ALL-CARB AC3438435B Transmission Gas AX15-KA 4.2L L6

( Brand: All-carb ), ( Manufacturer Part Number: AC3438435B ), ( Manufacturer Warranty: 1 Year ), ( Type: Manual Transmission ), ( Items Included: Transmission Assembly ), ( Oe Part Number: Ax15-ka ), ( Color: Silver ), ( Note: Verify Vehicle Model Information Before Purchase ), ( Make: For ), ( Engine: 2.5l L4 4.0l L6 4.2l L6 )

Review ALL CARB New Transmission Assembly Jeep 4.2l L6 Gas fits WRANGLER 1989–1993

The AX15-CA transmission, specifically the all-carb AC3438435B variant, is a high-performance transmission option designed for the 1989-1990 Jeep Wrangler models equipped with the 4.2L L6 gas engine. This transmission is a five-speed manual unit, capable of delivering exceptional power transfer and torque to the wheels for an enhanced driving experience.

The all-carb designation of this transmission implies that it utilizes carburetors to manage the fuel mixture in the combustion process. This setup can be advantageous for off-road enthusiasts, as it offers more control over the engine's response and can provide better low-end torque for crawling over challenging terrain.

The AC3438435B AX15-CA transmission features a durable cast iron housing that provides excellent heat dissipation and resistance to wear and tear. The gears are precision-machined from high-strength steel, ensuring a long service life and smooth operation. The synchronizers are of the ball-bearing type, providing effective clutch engagement and smooth gear changes.

The clutch system of this transmission is designed to handle the increased power output of high-performance engines. The clutch plates are made from high-friction material, while the pressure plate and release bearing are engineered for strength and durability. The clutch fork and pedal are precision-crafted for easy engagement and smooth release.

The shifter assembly of the AC3438435B AX15-CA transmission is designed for easy use and smooth operation. The shifter knob is ergonomically shaped for comfortable grip, while the shifter boot is made from durable material to protect against wear and tear. The shifter cables are precision-machined for smooth operation and long service life.

The AC3438435B AX15-CA transmission is compatible with various performance upgrades, including high-performance exhaust systems and aftermarket engine tuning. It is a direct replacement for the stock transmission, making for a straightforward installation process. The transmission comes with a detailed instruction manual, making it easy for even the most novice DIY enthusiasts to install it themselves.

In summary, the AC3438435B AX15-CA transmission is a high-performance, all-carb transmission designed specifically for the 1989-1990 Jeep Wrangler models with the 4.2L L6 gas engine. It features a durable cast iron housing, precision-machined gears, effective clutch system, and easy-to-use shifter assembly. This transmission is an excellent choice for off-road enthusiasts looking to enhance their Jeep's power and torque output, while still maintaining the classic manual transmission feel.

The Aisin AW AT3438 4-speed automatic transmission is a popular choice for Jeep Wrangler owners due to its durability and suitability for off-road use. However, like any automotive component, it has its pros and cons. Here's a breakdown of each:

1. Durability: The AT3438 is known for its robustness and ability to withstand the rigors of off-road driving. It's a common choice among Jeep enthusiasts for this reason.

2. Availability: The transmission is readily available on the aftermarket, making it relatively easy to source and install.

3. Cost-effective: Compared to other automatic transmissions, the AT3438 is generally more affordable, making it an attractive option for budget-conscious buyers.

4. Compatibility: The transmission is compatible with the 4.2L L6 gas engine used in the 1989-1990 Jeep Wrangler.

5. Off-road Performance: The AT3438's low range gearing makes it ideal for off-road use, providing excellent crawl ratios for tackling steep inclines and rocky terrain.

1. Complexity: Installing the AT3438 can be a complex process due to its size and the number of components involved. It's recommended to have the transmission professionally installed.

2. Adapter Kit: To install the AT3438 in a Jeep Wrangler, an adapter kit is required. This adds to the overall cost of the transmission and installation.

3. Shift Quality: Some users report that the transmission's shift quality is not as smooth as other automatic transmissions. However, this can be improved with proper adjustment and maintenance.

4. Compatibility with Electronics: The AT3438 may not be compatible with all electronic systems, such as fuel injection, and may require modifications or additional components for proper operation.

5. Clutch Pack: The transmission uses a clutch pack, which can wear out over time and require replacement, adding to the overall cost of ownership.

In conclusion, the Aisin AW AT3438 automatic transmission offers excellent durability, off-road performance, and cost-effectiveness for Jeep Wrangler owners. However, it comes with some complexities, such as the need for an adapter kit and potential shift quality issues. Ultimately, the decision to purchase this transmission depends on individual priorities, budget, and level of mechanical expertise. If you're looking for a robust, affordable transmission for off-road use, the AT3438 may be the right choice for you. Otherwise, you may want to consider other options with smoother shift quality or easier installation.

Details:

Package Include: 1 Transmission Assembly. Any direct return of purchased items will not be processed.: Manufacturer Warranty:1 Year. New List Item.

Type: Transmission Assembly. Direct fit,no modification requires ,easy installation. Application For. 100% Brand new.

Durable Construction High quality at a budget-friendly price. Premium quality aftermarket parts. Hardware as Shown in the Picture Above. New AX15-KA Transmission Assembly For Jeep Wrangler 1989 1990 4.2L l6 GAS, Part Number.

part #: ac3438435b prices

• $1199.99-$1289.99

specifications complmanu:

• for models: Wrangler
• for makes: Jeep
• for years: 1989-1993
• brand: All-carb
• mpn: Ac3438435b
• manufacturer warranty: 1 Year
• type: Manual Transmission
• items included: Transmission Assembly
• oe part number: Ax15-ka
• color: Silver
• note: Verify Vehicle Model Information Before Purchase
• make: For
• engine: 2.5l L4 4.0l L6 4.2l L6

offer complmanu:

• sold: 0
• best offers: True
• quantity: 10
• started: January 29, 2026
• options: Ship-to-home
• availability: In Stock

general complmanu:

• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission
• condition: New

payments complmanu:

• wAllet: Google-pay
• credit card: Discover
• other

shipping complmanu:

• cost: $0.00
• type: Fixed
• service: Standard
• transit: 4-8 Days
• class: Standard

returns complmanu:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

seller complmanu:

• rating: 99.2%
• # reviews: 7642
• city: Monroe Township, New Jersey

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