SKU: 71294982424

ATS Diesel 309-924-8272 Stage 2 42RLE Transmission Package 4WD 2003-2006 4.0L Jeep

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Description

ATS Diesel 309-924-8272 Stage 2 42RLE Transmission Package 4WD 2003-2006 4.0L JeepATS 42RLE Transmission Packages, 2003 2006 4. 0L Jeep. On the Trail or Street, the ATS 42RLE is backed by a 5 Year 500,000 Mile Warranty. The ATS 42RLE is engineered to hold the power and abuse Jeep owners can throw at it. Substantial increases in clutch pack surface area, line pressure and shift quality provide the reliability Jeep owner's demand. 42RLE Transmission: The 42RLE transmission that is used in the 2003 to 2012 Jeep was never designed to

ATS 42RLE Transmission Packages, 2003-2006 4.0L Jeep. On the Trail or Street, the ATS 42RLE is backed by a 5 Year / 500,000 Mile Warranty. The ATS 42RLE is engineered to hold the power and abuse Jeep owners can throw at it. Substantial increases in clutch pack surface area, line pressure and shift quality provide the reliability Jeep owner's demand.

42RLE Transmission:
The 42RLE transmission that is used in the 2003 to 2012 Jeep was never designed to handle the abuse of aftermarket add-ons such as oversized tires, extreme off-roading, increased power levels, higher gear ratios or towing. The small 42RLE factory transmission also has a very low volume cooling system, the low cooler flow does not allow adequate transmission fluid circulation through the torque converter to properly cool the torque converter during normal driving much less stressful situations such as four wheeling or hauling any additional weight over stock.

The primary hydraulic pump of the transmission is not big enough to support the increased pressures and lubrication that is needed to keep the clutch packs and gearsets alive at higher power levels.
Other design limitations of the 42RLE plague the ability of the transmission to handle much power over stock. The stock torque converter is manufactured using stamped steel parts that make up the lock-up porting of the converter. The converter cover will deflect under power causing the converter clutch to slip under load creating excessive heat and clutch material to shed from the lock-up piston.

The combination of heat and debris from the converter clutch causes transmission failure as the material from the torque converter is flushed into the transmission.

The ATS modified 42RLE has been redesigned to correct all these problems and handle increased power levels of larger displacement engines, supercharged or turbocharged engines, larger tires, or heavy towing. We understand the real-world abuse that this transmission is asked to do in modified applications, so we came up with the fixes for it.

ATS has developed a combined technology utilizing recalibration of the hydraulic circuits inside the transmission, including revamped accumulator rates, reprogramed clutch to clutch apply and release timings, and line pressure rise rate to perfectly match the torque output of the engine. These enhancements, along with other key hydraulic modifications which ATS makes, must be done to ensure the clutch packs have the correct apply and release rates when commanded on or off. As well, the transmission hard parts have many limiting weaknesses which do not allow for increased power levels over stock. Specifically, the light duty shafts and hubs must be addressed.

All these areas are addressed in our transmission to allow for increased power levels and reliability. Here are some of the modifications we do to the 42RLE transmission so it will handle the extreme use that you're looking for.

TruLok Torque Converter:
• Billet torque converter cover
• Heavy Duty Carbon Composite Lock-Up Clutch
• Harden Pump Hub
• Harden Turbine splines
• Stall Speed is better matched to Engine torque curve
• Torrington bearings construction for better thrust load

Inside the Transmission:

Pump Assembly:
The pump body is redesigned to utilize an oversized pump gearset, this provides for increased cooling and lubrication to the torque converter and transmission gearset. This redesign also eliminates the common pump problems that causes premature transmission failure due to excessive heat. The main pressure regulator circuit is modified to enable a broader range of pressure that can be commanded from the TCM. This allows the pump to lower line pressure when the engine is at low loads and more responsively raise pressure above stock to react with increased engine torque and horsepower levels.
Rotating Clutch Drum Assembly and Clutch Packs:

Clutch modifications are generally one of the most impactive and important items that can be upgraded in any transmission. In the case of the 42RLE transmission, there is little room for additional clutches so modifications must be done to pressure plates providing increased clutch surfaces. All clutch packs are replaced with High performance clutch plates and steel separator plates providing the best friction surfaces available. The problematic Over Drive clutch pack has an increased clutch count maximizing its ability to hold torque.

