fits model: 4x4, Re, Navigator. make: Lincoln. year: 2015.

( Manufacturer Part Number: FL144602BB ), ( Model: NAVIGATOR ), ( Warranty: 90 Day ), ( Genuine Oem: Yes ), ( Seller Notes: Quality, Oem, Recycled, Part, 1-year, 3-year, Warranties ), ( Interchange Item Code: 431 ), ( Color: Black ), ( Reference Oe/oem: Fl144602bb, Fl1z4602b ), ( Type: Drive Shaft )
The **Lincoln FL144602BB Rear Drive Shaft** is a precision-engineered, high-performance drivetrain component specifically designed for the **2015 Lincoln Navigator (131-wheelbase, 4x4 model)**, ensuring seamless power transfer from the transmission to the rear axle while maintaining optimal balance, durability, and reliability. Crafted from high-grade, heat-treated steel, this drive shaft is built to withstand the rigorous demands of heavy-duty towing, off-road adventures, and daily highway driving, delivering consistent performance even under extreme conditions. The shaft features a **sleek, aerodynamic design** with a **balanced counterweight system**, minimizing vibration and noise while enhancing ride comfort and handling precision. Its **robust universal joints (U-joints)** and **constant velocity (CV) joints** are engineered for smooth articulation, accommodating the dynamic movements of the vehicle s suspension and drivetrain, particularly in 4x4 applications where wheel travel and torque fluctuations are common. The **FL144602BB** is a **direct-fit replacement**, meticulously calibrated to match the original equipment specifications of the 2015 Navigator, ensuring compatibility with the vehicle s **6.2L V8 engine, 10-speed automatic transmission, and rear-wheel-drive or part-time 4WD systems**. Constructed with **corrosion-resistant coatings** and **sealed bearings**, this drive shaft is protected against rust, moisture, and abrasion, extending its lifespan and maintaining peak performance in all climates. Whether navigating rough terrain, hauling heavy loads, or cruising on the highway, this rear drive shaft ensures **efficient power delivery, reduced wear on drivetrain components, and a quiet, vibration-free driving experience**, making it an essential upgrade or replacement for owners seeking long-term reliability and performance.
### **Pros and Cons of Buying a 2015 Lincoln Navigator 4x4 (131" Wheelbase) Rear Drive Shaft (Part # FL144602BB)**
#### **Pros:**1. **Direct OEM Fitment** This is a genuine Lincoln/Nissan (Navara-based) part, ensuring proper fit, function, and compatibility with the 2015 Navigator 4x4. Aftermarket parts may not align perfectly, leading to driveline issues or premature wear.
2. **Reliability for a 4x4 System** The Navigator s 4x4 drivetrain relies on a robust rear driveshaft to handle torque distribution, especially in off-road or heavy-load conditions. A high-quality OEM part reduces the risk of sudden failure, which could strand you on the road.
3. **Durability** The part is built to withstand the stresses of a full-size SUV s drivetrain, including weight distribution and articulation in 4x4 mode. OEM components are typically designed for longevity compared to cheaper aftermarket alternatives.
4. **Ease of Installation** Since it s an original equipment part, mechanics familiar with the Navigator platform will likely have experience installing it. This reduces the chance of installation errors that could void warranties or cause damage.
5. **Warranty Coverage** If purchased from an authorized dealer or a reputable parts supplier, the part may come with a limited warranty, providing peace of mind against defects.
6. **Compatibility with Upgrades** If you plan to modify your Navigator (e.g., lift kits, off-road tires, or performance tuning), an OEM driveshaft ensures it can handle the increased loads without excessive strain.
7. **Resale Value** Keeping the vehicle stock or with original parts can help maintain its resale value, especially if you plan to sell it in the future.
---
#### **Cons:**1. **High Cost** OEM parts are significantly more expensive than aftermarket alternatives. The price of this driveshaft will likely range between **$800 $1,500 **, depending on the seller and whether it s new or used. This can be a substantial investment if the part fails due to normal wear or an unrelated drivetrain issue.
2. **Limited Availability** OEM parts for older Lincoln models (especially those based on the Nissan Navara platform) can be harder to find than newer vehicles. You may need to order it from a specialty dealer, which could delay repairs.
