JAGUAR NNA5908PD Fuel Gas Tank Reservoir X300 4.0 N/a

( Manufacturer Part Number: NNA5908PD ), ( Type: Fuel Tank ), ( Oe/oem Part Number: Nna5908pd / Nna 5908 Pd / Nna-5908-pd ), ( Placement On Vehicle: Rear ), ( Country Of Origin: United Kingdom )

Review JAGUAR 4.0 Fuel Gas Tank Reservoir Assembly Oem fits XJ6 1995–1997

The **Jaguar NNA5908PD** is a meticulously engineered, high-performance fuel tank reservoir designed exclusively for the **1995 1997 Jaguar XJ6 (X300) and X300-based XJ8 models**, specifically tailored for the **4.0-liter naturally aspirated (N/A) engine configuration**. This premium component is crafted to deliver uncompromising reliability, enhanced fuel efficiency, and superior performance while maintaining the iconic elegance and engineering precision synonymous with Jaguar s legacy. The reservoir is constructed from **high-grade, corrosion-resistant materials**, ensuring longevity even under the most demanding driving conditions, including exposure to harsh climates, road salt, and prolonged exposure to moisture. Its **precision-molded design** eliminates common issues such as fuel sloshing, vapor lock, and air pocket formation, which can disrupt engine performance and fuel delivery particularly critical for the XJ6 s thirsty yet refined 4.0-liter inline-six, known for its smooth yet powerful output. The reservoir features a **robust, leak-proof sealing system** with O-rings and gaskets engineered to withstand the pressures of modern fuel systems, reducing the risk of spills and maintaining a clean, contamination-free fuel supply. For enthusiasts and restorers seeking to preserve or restore their Jaguar s original performance, this reservoir serves as an ideal upgrade, offering a direct replacement that adheres to OEM specifications while incorporating modern refinements. Whether installed in a classic show car, a high-mileage daily driver, or a meticulously maintained collector s vehicle, the **NNA5908PD** ensures that the 4.0-liter N/A engine receives the consistent, high-quality fuel flow it demands, contributing to smoother acceleration, improved throttle response, and a more authentic driving experience. Its compatibility extends beyond mere function, as it also enhances the vehicle s aesthetic integrity when paired with matching fuel lines and fittings, allowing owners to maintain the XJ6 s timeless British sports sedan aesthetic without sacrificing performance.

### **Pros and Cons of Buying a Jaguar XJ6 (NA) 4.0L N/A Fuel Gas Tank Reservoir (1995-1997)**

#### **Pros**

1. **Classic Jaguar Character** The NA XJ6 (1995-1997) retains the iconic Jaguar driving experience, with a smooth, torquey 4.0L inline-six engine that offers engaging performance, especially in manual transmission models. The car s weight and suspension tuning provide a balanced, slightly understeer-prone handling style that many enthusiasts appreciate.

2. **Reliability of the NA Engine** The AJ6 4.0L engine (when properly maintained) is known for durability, particularly in N/A (naturally aspirated) form. With regular oil changes and attention to minor wear items (valve lifters, timing chain), it can easily exceed 200,000 miles. The fuel-injected system is more refined than earlier carbureted models.

3. **Aftermarket Support** The NA XJ6 has a strong aftermarket community, with readily available parts for performance upgrades (intake, exhaust, suspension), restoration, and maintenance. Tuning options (like Holley or Megajet fuel systems) can significantly improve power and drivability.

4. **Comfort and Practicality** The XJ6 is a spacious, comfortable grand tourer with a smooth ride, making it suitable for long-distance driving. The interior, while dated by modern standards, is functional and offers good visibility. The 4.0L engine provides adequate power for highway cruising without excessive noise.

5. **Potential for Restoration** If the car is in rough condition, it can be a rewarding project. Many parts (especially from later NA models) are still available, and the car s classic styling makes it a desirable project for enthusiasts.

6. **Fuel Gas Tank Reservoir Compatibility** The mention of a "fuel gas tank reservoir" suggests this car may have had a modified or aftermarket fuel system (possibly for gas-to-liquid conversion or fuel sloshing reduction). If this is a legitimate upgrade (rather than a sign of neglect), it could indicate the owner has taken some initiative in maintenance.

7. **Lower Cost of Ownership (Compared to Modern Jaguars)** Parts, labor, and insurance are significantly cheaper than for newer Jaguar models. The NA XJ6 is also less likely to be targeted by thieves compared to modern luxury cars.

---

#### **Cons**

- **Timing Chain & Tensioners** The chain can stretch over time, leading to timing issues. Replacement is expensive ( $1,500 ) and often recommended around 100,000 miles.

- **Valve Lifters** The hydraulic lifters can wear out, causing a rattling noise and potential valve float. Replacement is costly ( $1,200 $1,800).

- **Water Pump & Thermostat** These are often replaced as part of a timing chain service.

- **Suspension Wear** Bushings, shocks, and struts degrade over time, affecting ride quality and handling.

- **Fuel Pump Failure** The electric fuel pump can fail, leading to stalling or no-start conditions. Replacement is moderately expensive ( $300 $600 installed).

- **Fuel Lines & Connections** Rubber fuel lines can crack, and connections can leak over time.

- **The "Gas Tank Reservoir" Note** If this refers to a modified or aftermarket fuel tank (e.g., a gas-to-liquid conversion or a custom reservoir for sloshing reduction), it could indicate:

- A legitimate upgrade (e.g., for better fuel economy or reduced sloshing in rough terrain).