Valve body:
The valve body is considered the nervous system of the transmission; the valve body is responsible for converting the electrical signals from the TCM into hydraulic actions. The 42RLE uses a non-synchronous, clutch-to-clutch design. This means that the shifts from gear to gear must be timed perfectly thereby releasing and applying a friction clutch to achieve a flawless shift.

Because of the sensitivity of the hydraulic circuits, we heavily modify many areas of the valve body. Hydraulic oil flow is ported to certain clutch packs where additional pressure is needed. The accumulator piston seals have been redesigned to ensure hydraulic pressure integrity.

The accumulator plate is made of high-grade material to compensate for the additional pressure that the accumulator pistons and springs exert during heavy power situations. Also, the ATS 42RLE valve body can be purchased separately and installed in a stock transmission for increased transmission capacity.

Planetary Gearset:
The main planetary gearset is reinforced to prevent the pinion deflection that causes gearset failure.

Case and Pan:
The main transmission case does not require a lot of conditioning aside from a few small hydraulic modifications to allow for proper oil flow. At higher power levels, the transmission case does need to be strengthened. This is a simple fix that is taken care of with the optional heavy-duty cast aluminum transmission pan, which was designed in part to act as a girdle, thus eliminating the flex in the case.
The heavy-duty aluminum pan will clear aftermarket skid plates and the cooling fins allow the transmission to run cooler and it has an oversized drain plug on the side so it can be accessed for easy service.

ATS Auxiliary Transmission Cooler: (Included in Stage 2)
The ATS 42RLE Auxiliary Transmission Cooler Kit is designed to work with your factory-installed transmission cooler. The lower the temperature of the oil in your transmission, the better. With added cooling to combat the heat, you can minimize the risk of the most common transmission failure: overheating.

Features:

  • Auxiliary cooling that enhances factory transmission cooler
  • Extends transmission lifetime
  • Lightweight cooler, heavyweight performance
  • ATS limited warranty
  • Fits all 2003-2006 4.0L Jeep Wrangler JK with automatic transmissions

