JEEP TRA-3603 Automatic Transmission 4.0L 42RE 197K

( Type: Automatic Transmission ), ( Ipn: Tra-3603 )

Review JEEP 4.0l Automatic Transmission Oem 197k fits CHEROKEE GRAND 4WD 2000–2004

The **Jeep Tra-3603 (2000-2004 Cherokee 4.0L Automatic Transmission 4WD 42RE)** is a rugged, versatile off-road transmission designed to deliver uncompromising power and durability for Jeep s iconic 4.0L inline-six engine found in the second-generation Cherokee (XJ) models. Built to withstand the demands of both on-road comfort and extreme off-road conditions, this transmission is a robust **4-speed automatic (42RE)**, featuring a **torque converter** that efficiently transfers power from the engine to the drivetrain while maintaining smooth shifting and responsive acceleration. The **42RE** designation signifies its compatibility with Jeep s **4WD (42RE) system**, which includes a **transfer case** and **locking rear differential**, allowing for enhanced traction in challenging terrains like mud, sand, or rocky trails. Engineered with a **heavy-duty planetary gearset** and reinforced housing, this transmission is engineered to handle the torque output of the 4.0L Magnum V6 (producing up to **210 horsepower and 240 lb-ft of torque**), ensuring reliable performance whether cruising on highways or tackling steep climbs off-road. Its **spiral-bevel final drive** and **limited-slip differential (LSD) option** further enhance its off-road capabilities, providing better stability and control in slippery or uneven conditions. The **automatic transmission** itself incorporates a **hydraulic valve body** for precise shift control, reducing wear and preventing harsh engagements, while the **thick-walled housing** and **sealed bearings** contribute to longevity, even under extreme loads. Whether paired with a **manual or automatic transfer case**, this transmission is a dependable choice for Jeep enthusiasts seeking a balance of power, durability, and adaptability in their Cherokee. Built to last, the **Tra-3603** is a testament to Jeep s legacy of off-road engineering, ensuring that drivers can trust it for years of dependable service.

### **Pros and Cons of Buying a 2000-2004 Jeep Cherokee (XJ) 4.0L 4WD with 42RE Automatic Transmission**

1. **Reliability (with proper maintenance)** The 4.0L inline-six engine is a proven, durable powerplant when maintained correctly. Many examples last well beyond 200,000 miles with regular oil changes and basic upkeep.

2. **Strong Off-Road Capability** The 42RE automatic transmission (a variant of the 42RLE) is a robust unit designed for heavy-duty applications, including Jeep s off-road models. It handles torque well and is less prone to failure compared to some lighter-duty automatics.

3. **Proven Suspension & Drivetrain** The XJ Cherokee s suspension (with coil springs, not air) and 4WD system (Trac-Lok or Trac-Lok II) are solid for its class. The 4.0L s front-wheel-drive layout (with a transfer case) provides good balance between on-road comfort and off-road capability.

4. **Parts Availability** As a discontinued model, parts (especially engines, transmissions, and major components) are still widely available, though some aftermarket support has faded. Jeep dealers and online marketplaces (e.g., RockAuto, eBay) carry most needed components.

5. **Modding Potential** The 4.0L is a popular engine for tuning, with aftermarket support for turbocharging, fuel injection upgrades, and performance parts. The XJ platform also benefits from lift kits, skid plates, and suspension modifications.

6. **Lower Purchase Price** Compared to newer SUVs, a 2000-2004 Cherokee is significantly cheaper, making it an attractive option for budget-conscious buyers who want a capable 4WD vehicle.

7. **Simplicity Over Tech** Unlike modern vehicles with complex electronics, the XJ s mechanical systems (engine, transmission, 4WD) are easier to diagnose and repair without advanced tools.

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1. **Rust Issues** Many XJ Cherokees, especially those from wet climates, suffer from rust in the wheel wells, subframe, and floor pans. A thorough inspection of the undercarriage is critical before purchase.

- **Torque converter problems** (slipping, overheating).

- **Solenoid failures** (leading to rough shifting or no engagement).

- **Fluid leaks** (from the pan gasket or cooler lines).

Regular transmission fluid changes (every 60,000 miles) are essential to prevent premature failure.

- **Head gasket failures** (especially if overheated or run on low coolant).

- **Rod bearing wear** (common in high-mileage examples, often requiring a rebuild).

- **Valvetrain issues** (hydraulic lifter wear, valve float).