- A sign of past neglect (e.g., a leaky or poorly installed aftermarket tank).

- If the original tank is missing or damaged, replacement costs ( $500 $1,000) can be high.

- **Faulty Wiring Harnesses** Common in the XJ6, leading to intermittent issues with lights, gauges, or accessories.

- **Alternator & Battery Problems** Weak alternators or failing batteries are frequent complaints.

- **Computer & Sensor Failures** The engine management system can develop errors, requiring diagnostics and potential ECU resets or replacements.

4. **Maintenance Costs** While parts are cheap, labor costs can add up, especially for specialized Jaguar mechanics. Routine maintenance (oil changes, fluid flushes, suspension work) is necessary to keep the car running smoothly.

5. **Rust & Body Condition** Many NA XJ6s suffer from rust, particularly in the wheel arches, sills, and undercarriage. A thorough inspection is critical to avoid hidden repair costs.

6. **Resale Value & Market Demand** The NA XJ6 is not a highly sought-after classic like the E-Type or early XJs. While it has a dedicated following, it may not hold value as well as more desirable Jaguars or British classics.

7. **Driving Experience Limitations** The car s weight and suspension tuning make it less nimble than modern sports cars. The manual transmission models are fun to drive, but the automatic (if present) can feel sluggish compared to modern automatics.

8. **Environmental & Emissions Concerns** Older cars like this may not meet modern emissions standards, which could complicate registration or insurance in some regions.

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### **Ending Conclusion**

The **1995-1997 Jaguar XJ6 NA 4.0L N/A** is a capable, enjoyable classic car with a strong following among enthusiasts who appreciate its driving dynamics and mechanical simplicity. It offers a blend of comfort, performance, and aftermarket potential, making it a viable choice for those who prioritize driving pleasure over modern luxury.

However, **buying this car comes with significant responsibilities**. The NA engine is reliable but not bulletproof it demands regular maintenance, especially around the timing chain, lifters, and fuel system. The "fuel gas tank reservoir" note is a red flag unless it s a well-documented upgrade; if it s a sign of neglect (e.g., a missing or leaking tank), it could indicate deeper issues.

- Enthusiasts who enjoy restoring or maintaining classic cars.

- Drivers who prioritize a smooth, engaging manual transmission experience over modern tech.

- Those who can afford the occasional major repair (timing chain, lifters, suspension).

- Buyers who don t mind a project car with some rust or wear, as long as the engine and chassis are sound.

- Buyers who want a plug-and-play classic with minimal maintenance.

- Those who prefer modern safety, reliability, or luxury features.

- People who cannot commit to regular upkeep or mechanical attention.

---

### **Recommendation**

1. **Get a Pre-Purchase Inspection (PPI)** Hire a Jaguar specialist or a trusted mechanic to thoroughly inspect the engine, transmission, suspension, and fuel system. Pay special attention to:

- Timing chain stretch and condition.

- Valve lifter noise (listen for rattling at idle).

- Fuel pump operation (check for proper pressure and no leaks).

- Electrical system (test all gauges, lights, and sensors).

- Rust and structural integrity (especially the fuel tank area if the reservoir is aftermarket).

- Why it was installed (was the original tank leaking?).

- How long it has been in place (was it a temporary fix?).

- If the original tank is still available for a swap if needed.

Avoid buying a car with a questionable aftermarket fuel setup unless you re prepared to reverse it.

- Regular oil changes (synthetic oil is recommended).

- Fuel system checks (pump, lines, injectors).

- Suspension and bushings as needed.

- Potential timing chain/lifter replacement in the long term.

4. **Consider a Lower-Mileage Example** If possible, aim for a car with under 100,000 miles to reduce the likelihood of major wear items failing.

- Smoothness of acceleration (listen for engine noise or hesitation).

- Steering and suspension response (no excessive play or clunks).

- Transmission operation (if automatic, check for smooth shifts or delays).

This Jaguar is a **great choice for the right buyer** someone who appreciates classic car ownership, is prepared for maintenance, and doesn t mind a project. However, it is **not a set-and-forget purchase**. If you re willing to put in the work, it can be a rewarding and enjoyable car. If you re looking for a hassle-free classic, consider a more modern or lower-maintenance model.

Would you like guidance on specific maintenance intervals or common upgrade paths for

Details:

Please, do not purchase parts just to check and diagnose your vehicles problem. Original Jaguar part. All of the parts are tested either before or after removal from vehicle. Item may show light scuffs, scratches or other imperfections as a result of this being used part.

Large items include: hood, door shell, fender, engine, transmission, trunk hatch, windshield, bumper, reinforcement clip, sub frame, roof, quarter apron, gas tank, etc. Shipping cost or carrier may change, based on final destination.

part #: nna5908pd prices

• $180.23-$298.80

specifications fueltanksysteme:

• for models: Xj6
• for makes: Jaguar
• for years: 1995-1997
• mpn: Nna5908pd
• type: Fuel Tank
• oe/oem part number: Nna5908pd / Nna 5908 Pd / Nna-5908-pd
• placement on vehicle: Rear
• country of origin: United Kingdom

shipping fueltanksysteme:

• cost: $195.00
• class: Freight
• service: Flat Rate Freight
• type: Fixed

offer fueltanksysteme:

• started: March 20, 2026
• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• best offers: True

payments fueltanksysteme:

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

seller fueltanksysteme:

• city: Wills Point, Texas
• # reviews: 1986 7
• rating: 99.9%

general fueltanksysteme:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

returns fueltanksysteme:

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

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