1. Throttle Body For Sale
  2. sku: 11742127005221871
  3. LINCOLN 337-5298

LINCOLN 337-5298 Dohc Engine Throttle Body Valve Unit Front 5.4LITER

fits model: Navigator. make: Lincoln. year: 1999–2002.

337-5298 Lincoln 99-02 Navigator 5.4liter Dohc Engine Throttle Body Valve Unit Front Oem

( Type: Throttle Body ), ( Country Of Origin: United States ), ( Manufacturer Warranty: 30 Day ), ( Ipn: 337-5298 )

Review LINCOLN 5.4liter Dohc Engine Throttle Body Valve Unit Front Oem fits NAVIGATOR 1999–2002

The **Lincoln Navigator 2009 2002 (337-5298) 5.4L DOHC Engine Throttle Body Valve Unit (Front)** is a precision-engineered component designed to regulate airflow into the intake manifold of the vehicle s high-performance V8 engine, ensuring optimal throttle response and fuel efficiency. This throttle body valve unit is specifically tailored for the **5.4L DOHC (Dual Overhead Camshaft) Triton V8** found in the **2009 2002 Lincoln Navigator**, a model known for its blend of luxury and robust performance. Crafted from high-quality materials, including durable plastic and precision-machined metal components, this throttle body is built to withstand the demands of daily driving while maintaining smooth operation. The unit features a **drive-by-wire (DBW) system**, which allows for electronic control of throttle position, enhancing engine responsiveness and fuel economy. The front throttle body valve unit is strategically positioned to work in tandem with the engine s intake system, ensuring consistent airflow even under varying driving conditions. Whether used for maintenance, replacement, or performance upgrades, this throttle body valve unit is a critical part of keeping the Navigator s engine running at peak efficiency. Its compatibility with the **2009 2002 model years** ensures a seamless fit, while its robust construction guarantees longevity and reliability. For owners seeking to restore or enhance their Navigator s performance, this throttle body valve unit is an essential component that contributes to a smoother, more efficient driving experience.

### **Pros and Cons of Buying a Lincoln Navigator (1999-2002) with a 5.4L DOHC Engine and Throttle Body Valve Unit Issue**

#### **Pros**

1. **Spacious and Comfortable Interior**

The 1999-2002 Lincoln Navigator is a full-size SUV with a roomy cabin, comfortable seating for up to eight passengers, and high-quality materials for its time. The rear seats fold flat, providing additional cargo space, which is useful for families or those needing extra storage.

2. **Strong and Reliable 5.4L DOHC V8 Engine**

The 5.4L DOHC (Dual Overhead Camshaft) engine is a robust powerplant known for its durability and strong towing capacity. When properly maintained, it can last well beyond 200,000 miles, especially if the owner has kept up with oil changes and other basic upkeep. This engine is also compatible with modern fuel injectors and sensors, making modifications or repairs more straightforward than older designs.

3. **Good Towing and Hauling Capability**

With a towing rating around 6,000 7,000 lbs (depending on the model year and configuration), this SUV is well-suited for heavy-duty tasks like towing trailers, boats, or large equipment. This makes it a practical choice for those who need a vehicle for work or outdoor activities.

4. **Luxury Brand Reputation**

As a Lincoln, the Navigator comes with the brand s reputation for comfort, refinement, and upscale features. The interior includes power-adjustable seats, leather upholstery, air conditioning, and a sound system that was considered premium for its era. The driving experience is smooth, and the vehicle handles well for its size.

5. **Potential for Modifications and Upgrades**

The 5.4L DOHC engine is a popular choice among enthusiasts for tuning and modifications. Aftermarket support is available for performance upgrades, such as cold air intakes, exhaust systems, or even engine swaps (e.g., replacing it with a more modern V8). The throttle body valve unit issue can sometimes be addressed with aftermarket parts or simple repairs, making it a more manageable problem than some other engine faults.

6. **Availability of Parts and Mechanics**

While newer vehicles may have more specialized parts, the 1999-2002 Navigator still has a decent supply of aftermarket and OEM parts. Many mechanics, especially those familiar with Ford/Lincoln vehicles from this era, can work on it. Online forums and communities (e.g., Ford Truck Enthusiasts, Navigator-specific groups) provide resources for troubleshooting and repairs.

7. **Potential for Resale Value (If Well-Maintained)**

While not a high-value classic, a well-documented and restored Navigator can still hold some resale value, especially if it has been kept in good condition. Some buyers may appreciate the rarity of a fully restored example from this generation.

---

#### **Cons**

1. **Throttle Body Valve Unit (TBV) Issues**

The most significant drawback of this vehicle is the throttle body valve unit, which can fail over time. The TBV is responsible for controlling airflow to the engine and can become stuck open or closed, leading to:

- **Poor acceleration or hesitation** when pressing the gas pedal.

- **Rough idling or stalling**, especially at low speeds or during cold starts.

- **Check engine lights** due to misfires or air/fuel ratio issues.

- **Reduced fuel efficiency** as the engine struggles to maintain optimal airflow.

The TBV is a relatively simple part to replace (often costing $100 $300 for parts and labor), but it can fail again if the underlying cause (e.g., carbon buildup, electrical issues, or vacuum leaks) isn t addressed. Some owners report needing to replace it multiple times over the vehicle s lifespan.