3. **Potential for Counterfeit Parts** Buying from untrusted sources (e.g., eBay, Craigslist, or unknown online marketplaces) risks receiving a fake or salvaged part. Always verify the seller s reputation and part authenticity.
4. **Labor Costs** Replacing a driveshaft requires specialized tools and mechanical skill. Labor costs for installation can range from **$300 $800 **, depending on the shop and location. DIY installation is possible but challenging due to the weight and complexity of the part.
5. **Wear and Tear Over Time** Even OEM parts degrade with mileage. If the driveshaft in your vehicle is already worn (e.g., visible cracks, excessive play, or fluid leaks), replacing it may not be a permanent fix underlying issues (e.g., worn U-joints, damaged yokes) could persist.
6. **Alternative Solutions** In some cases, repairing the existing driveshaft (e.g., replacing U-joints or greasing the joints) may be a more cost-effective option than a full replacement. A mechanic should assess whether the part is salvageable before recommending a new one.
7. **Potential for Overkill** If the driveshaft failure is isolated (e.g., a snapped yoke rather than general wear), replacing the entire shaft may be unnecessary. A targeted repair could save money.
---
### **Conclusion:** Buying the **Lincoln FL144602BB rear driveshaft (2015 Navigator 4x4, 131" WB)** is a **strong choice if:**- You need a **direct OEM replacement** for reliability and proper fit.
- Your vehicle has **significant mileage or off-road use**, making an OEM part a safer long-term investment.
- You re **replacing a failed or damaged driveshaft** and want to avoid compatibility issues.
- You have **access to a trusted mechanic** for proper installation.
However, it may **not be the best option if:**- The failure is **isolated to a small component** (e.g., a U-joint) that could be repaired more affordably.
- You re on a **tight budget** and aftermarket parts (from reputable brands like **Dana, Spicer, or Currie**) are a viable alternative.
- You re **not sure the part is needed** always have a mechanic diagnose the issue first to avoid unnecessary expenses.
---
### **Recommendation:**1. **Get a Professional Diagnosis First** Before purchasing, have a **trusted mechanic** inspect the driveshaft and surrounding components (U-joints, yokes, CV axles, and transfer case). They can confirm whether a full replacement is necessary or if a partial repair suffices.
2. **Compare Prices and Sources**
- Check **authorized Lincoln/Nissan dealers** for new OEM parts (most expensive but guaranteed).
- Look at **reputable online retailers** (e.g., **RockAuto, PartsGeek, or eBay with verified sellers**) for used OEM parts (often 30 50% cheaper).
- Consider **high-quality aftermarket brands** (e.g., **Dana 440, Spicer 1300, or Currie**) if the OEM part is significantly overpriced. Ensure they match your vehicle s specifications.
3. **Budget for Labor** Even if you buy the part cheaply, **installation costs add up**. Factor in **$300 $800 ** for professional labor, or research DIY options carefully.
4. **Consider a Warranty or Extended Coverage** If buying from a dealer, ask about **warranty options** that cover labor and parts. Some mechanics offer **limited warranties** on installations.
5. **Alternative Approach: Used vs. New**
- **New OEM:** Most reliable but expensive.
- **Used OEM (from a reputable source):** Cost-effective but riskier (check for damage).
- **Aftermarket (if compatible):** Can be cheaper but verify build quality and warranties.
6. **Document the Purchase** Keep receipts and proof of purchase in case of defects. If buying used, request maintenance records to ensure the part hasn t been abused.
---
### **Final Verdict:****If your driveshaft is failing and you need a reliable, long-term solution, the OEM part is the safest choice.** However, **prioritize a mechanic s diagnosis** to avoid overspending. If the part is **heavily worn or cracked**, the OEM replacement is justified. If the issue is minor (e.g., a snapped yoke), a **targeted repair may be smarter**.
For most **high-mileage or off-road-used Navigators**, the **OEM driveshaft is worth the investment** to prevent drivetrain failure, especially in 4x4 mode. Just **shop smart, verify the part s condition, and budget for installation costs**.
Th is part fits vehicles made in the following years 2015 ,2016,2017. Parts go back into cars rather than landfill. All parts are covered by warranty. Original parts mean a perfect fit.
Unless specified as Universal this is a direct fit Drive Shaft. 4X4 131 WB extended. Every part is cleaned, tested and inspected by experts.