slave cylinder. Keeping the transmission cool during heavy off-road use extends synchro life.

Is the AX15 transmission suitable for towing?

Yes, the AX15 can handle moderate towing tasks effectively, thanks to its strong gear ratios (3.83:1 first for launches) and durable Aisin construction. The 280 lb-ft torque rating is well-matched to the Jeep 4.0L I6’s typical output (~225 lb-ft). For heavy towing, consider the transmission cooler upgrade.

Can the AX15 transmission be swapped with other Jeep transmissions?

Yes, the AX15 can be swapped between compatible Jeep models with the appropriate transfer case adapter and bellhousing. Common swaps include: AX15 from a Cherokee XJ into a YJ Wrangler, AX15 from a TJ Wrangler into an XJ Cherokee, etc. The AX15 cannot easily be swapped into non-Jeep vehicles without significant adapter fabrication.

Is the AX15 transmission compatible with aftermarket performance upgrades?

Yes, various aftermarket companies offer upgrades for the AX15 including: – Heavy-duty clutch kits (Centerforce, Luk, ACT) – Short-throw shifters – Strengthened internals (input shaft, output shaft, gears) – High-performance synchros These enhance the transmission’s performance capabilities for stroker-built 4.0L engines (typical output 250+ HP) or modified Cherokees / Wranglers.

What's the difference between AX15 and AX5?

– AX15: 5-speed manual for 4.0L I6, 4.2L I6, and 2.5L I4 , 280 lb-ft torque rating, 97 lbs (this listing) – AX5: 5-speed manual for 2.5L I4 ONLY , 170 lb-ft torque rating, ~85 lbs (smaller, weaker) The AX15 is the heavier-duty AX-series transmission. If your XJ or YJ has a 4-cylinder, you may have the AX5 originally; the AX15 is a common upgrade for I6 swap projects.

Product Warranty

15 Day Replacement Warranty.

Covered:

  • Internal defects at delivery

Not Covered:

  • Improper installation
  • Damage from operation above 280 lb-ft torque rating
  • Clutch wear post-delivery
  • Fluid contamination
  • Labor costs
  • Freight damage

Contact (240) 301-0095 within 15 days.

Trust Badges

  • Donor Jeep Documented: Wrangler YJ / TJ / Cherokee XJ / Comanche MJ
  • Engine Pairing Confirmed: 4.0L I6 / 2.5L I4 / 4.2L I6
  • All 5 Forward Gears Tested: First through overdrive 5th
  • Synchronized Reverse Verified: Distinguishing AX15 feature
  • Overdrive 5th Confirmed: 0.79:1 ratio engagement
  • Synchros Assessed: Brass synchro wear documented
  • Input Shaft Verified: 10 spline, 1.125 inch confirmed
  • Output Shaft Verified: 23 spline, 1.375 inch confirmed
  • Bellhousing Pattern Confirmed: Jeep AMC / Chrysler specific
  • Aluminum Case Inspected: No cracks or impact damage
  • Free Shipping All 50 States: Freight pallet
  • No Core Charge: Keep your old transmission
  • 15 Day Warranty: Internal defects covered

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