FORD 394791 Door Rear Drive Shaft Sport Trac 5023 Exc.

( Manufacturer Part Number: 394791 ), ( Model: EXPLORER ), ( Warranty: 90 Day ), ( Genuine Oem: Yes ), ( Interchange Item Code: 431 ), ( Color: Silver ), ( Type: Drive Shaft ), ( Partout Id: A-125082819 )

Review FORD Door At Rear Drive Shaft Exc. Sport Trac fits EXPLORER 4X4 2004–2005

The **Ford 394791 2004-2005 Explorer Door 4x4 5023 Rear Drive Shaft (Exc Sport Trac)** is a high-performance, direct-fit replacement component designed specifically for Ford s iconic SUV lineup, ensuring seamless integration with the **2004 and 2005 model-year Explorer** equipped with the **Door 4x4** configuration and the **5023 transfer case**. This drive shaft is engineered to deliver reliable power transfer from the transfer case to the rear axle, maintaining optimal traction and performance in both on-road and off-road conditions. Crafted from durable, high-grade materials, including precision-machined steel tubing and reinforced CV (constant velocity) joints, this drive shaft is built to withstand the demands of heavy-duty driving, frequent shifting, and the added stress of the **Exc Sport Trac** system, which enhances off-road capability by locking the rear axle for improved grip and control. The design incorporates a **sleeve-type yoke** on the transfer case end and a **flanged yoke** on the axle end, ensuring a secure and precise connection that minimizes vibration and wear over time. Whether navigating rough terrain, towing heavy loads, or simply commuting in challenging weather, this drive shaft provides the robustness and efficiency needed to keep your Explorer running smoothly. Its compatibility with the **5023 transfer case** commonly found in the **4.6L V8** or **5.4L Triton V8** configurations makes it an essential upgrade or replacement part for owners seeking to restore or enhance their vehicle s drivetrain integrity. With its robust construction and direct-fit design, this drive shaft is a trusted solution for maintaining the performance and longevity of your Ford Explorer s 4x4 system.

### **Pros and Cons of Buying a 2004-2005 Ford Explorer (4.6L V8, 4x4, EX Sport Trac, Rear Drive Shaft)**

#### **Pros**

1. **Reliability and Durability** The 4.6L Triton V8 engine in the 2004-2005 Explorer is known for being robust and capable of handling heavy loads, making it a solid choice for towing and off-roading. With proper maintenance, many of these engines last well beyond 200,000 miles.

2. **Strong Towing and Hauling Capacity** The EX Sport Trac trim was designed with towing in mind, featuring a reinforced frame, upgraded suspension, and a higher payload capacity compared to standard Explorers. The rear drive shaft setup (instead of an AWD system) simplifies drivetrain complexity, which can improve reliability in some cases.

3. **Off-Road Capability** The 4x4 system with Sport Trac (a more aggressive off-road package) provides better traction and articulation than standard AWD models. The rear drive shaft also allows for better weight distribution when carrying heavy loads or towing.

4. **Availability of Parts and Service** As a Ford from the mid-2000s, parts are still relatively easy to find, and mechanics familiar with the platform are common. The 4.6L engine is widely serviced, and common issues (like timing chain stretch) have well-documented fixes.

5. **Comfortable and Spacious Interior** The Explorer s interior remains roomy and well-appointed for its class, with a comfortable ride on pavement. The EX Sport Trac often includes features like leather seats, power adjustments, and upgraded audio, adding to its value.

6. **Potential for Modifications** The 4.6L engine can be tuned for better performance, and the 4x4 system allows for aftermarket lift kits, skid plates, and other off-road upgrades. The rear-drive setup also makes it easier to modify for serious off-roading compared to AWD models.

7. **Lower Cost Than New or Modern SUVs** Compared to buying a new or even a used luxury SUV, the Explorer from this era offers significant value for the money, especially if well-maintained.

---

#### **Cons**

1. **Engine and Transmission Issues**

- The 4.6L Triton V8 is prone to **timing chain stretch**, which can lead to rattling noises and potential engine damage if ignored. Regular chain inspection and replacement (around 100,000 miles) is recommended.

- The **4R100 automatic transmission** (common in this era) can develop **slipping, rough shifting, or solenoid failures**, especially if fluid changes were neglected. A transmission rebuild or replacement may be needed if it s already failing.

- **Valvetronic throttle control** (electronic throttle) can fail, causing stalling or poor acceleration. This is often an easy fix with a new throttle body or ECU reprogramming.

2. **Fuel Economy** The 4.6L V8 is thirsty, especially in a larger SUV like the Explorer. Expect around **12-15 MPG combined**, which is poor compared to modern hybrids or smaller SUVs.

