The rear axle found in most 2004 Jeep Grand Cherokees is the Chrysler 8.25-inch rear axle. While the 8.25 is the standard setup for the WJ-generation Grand Cherokee of that year, exact configurations can vary by trim and options.
Overview of the 2004 Grand Cherokee’s rear-axle setup
The 2004 Grand Cherokee belongs to the WJ generation, which used several rear-axle designs across its lifecycle. For the vast majority of 2004 models, Jeep equipped the rear with the Chrysler 8.25-inch solid-axle housing, a robust and widely serviced unit that balanced durability with ease of sourcing parts. Depending on drivetrain and factory options, gear ratios in the 8.25 could vary, affecting towing and performance characteristics.
How to confirm the exact axle in your vehicle
To verify your vehicle’s specific rear axle, inspect the differential housing for identifying marks or an axle-code tag. Many WJ Grand Cherokees show an indicator on the differential cover or axle housing that reveals the model (for example, 8.25) and the gear ratio (such as 3.55, 3.73, or 4.10). If markings are unclear, refer to the vehicle’s VIN build sheet or service manual, or consult a dealership or reputable repair facility that can look up the exact configuration by VIN.
Notes on variations and replacements
While the Chrysler 8.25 rear axle is the predominant setup for 2004 Grand Cherokees, there were occasional regional or special-edition deviations. However, parts availability and aftermarket support for the 8.25 are strong, making it a common reference point for repairs, upgrades, and replacements for this model year.
Bottom line
For the majority of 2004 Grand Cherokees, you’re likely dealing with the Chrysler 8.25-inch rear axle. Always confirm with a physical inspection of the differential or your build sheet to ensure you have the exact model and gear ratio for your specific vehicle.
Summary
The 2004 Jeep Grand Cherokee, part of the WJ generation, primarily uses the Chrysler 8.25-inch rear axle. This setup is well-supported in the aftermarket, and you can verify the exact specification via differential markings or your vehicle’s VIN/build sheet to account for any minor variations.
What axles does a 2004 Jeep Grand Cherokee have?
Speaking of axles, the Dana 30 can be found in the front of all models, with either the Dana 35 or aluminum-centersection Dana 44 brining up the rear.
How do you tell if your Jeep has a Dana 35 or Dana 44?
If the cover shape is hard to read, look for axle tags or tube stampings near the center section. JK rears are nearly always Dana 44, except for a small batch of early 2007 two-door models that shipped with Dana 35. Dana 35 rear covers are more rounded, while Dana 44 rear covers mirror the flatter Dana 44 shape.
What axles are in my Jeep Grand Cherokee?
Your Jeep Grand Cherokee has used various axles over the years, including the Dana 30 front axle and Dana 35 or Chrysler 8.25 rear axle. The specific axle in your vehicle depends on the model year and original options package.
What are the worst years for the Jeep Grand Cherokee to avoid?
Jeep Grand Cherokee Years to Avoid
- 2011: Known for higher complaint volume and electrical concerns.
- 2012: Frequently associated with engine, shifting, and reliability concerns.
- 2013: Reported issues include electronics and drivetrain complaints.
- 2014: One of the more commonly discussed years for reliability concerns.