Application:
2003-2006 Jeep 4.0L

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71294982424

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4.4 ★★★★★
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Verified Purchase
James F Evans
Pawtucket, US
★★★★★ 5
Surprisingly amazing chair!
Color: Pink, Color: Pink
tl;dr: If you need a chair that has the features of this one, then this one is a winner! Hits above its weight class for sure. My wife is 5’. She’s small. For whatever reason she ended up with a chair made for big people, like 6+ feet and up to 500lbs type of a chair. She’d often even sleep on it and chill on it. The chair was big enough to fit 2 of her to be honest. It was an expensive chair that I won at some raffle and didn’t like myself. Over the years it ripped (got a cover for it) and even started to get lopsided (from the sleeping) and finally a spring broke (hence the pillow on it in the pictures) She obviously lives pink. I also wanted to get a chair where she could work and not end ip asleep on. Not like we have a couch or a bed for that 😂. This chair is very obviously smaller than her previous chair, it’s also significantly cheaper in price and build, it’s also not as durable feeling or stable, and it’s just not as padded. Yet somehow it’s an amazing chair that we both like better than her previous chair??? Like it’s crazy that this chair somehow works better in so many ways. Her desk is modified to be shorter than normal desks (again, she small lol) and her previous chair was just too big. The wheels are also like SUPER smooth, like you can run a chair race easily with it. It rolls over her rug and tucks into her desk (which is in our bedroom) easily. The amount of space this has save us when the chair isn’t being used is a lot. Previous chair was much bigger and didn’t tuck in at all. The color is nice and the padding is plenty for a small and much lighter than 500lbs woman. I’m 6 feet and 200 lbs and the chair is nice for me as well. My chair is bigger and more secure in the backing, which is similar to this one. The lowest tension setting on my chair is still too high for her to lean back on my chair. This chair has a lower tension minimum and she can easily lean back freely, as well as keep enough tension to work without sagging. This chair is surprisingly outstanding! I’m sure my wife will destroy it quicker than the last one, but it’s so cheap that even if it only lasts 1-3 years, I’ll happily buy it ones or twice more 🤷🏽‍♀️. Maybe by then they’ll invent a comfortable titanium chair that’s affordable that she won’t destroy 😂.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2024
R
Verified Purchase
Rebecca Olmos
Bozeman, US
★★★★★ 3
Mid.
Color: Light Purple
The chair is fine, and reasonably easy to put together. However, I've been using it for a little over a year and a half, and it's already falling apart. Random parts of it have fallen off, which is fine because it was still functional. But now the most frustrating part is that the wheels continue to pop off, and while the first attempts to pop them back on worked, they will not stay on now. This is obviously greatly impacting the stability, and I will need to purchase a replacement soon. For this price and lack of long-term durability, I would not buy again.
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Reviewed in the United States on January 4, 2026
B
Verified Purchase
Bridgett Kelly Rode
Los Angeles, US
★★★★★ 5
Alexa messed me up, but the company of the chair made it right!
Color: Light Purple, Color: Light Purple
I wanted something small with arms that moved out of the way when I wanted to slide my chair all the way into my desk for more space. This fit the bill. I loved the color blue and I had that in my cart for a bit. One day Alexa mentioned that an item that was in my cart was on sale. It was the chair. I let it be ordered. When it came it didn't exactly look blue to me. But I kept putting it together thinking maybe it was the lighting in the room I was assembling it in. I brought it to my craft room and lo and behold it is light purple. I looked at my order and sure enough it said light purple. Boo! I looked in my saved cart and the chair was gone. So I accepted it for an error. The next day I checked to see if I could return it. Thought I could, till I read that I would have to pay to return it. So I wrote the seller to tell them to ignore the return. And that was that. Till a couple days later I get an email from the seller asking if I would like a full refund or a replacement at no cost. I was like heck yeah send me the blue one. I was thrilled and I wanted to thank the seller for doing this without the return of the other chair. But I could not find a place to do that now. So here is where I will thank you. Thank you so much for doing this for me. You guys are AWESOME!. I love the chair and I love the blue color. I find it very comfortable, lite, easy to adjust, the size works great for me, and for the price the quality fits my needs. I do hope it lasts me for quite some time. Thanks again!
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Reviewed in the United States on January 9, 2026
S
Verified Purchase
Steve in Florida
Draper, US
★★★★★ 5
Awesome chair definitely recommend
Color: Blue, Color: Blue
It was amazing the color was spot on and it was very very easy to put together and the size is amazing for my 11 year old daughter maybe not for an older person it doesn’t recline as much as it says so if you want a reclining chair maybe I don’t recommend this chair but the quality is amazing and the adjustment capability is incredible the noise level is at 0 it is an amazing chair we just got it so I don’t know so much about the dupability so if you want this chair for a child or a tween maybe even a teen easy to put together beautiful blue color this is the chair for you.
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Reviewed in the United States on March 21, 2026
R
Verified Purchase
Rocky hardcore
Chelsea, US
★★★★★ 5
Easy instructions, comfortable cushions
Color: Pink
I just put it together and I love it!!! It's so comfortable and it was easy to put together. You can rock it back and forth which helps your back. The seat is very wide and the cushion is thick. Pink is my favorite color, and this chair satisfies my pink obsession.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026

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