A pre-purchase compression test or engine inspection is highly recommended.

4. **Poor Fuel Economy** The 4.0L automatic (especially in 4WD) gets around **14-16 MPG highway** not great for daily driving. If fuel efficiency is a priority, consider a manual transmission model or a different platform.

5. **Outdated Safety & Comfort** The XJ lacks modern safety features (no stability control, basic airbags), and the interior is dated with poor sound insulation. Ride quality is firm, making it less comfortable for long highway trips.

6. **Electrical Gremlins** Like many older Jeeps, the XJ can have intermittent electrical issues (faulty sensors, wiring problems, or failing alternators). A thorough electrical system check is advised.

7. **Resale Value** The XJ Cherokee is not a high-demand vehicle, so resale value depreciates quickly. If you plan to sell later, you may not recoup much.

8. **Recall & Modification History** Some models may have unaddressed recalls (e.g., fuel pump, airbag, or 4WD system issues). Check the vehicle history report (Carfax/AutoCheck) for service records and modifications that could affect reliability.

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- **Inspect for Rust:** Look under the vehicle, around the wheel wells, and at the frame rails. Rust can compromise structural integrity.

- **Check Transmission Fluid:** Dark, burnt-smelling fluid indicates overheating or failure. The fluid should be clean and red.

- **Test Drive:** Listen for unusual noises (knocking from the engine, whining from the transmission), check 4WD engagement, and test braking.

- **Service History:** A well-documented vehicle with regular oil changes, transmission fluid changes, and timing belt replacement (if applicable) is a better investment.

- **Budget for Repairs:** Be prepared for potential engine, transmission, or suspension repairs. A rebuild budget of **$2,000 $5,000** for major components is reasonable.

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The **2000-2004 Jeep Cherokee 4.0L 4WD with 42RE automatic** is a **capable, durable off-road vehicle** that can be a great buy if purchased carefully and maintained properly. It excels in rugged applications where reliability and simplicity are prioritized over modern comforts.

- Off-road enthusiasts who need a tough, affordable 4WD vehicle.

- Buyers who are mechanically inclined and willing to invest in maintenance.

- Those who want a platform for modifications (turbocharging, suspension upgrades).

- Daily commuters who prioritize fuel efficiency and low maintenance.

- Buyers who want a vehicle with modern safety features or a comfortable ride.

- Those unwilling to perform regular inspections or repairs.

If you find a **well-maintained example** (with clean service records, no major rust, and a healthy transmission), this Cherokee can be a **fantastic off-road workhorse**. However, if you re not prepared for potential engine or transmission issues, consider a **newer Jeep (e.g., Wrangler JL or Grand Cherokee)** or a **used Subaru Forester/Toyota RAV4** for a more hassle-free experience.

1. **Get a Pre-Purchase Inspection (PPI)** from a trusted mechanic.

2. **Verify fluid levels and condition** (engine oil, transmission fluid, coolant).

3. **Check for rust and structural damage.**

4. **Test the 4WD system and transmission shifts.**

5. **Budget for potential repairs** (especially if the vehicle has high miles).

If all checks out, this Cherokee can be a **great long-term investment** for the right buyer. If not, look elsewhere.

Details:

Standard Shipping. GNDCHE 03-04 AT, 4.0L 42RE, 4x4. LOCAL PICK-UP: Local Pick-Up is FREE. Message or call us for pricing and availability.

If you would like to make. Model: Jeep Grand Cherokee. GNDCHE 00-02 AT, 6 cylinder 4.0L, 42RE, 4x4. Item is an OEM part and may have visible wear from normal use.

part #: tra-3603 prices

• $185.00-$855.00

specifications autotransmissionsgo:

• for models: 4wd, Cherokee, Grand
• for makes: Jeep
• for years: 2000-2004
• type: Automatic Transmission
• ipn: Tra-3603

offer autotransmissionsgo:

• sold: 0
• availability: In Stock
• started: June 9, 2026
• quantity: 1
• best offers: True
• options: Ship-to-home

payments autotransmissionsgo:

• other
• credit card: Visa
• wallet: Google-pay

seller autotransmissionsgo:

• rating: 99.7%
• city: Harrisburg, Pennsylvania
• # reviews: 37744

shipping autotransmissionsgo:

• class: Freight
• service: Flat Rate Freight
• type: Fixed
• cost: $249.99

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

returns autotransmissionsgo:

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

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