NISSAN 21499-9LE1A Seal Radiator Left

( Manufacturer Part Number: 21499-9LE1A ), ( Part Type: Seal Radiator ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included ), ( Replaces Part Number: 214999le0a )

Review NISSAN Genuine Seal radiator Left hand

The **Nissan 21499-9LE1A Seal-Radiator (Left-Hand)** is a precision-engineered component designed to ensure optimal cooling performance and longevity for Nissan vehicles equipped with the **QR25DE** or **QR30DE** engine platforms, commonly found in models such as the **Maxima, Altima (2003 2007), Sentra (2006 2007), and 350Z**. This high-quality radiator seal is crafted from durable **polyurethane or silicone**, depending on the application, and is engineered to withstand extreme temperatures, pressure fluctuations, and prolonged exposure to engine coolant, oil, and road debris. The seal features a **tapered, interference-fit design** that creates a secure, leak-proof barrier between the radiator core and the radiator housing, preventing coolant loss and overheating critical factors in maintaining engine efficiency and preventing costly internal damage. Its **O-ring or gasket-style construction** ensures a snug, vibration-resistant seal that resists warping or degradation over time, even under the harsh conditions of high-performance driving or stop-and-go traffic. Compatible with **50/50 ethylene glycol-water coolant mixtures** and other common automotive antifreeze formulations, this seal is built to endure the thermal cycling and mechanical stress of daily use while minimizing the risk of coolant leaks at the radiator interface. Whether addressing a **failing O-ring, cracked gasket, or post-repair reinforcement**, this seal is a straightforward yet essential upgrade for restoring radiator integrity and ensuring reliable cooling system operation. For optimal results, it is recommended to pair this seal with a **radiator flush and coolant replacement** to remove contaminants and maximize its performance.

**Pros and Cons of buying a Nissan Part Number 21499-9LE1A (Seal Radiator Left-Hand)**

1. **OEM Quality** This is a genuine Nissan part, meaning it meets the manufacturer s specifications for fit, function, and durability. OEM parts are designed to match the original equipment, reducing the risk of compatibility issues.

2. **Reliability** Nissan s aftermarket and OEM parts are generally reliable, especially for critical components like radiator seals. A properly functioning seal prevents coolant leaks, which can cause overheating and engine damage.

3. **Warranty Coverage** If purchased from an authorized Nissan dealer or a reputable auto parts retailer, this part may come with a warranty (e.g., 12 months or more), providing peace of mind against premature failure.

4. **Easy Installation** Radiator seals are relatively straightforward to replace, especially if you have basic mechanical skills. The part is designed to fit directly into the radiator s left-hand side, reducing the need for modifications.

5. **Prevents Cooling System Failures** A failing radiator seal can lead to coolant loss, overheating, and potential engine damage. Replacing it proactively avoids costly repairs down the line.

6. **Compatibility** This part is specifically designed for Nissan vehicles, ensuring it fits without requiring alterations. Always verify compatibility with your vehicle s model and year before purchasing.

1. **Higher Cost Compared to Aftermarket Alternatives** OEM parts are typically more expensive than generic or aftermarket seals. For example, you might pay $50 $100 for this Nissan part, whereas a comparable aftermarket seal could cost $10 $30.

2. **Limited Availability Outside Dealerships** While available at Nissan dealerships and some auto parts stores (e.g., AutoZone, RockAuto), it may not be as widely stocked as generic parts, requiring advance ordering or special ordering.

3. **Potential Overkill for Minor Issues** If the seal failure is due to a minor issue (e.g., a small crack or wear), an aftermarket seal might suffice without the premium price of an OEM part.

4. **Installation Complexity for Non-Mechanics** While the seal itself is simple, removing the radiator or accessing the left-hand side may require draining coolant, removing hoses, or even the radiator itself. DIYers without experience may struggle, leading to additional labor costs if professional help is needed.

5. **Risk of Counterfeit Parts** Purchasing from untrusted sellers (e.g., third-party online marketplaces) could result in counterfeit or low-quality parts that fail prematurely. Always buy from authorized sources.

6. **Environmental and Disposal Concerns** Radiator seals contain materials that may require proper disposal. If you re not equipped to handle coolant disposal, this adds an extra step to the replacement process.

Buying the **Nissan 21499-9LE1A radiator seal (OEM)** is a strong choice if you prioritize **reliability, warranty coverage, and long-term performance**. The part is designed to fit perfectly and reduce the risk of leaks, which is critical for preventing engine damage. However, the **higher cost and limited availability** make it less ideal for budget-conscious buyers or those who prefer aftermarket options.

If your vehicle s cooling system is otherwise healthy and you re confident in your mechanical skills, an **aftermarket seal** could be a cost-effective alternative. But if you value Nissan s build quality, have a warranty concern, or are replacing a failed seal in a high-mileage vehicle, the OEM part is justified.

- You want the most reliable, long-lasting solution.

- You have a warranty concern or are replacing a seal that has already failed.

- You re comfortable paying a premium for peace of mind.

- You re purchasing from an **authorized Nissan dealer or a trusted auto parts retailer** (e.g., RockAuto, Amazon with verified sellers).

- You re on a tight budget and the seal is only slightly worn.

- You re confident in the aftermarket brand s reputation (e.g., Denso, ACDelco).

- You re replacing the seal as a preventive measure rather than due to an immediate failure.

- Always **drain the coolant system** before replacing the seal to avoid spills.

- Inspect the **radiator, hoses, and water pump** while the system is open address any other signs of wear.

- If unsure about installation, consult a mechanic or follow a **step-by-step guide** for your specific vehicle model.

- Check for **recalls or common issues** with your vehicle s cooling system to ensure this fix addresses the root cause.

Details:

Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Let's get your Nissan back on the road. Electrical parts are not returnable.

part #: 214999le1a prices

• $79.51-$79.83

specifications ocoosys:

• for makes: Nissan
• mpn: 21499-9le1a
• part type: Seal Radiator
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• parts included: Only Part Reference 0 On The Diagram Is Included
• replaces part number: 214999le0a

returns ocoosys:

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

general ocoosys:

• condition: New
• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

shipping ocoosys:

• cost: $8.75
• service: Standard
• transit: 5-9 Days
• class: Standard
• type: Fixed

seller ocoosys:

• city: Houston, Texas
• rating: 99.0%
• # reviews: 602

offer ocoosys:

• started: April 9, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 5

payments ocoosys:

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

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