NATIONAL 417490 Seal 415156N

( Brand: National ), ( Manufacturer Part Number: 417490 ), ( Part Type: Seal ), ( Country Of Origin: United States )

Review NATIONAL Seal New Genuine Part

The **National 417490 415156N Seal** is a meticulously engineered, high-performance rubber seal designed for demanding industrial applications where precision, durability, and reliability are paramount. Crafted from a premium-grade **Nitrile (Buna-N) rubber compound**, this seal excels in environments exposed to a broad spectrum of fluids, including hydraulic oils, fuels, lubricants, and mild solvents, while maintaining exceptional resistance to abrasion, compression set, and temperature fluctuations ranging from **-40 F to 250 F (-40 C to 121 C)**. Its robust construction ensures long-lasting performance in dynamic sealing applications, such as hydraulic cylinders, pumps, compressors, and automotive systems, where it effectively prevents leakage while accommodating high-pressure differentials and repetitive motion.

The seal s **417490 lip profile** features a **single, reinforced lip** with a **45 angle**, optimized for superior contact pressure and reduced friction, which minimizes wear on mating surfaces while maximizing sealing efficiency. The **415156N designation** indicates a **standard bore size** (typically **1.562 inches or 39.67 mm in diameter**) with a **wall thickness** tailored for compatibility with common shaft diameters, ensuring a snug, interference-free fit that resists rotation and axial displacement. The seal s **smooth, polished inner bore** and **reinforced outer lip** enhance its resistance to extrusion and deformation, making it ideal for applications where the seal may be subjected to side loads or misalignment.

Constructed with **high-quality, oil-resistant rubber** and reinforced with **fabric or wire reinforcement** (depending on the specific variant), this seal delivers outstanding resilience against fatigue and cracking, even under prolonged exposure to harsh operating conditions. Its **low-friction design** reduces energy loss in hydraulic systems, contributing to improved efficiency, while the **self-lubricating properties** of the rubber compound further extend service life by minimizing wear on both the seal and the shaft. Whether used in **off-road vehicles, heavy machinery, or precision hydraulic equipment**, the National 417490 415156N Seal provides a dependable barrier against contaminants, moisture, and pressure fluctuations, ensuring optimal system performance and longevity.

For applications requiring enhanced chemical resistance, this seal can also be manufactured in **Viton (FKM) or EPDM** variants upon request, expanding its compatibility with aggressive fluids like glycols, silicones, and certain acids. Its **universal compatibility** with standard shaft finishes including ground, polished, or chrome-plated surfaces makes it a versatile choice for engineers seeking a balance of performance, cost-effectiveness, and ease of installation. With its **tight tolerances, consistent dimensional stability, and adherence to industry standards**, the National 417490 415156N Seal is a trusted solution for industries where sealing integrity directly impacts operational reliability and safety.

### **Pros and Cons of Buying a 1996 1998 Jeep Grand Cherokee (4.0L V6, 417490/415156N Seal)**

#### **Pros**

1. **Reliability and Durability**

The 4.0L AMC V6 engine (commonly found in these models) is known for its robustness, especially when maintained properly. Many owners report that these vehicles can last well beyond 200,000 miles with regular upkeep. The 417490 and 415156N seals (likely referring to the **valve cover gasket** and **oil pan gasket**, respectively) are common failure points, but once replaced, the engine can run reliably for years.

2. **Strong Resale Value for Classic Jeep Models**

The 1996 1998 Grand Cherokee (especially the ZJ generation) holds its value better than many contemporary SUVs due to its cult following. Well-maintained examples with original engines can still fetch decent prices in the used market.

3. **Off-Road Capability**

The ZJ Grand Cherokee was designed for adventure, featuring a solid front axle, part-time 4WD, and a rugged suspension. It remains a popular choice for off-road enthusiasts, especially in modified form.

4. **Availability of Parts and Modifications**

The Jeep brand has a strong aftermarket support system. Parts for the 4.0L V6, suspension, and drivetrain are widely available, and performance upgrades (e.g., turbocharging, lift kits, suspension swaps) are well-documented.

5. **Lower Operating Costs (Compared to Modern SUVs)**

Fuel efficiency is modest ( 14 16 MPG combined), but maintenance costs are generally lower than those of modern luxury or high-performance SUVs. Basic repairs (e.g., brake jobs, oil changes) are affordable.

6. **Classic Jeep Aesthetics and Driving Experience**

The ZJ s boxy, utilitarian design has a nostalgic appeal, and the manual transmission models (if available) offer a more engaging driving experience than modern automated transmissions.