2. **Aging Transmission (4R70W Automatic)**

The 4-speed automatic transmission (4R70W) in these Navigators is known for being durable but can develop issues over time, such as:

- **Slipping gears**, especially under heavy loads or when towing.

- **Delayed engagement** when shifting from park to drive.

- **Fluid leaks** from the transmission pan or cooler lines.

- **Burning smell** from overheating transmission fluid.

While not as common as the TBV issue, transmission problems can be costly to repair, often requiring a fluid flush, seal replacements, or even a full rebuild.

3. **Electrical and Sensor Problems**

Like many vehicles from the late 1990s and early 2000s, the Navigator can suffer from electrical gremlins, including:

- **Faulty sensors** (e.g., mass airflow sensor, oxygen sensors, or throttle position sensor) triggering check engine lights.

- **Intermittent power window or seat motor failures**.

- **Infotainment system glitches** (if equipped with a CD player or early navigation systems).

These issues are often minor but can be frustrating to diagnose and repair.

4. **Fuel Economy**

The 5.4L V8 is not known for its efficiency. Expect around **12 15 MPG in the city and 16 18 MPG on the highway**, which is poor compared to modern vehicles. High fuel consumption can add up to significant costs over time, especially if the vehicle is used frequently for long trips.

5. **Maintenance and Wear-and-Tear Costs**

As a vehicle from this era, the Navigator will require regular maintenance to stay reliable. Common upkeep includes:

- **Suspension repairs** (shocks, struts, bushings) due to age and heavy use.

- **Brake system updates** (pads, rotors, calipers) as the original components wear out.

- **Exhaust system leaks** or rusted components.

- **Coolant system checks** to prevent overheating.

Ignoring these issues can lead to more expensive repairs down the line.

6. **Safety and Modern Standards**

The Navigator lacks modern safety features such as:

- **Stability control**

- **Electronic stability control**

- **Advanced airbag systems** (e.g., side-impact airbags in all seats)

- **Modern crash-test ratings** (older models may not meet today s safety benchmarks).

While the vehicle is safe by its era s standards, it may not meet the expectations of buyers prioritizing cutting-edge safety technology.

7. **Rust and Body Corrosion**

Depending on the vehicle s history, rust can be a concern, particularly in areas like the wheel wells, rocker panels, and undercarriage. A thorough inspection (or a history report from a trusted mechanic) is essential to avoid buying a vehicle with structural rust that could compromise safety or handling.

8. **Limited Modernization and Upgrades**

Unlike newer vehicles, the Navigator cannot easily integrate modern tech such as:

- **Bluetooth connectivity**

- **Apple CarPlay or Android Auto**

- **Advanced driver-assistance systems (ADAS)**

Any upgrades would require aftermarket solutions, which may not be as seamless or reliable as factory-installed features.

---

### **Ending Conclusion**

The 1999-2002 Lincoln Navigator with a 5.4L DOHC engine is a **capable, spacious, and comfortable SUV** that excels in towing and luxury for its time. Its **strong engine, roomy interior, and reputation for durability** make it an attractive option for buyers who prioritize practicality and comfort over modern technology. However, the **throttle body valve unit issue, transmission concerns, and aging components** can turn it into a **high-maintenance project** if not properly addressed.

For the right buyer someone who is **willing to invest time and money into repairs, enjoys working on classic vehicles, or needs a reliable workhorse for towing and hauling** this Navigator can be a rewarding purchase. On the other hand, **buyers seeking a hassle-free, low-maintenance vehicle with modern conveniences** may find it too outdated or problematic.

---

### **Recommendation**

**Buy the Lincoln Navigator (1999-2002, 5.4L DOHC) if:**

- You have **mechanical experience** or access to a **trusted mechanic** who can diagnose and repair the throttle body valve unit and other potential issues.

- You **prioritize space, towing capacity, and comfort** over fuel efficiency or modern tech.

- You are **prepared for ongoing maintenance costs** and willing to **budget for repairs** (e.g., transmission fluid changes, suspension work, electrical troubleshooting).

- You find a **well-documented vehicle** with **clear service records**, preferably one that has already had the TBV replaced or is in good running condition.

- You plan to **use it for occasional driving** rather than daily commuting, where reliability is critical.

**Avoid the Lincoln Navigator (1999-2002, 5.4L DOHC) if:**

- You **cannot afford or do not want to deal with mechanical issues**, especially the throttle body valve unit or transmission problems.

- You **need a fuel-efficient vehicle** or plan to drive it frequently for long distances.

- You **prioritize modern safety or tech features** (e

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specifications throobo:

  • for models: Navigator
  • for makes: Lincoln
  • for years: 1999-2002
  • type: Throttle Body
  • country of origin: United States
  • manufacturer warranty: 30 Day
  • ipn: 337-5298

offer throobo:

  • best offers: True
  • sold: 0
  • started: May 10, 2026
  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock

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  • city: Lumberton, New Jersey
  • # reviews: 9565
  • rating: 99.6%

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general throobo:

  • Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies
  • condition: Used

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for models: navigator, for makes: lincoln, for years: 1999-2002, type: throttle body, country of origin: united states, manufacturer warranty: 30 day,
manufacturer: lincoln, category: auto parts > car truck parts accessories > air fuel delivery > throttle bodies, sku: 11742127005221871,
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