3. **Rust Concerns** Many Explorers from this era (especially those driven in snowy or salted regions) suffer from **frame and undercarriage rust**. A thorough inspection of the frame rails, subframe, and wheel wells is critical before purchase.

4. **Suspension Wear** The **rear live axle** (in 4x4 models) can develop **worn bushings, axle wraps, or differential leaks**, leading to clunking noises or handling issues. The **front coilovers** may also need replacement if the vehicle has seen heavy use.

5. **Electrical Gremlins** Like many Ford SUVs from this era, the Explorer can have **intermittent electrical issues**, such as faulty window regulators, power seat failures, or infotainment glitches. The **2004-2005 models** were transitioning to newer electronics, so some quirks are expected.

6. **Resale Value** The Explorer s resale value has declined over time, and the 4x4 models (especially Sport Trac) are less desirable than newer or more fuel-efficient SUVs. If you plan to sell later, this may be a consideration.

7. **Safety Ratings** While not terrible, the 2004-2005 Explorer does not meet modern safety standards. It lacks **standard stability control, side airbags (in some trims), or advanced crash avoidance tech**. If safety is a priority, a newer model with these features may be preferable.

8. **Maintenance Costs** While parts are available, labor costs can add up, especially if major components like the transmission, differentials, or suspension need work. Keeping up with **fluid changes (transmission, differential, transfer case, coolant)** is essential to avoid costly repairs.

---

### **Ending Conclusion**

The **2004-2005 Ford Explorer (4.6L V8, 4x4, EX Sport Trac, rear drive shaft)** is a **capable, durable workhorse** that excels in towing, hauling, and off-roading. It offers **reliability, space, and a strong engine** that can handle heavy loads if properly maintained. However, it comes with **notable drawbacks**, including **potential engine and transmission issues, poor fuel economy, rust concerns, and outdated safety features**.

- Need a **towing/hauling vehicle** for work or recreational use.

- Are **willing to invest in maintenance** (timing chain, transmission fluid, rust repairs).

- Prefer a **larger, more traditional SUV** over modern crossovers.

- Can **afford higher fuel costs** and potential repair expenses.

- Prioritize **fuel efficiency** or **low maintenance**.

- Want **modern safety features** or a **luxury SUV experience**.

- Are looking for a **long-term, low-cost vehicle** without significant upkeep.

---

### **Recommendation**

If you **find a well-documented, low-mileage example** (under 150,000 miles) with **proper maintenance records** (timing chain replacement, transmission fluid changes, rust treatment), this Explorer can be a **great purchase** for the right buyer. **Prioritize the following before buying:**

1. **Inspect the timing chain** Listen for rattling under acceleration; replace if stretched.

2. **Check the transmission** Test for smooth shifting; consider a fluid change or rebuild if needed.

3. **Look for rust** Examine the frame, subframe, and wheel wells thoroughly.

4. **Test the 4x4 system** Ensure it engages properly and doesn t leak from the transfer case or axles.

5. **Verify electrical systems** Test windows, seats, and infotainment for proper function.

6. **Get a pre-purchase inspection** A mechanic familiar with Ford SUVs should check for hidden issues.

**If you can afford it, consider a newer model** (2010 ) for better fuel economy, safety, and reliability, but if you need a **towing/off-roading beast** and are prepared for maintenance, the **2004-2005 Explorer Sport Trac 4x4** remains a **solid choice**.

Details:

All parts are covered by warranty. V8 GAS SOH C Naturally Aspirated. Good used OEM rear drive shaft. Unless specified as Universal this is a direct fit Drive Shaft.

Measurements: 53 x 5 inch diameter. Sport Trac 4X4. This part fits vehicles made in the following years 2002 ,2003, 2004, 2005 ,2006,2007,2008,2009,2010. Parts go back into cars rather than landfill.

Every part is cleaned, tested and inspected by experts. Original parts mean a perfect fit.

part #: 394791 prices

• $204.02-$289.95

specifications universajoin:

• for models: 4x4, Explorer
• for makes: Ford
• for years: 2004-2005
• mpn: 394791
• model: Explorer
• warranty: 90 Day
• genuine oem: Yes
• interchange item code: 431
• color: Silver
• type: Drive Shaft
• partout id: A-125082819

seller universajoin:

• city: Grants Pass, Oregon
• rating: 100.0%
• # reviews: 858

returns universajoin:

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

shipping universajoin:

• cost: $0.00
• type: Fixed
• transit: 3-8 Days
• service: UPS Ground
• class: Standard
• carrier: UPS

payments universajoin:

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

offer universajoin:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• best offers: True
• started: April 28, 2026
• quantity: 1

general universajoin:

• Transmission Drivetrain > Driveshafts Parts > Driveshafts
• condition: Used

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