Product Description
The ATS 303-900-8272 42RLE Performance Valve Body is a precision-engineered upgrade designed for 2003-2006 Jeep vehicles equipped with the 42RLE automatic transmission. Built to improve shift quality, transmission efficiency, and overall durability, this valve body upgrade is ideal for both daily driving and off-road applications.
ATS modifies the factory valve body to increase line pressure, improve clutch engagement, and reduce slippage—resulting in firmer, more consistent shifts. This helps eliminate common 42RLE issues such as delayed shifting, overheating, and premature clutch wear.
Whether you're running larger tires, towing, or simply looking to improve reliability, the ATS performance valve body delivers enhanced transmission control and long-term durability.
FAQ
What does the ATS 303-900-8272 valve body upgrade do?
It improves transmission performance by increasing line pressure, reducing slip, and delivering firmer, more consistent shifts.
What transmission does this fit?
This valve body is designed for vehicles equipped with the 42RLE automatic transmission.
Is this upgrade beneficial for off-road use?
Yes. Improved shift control and durability make it ideal for off-road, towing, and heavy-use applications.
Do I need tuning for this valve body?
No tuning is required, but tuning may further enhance performance depending on your setup.
Why upgrade the factory valve body?
The factory valve body can suffer from poor pressure control and soft shifts. ATS upgrades address these issues to improve reliability and performance.
FITMENT
2003-2006 Jeep Wrangler 4.0L with 42RLE Transmission
2003-2006 Jeep Liberty 3.7L with 42RLE Transmission
2003-2006 Jeep Grand Cherokee 4.0L / 3.7L with 42RLE Transmission
Specifications for ATS 303-900-8272
| Specification | Details |
|---|---|
| Part Number | 303-900-8272 |
| Product Name | ATS 42RLE Performance Valve Body |
| Transmission Compatibility | 42RLE Automatic |
| Vehicle Fitment | 2003-2006 Jeep Wrangler, Liberty, Grand Cherokee |
| Engine Compatibility | 3.7L / 4.0L Gas Engines |
| Function | Improves Line Pressure, Shift Quality, and Transmission Durability |
| Included Components | Performance Valve Body Assembly |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Information | Standard Ground Shipping |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