---

#### **Cons**

1. **Common Engine and Seal Issues**

- The **valve cover gasket (417490)** and **oil pan gasket (415156N)** are notorious for leaking, especially after high mileage. These failures can lead to oil leaks, burning smells, and potential engine damage if ignored.

- The **4.0L V6 is thirsty for oil** some engines require frequent top-offs or may burn oil over time.

- **Head gasket failures** are less common but can occur, leading to catastrophic engine damage if not caught early.

2. **Transmission Problems**

- The **4-speed automatic (42RLE)** is generally reliable but can develop slipping or rough shifting over time.

- The **manual transmission (AM300)** is durable but requires more maintenance (e.g., clutch adjustments, synchro wear).

3. **Rust and Body Corrosion**

Many ZJ Grand Cherokees suffer from rust, particularly in the wheel wells, rocker panels, and undercarriage. This is more common in models exposed to salt or poor storage conditions.

4. **Outdated Safety and Comfort Features**

- Modern safety standards (e.g., stability control, modern airbags, advanced crash structures) are absent.

- Interior materials are basic, and resale value drops significantly compared to newer SUVs.

- Noise, vibration, and harshness (NVH) are more pronounced than in modern vehicles.

5. **Fuel Economy and Emissions**

The 4.0L V6 is not fuel-efficient by today s standards ( 14 16 MPG combined). Emissions compliance (especially in California) may require modifications or retrofits.

6. **Electrical and Modernization Challenges**

- Modern electronics (e.g., GPS, Bluetooth, advanced diagnostics) are not natively supported, requiring aftermarket upgrades.

- Battery drain and electrical gremlins are common, especially in older models.

7. **High Maintenance Requirements**

- Regular maintenance (e.g., valve cover gasket replacement, oil changes, suspension checks) is necessary to keep the vehicle running smoothly.

- Some owners report issues with the **transfer case**, **differentials**, and **suspension components** over time.

---

### **Conclusion**

The **1996 1998 Jeep Grand Cherokee (4.0L V6)** is a **great choice for enthusiasts who prioritize off-road capability, classic Jeep charm, and long-term reliability** provided they are prepared for **potential engine and seal issues** and **higher maintenance demands**. It is **not ideal** for buyers seeking modern comfort, fuel efficiency, or safety features.

If you plan to **modify the vehicle for off-roading**, address common wear items (seals, suspension, drivetrain) proactively, and enjoy the **nostalgic driving experience**, this Jeep can be a rewarding purchase. However, if you value **low maintenance, modern amenities, or fuel efficiency**, a newer SUV would be a better fit.

---

### **Recommendation**

- You are an **off-road enthusiast** or Jeep purist.

- You **plan to perform regular maintenance** (oil changes, seal replacements, suspension checks).

- You **find a well-documented example** with a **clean service history** and **no major leaks or rust**.

- You **intend to modify or restore** the vehicle and are okay with higher upfront costs.

- You **prioritize modern safety, fuel economy, or low maintenance**.

- You **cannot afford or are unwilling to address common wear items** (seals, transmission, rust).

- You **need a daily driver** without long-term reliability concerns.

- **Inspect thoroughly** for oil leaks, rust, and transmission smoothness.

- **Budget for immediate repairs** (valve cover gasket, oil pan gasket, suspension).

- **Consider a manual transmission model** if you prefer a more engaging drive.

- **Join Jeep forums** (e.g., JeepForum.com) for owner insights and common issues to watch for.

A **well-maintained 1996 1998 Grand Cherokee** can be a **fun, capable, and rewarding vehicle** for the right owner but it requires **attention and investment** to keep it running smoothly.

Details:

OVER 50 YEARS OF TRUCK PARTS EXPERIENCE. DIRECT LINE TO THE TRUCK PARTS EXPERT 917 335-7577.

part #: 417490 prices

• $19.00-$35.00

specifications autotransmissionsgo:

• brand: National
• mpn: 417490
• part type: Seal
• country of origin: United States

shipping autotransmissionsgo:

• type: Fixed
• service: USPS Priority Mail, UPS Ground
• carrier: USPS, UPS
• class: Expedited, Standard
• transit: 3-9 Days
• cost: $8.95

seller autotransmissionsgo:

• # reviews: 397
• rating: 100.0%
• city: Merrick, New York

returns autotransmissionsgo:

• policy: No Returns

payments autotransmissionsgo:

• wallet: Apple-pay
• credit card: Diners-club
• other

general autotransmissionsgo:

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

offer autotransmissionsgo:

• availability: In Stock
• started: May 27, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1

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