NISSAN 21440-7S000 Radiator Drain Plug

( Manufacturer Part Number: 21440-7S000 ), ( Part Type: Radiator Plug ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Year: 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included )

Review NISSAN Genuine Radiator Drain Plug fits 2004–2015

The **Nissan 21440-7S000 Radiator Drain Plug** is a precision-engineered, high-quality replacement part designed specifically for Nissan vehicles equipped with the original equipment (OEM) cooling system. This drain plug plays a critical role in maintaining the integrity of the radiator and cooling system by providing a reliable means to release coolant during maintenance procedures such as flushing, repairs, or fluid changes. Crafted from durable, corrosion-resistant materials, this plug is built to withstand the thermal and hydraulic stresses of automotive cooling systems, ensuring long-term performance and preventing leaks that could compromise engine efficiency or lead to overheating. The design features a secure, threaded connection that ensures a tight seal when properly installed, minimizing the risk of coolant spills or system contamination. Whether used in high-performance applications or everyday driving scenarios, this plug adheres to Nissan s strict engineering standards, offering compatibility with a range of models, including those from the Altima, Sentra, Maxima, and other popular Nissan vehicles. Its straightforward yet robust construction makes it an essential component for any mechanic or DIY enthusiast performing routine cooling system maintenance, ensuring optimal functionality and reliability for years to come.

**Pros and Cons of buying a Nissan 21440-7S000 Radiator Drain Plug**

1. **Direct Fitment** This part is specifically designed for Nissan vehicles, ensuring compatibility with your engine bay s drain system. It eliminates the need for modifications or adapters, reducing installation complexity.

2. **Quality and Durability** Nissan s OEM (Original Equipment Manufacturer) parts are engineered to meet strict manufacturing standards, which often translates to better longevity and performance compared to aftermarket alternatives. The drain plug is built to withstand repeated use without leaking or seizing.

3. **Reliability** Since it s a genuine Nissan part, it s less likely to fail prematurely or cause secondary issues (e.g., coolant leaks, overheating) that could arise from inferior aftermarket copies. This can save you time and money on repairs down the line.

4. **Ease of Installation** The design is straightforward, and it typically requires only basic tools (like a wrench or socket set) to install or remove. No specialized equipment or expertise is usually needed, making it a DIY-friendly replacement.

5. **Warranty Coverage** If purchased from an authorized Nissan dealer or a reputable seller, the part may come with a warranty, offering peace of mind in case of defects. Aftermarket parts often lack such guarantees.

6. **Prevents Coolant Loss** A properly functioning drain plug ensures your cooling system retains coolant efficiently, which is critical for engine temperature regulation and preventing overheating.

7. **Standardized Design** The part is consistent with what was originally installed in your vehicle, meaning it won t introduce compatibility issues with other components like hoses, clamps, or the radiator itself.

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1. **Higher Cost** Genuine Nissan parts are typically more expensive than aftermarket alternatives. The price may be a deterrent if you re on a tight budget, especially if the part is only needed for routine maintenance.

2. **Limited Availability** Depending on where you live, finding this exact part (especially if it s older or discontinued) might require ordering online or visiting a specialized auto parts store. This could involve shipping delays or higher fees.

3. **Potential for Counterfeit Parts** If buying from untrusted sellers (e.g., third-party online marketplaces), there s a risk of receiving a fake or substandard part. Always verify the seller s reputation and authenticity of the part number.

4. **Overkill for Minor Repairs** If the drain plug is only slightly damaged (e.g., a minor leak or corrosion), replacing it with a new OEM part might feel excessive. In such cases, an aftermarket part or even a simple repair (like sealing the threads) could suffice.

5. **Environmental and Ethical Concerns** Purchasing new OEM parts contributes to e-waste and resource consumption. If you re environmentally conscious, you might consider refurbished or salvaged parts instead, though these may not always be as reliable.

6. **Time-Consuming Purchase Process** Finding the exact part number and ensuring it s the correct version for your vehicle model and year can take time, especially if you re not familiar with Nissan s part numbering system.

7. **No Customization Options** Unlike some aftermarket parts, the OEM drain plug doesn t offer variations in material, size, or design. If you re looking for something more robust (e.g., stainless steel) or with additional features, you ll need to explore alternatives.

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The Nissan 21440-7S000 radiator drain plug is a high-quality, reliable choice for maintaining your vehicle s cooling system. Its direct fitment, durability, and compatibility with Nissan s design standards make it a strong option if you prioritize performance and longevity. However, the higher cost and potential availability issues may outweigh the benefits for some buyers, particularly those on a budget or looking for quick, low-cost replacements.

For most drivers, the peace of mind and reliability of an OEM part justify the investment, especially if the drain plug is part of a larger cooling system overhaul or if you re unsure about aftermarket alternatives. If you re confident in your ability to source a high-quality aftermarket part (e.g., from a reputable brand like ACDelco or Bosch), those options could offer a cost-effective alternative without sacrificing too much in terms of quality.

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- You value genuine OEM quality and want to avoid potential compatibility or reliability issues.

- You re replacing the part as part of a larger cooling system service or if the original is severely damaged.

- You have access to an authorized Nissan dealer or a trusted online retailer (e.g., RockAuto, Amazon with verified sellers) to ensure authenticity.

- Budget is not a major concern, and you want to minimize long-term risks like leaks or overheating.

- You re working with a tight budget and can verify the aftermarket part s quality (look for brands with good reviews and warranties).

- The drain plug is only slightly damaged, and you re comfortable with a simpler fix (e.g., sealing threads or using a temporary solution).

- You re confident in your ability to research and select a reputable aftermarket part that meets or exceeds OEM standards.

- Always check the part number against your vehicle s specific model and year to avoid mismatches.

- Inspect the drain plug for signs of wear or damage before purchasing some sellers may offer used or refurbished options at a discount.

- If possible, purchase from a seller that offers a return policy or warranty in case the part doesn t fit or fails.

- Pair the replacement with a thorough inspection of your cooling system (hoses, clamps, radiator) to address any underlying issues.

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. Electrical parts are not returnable. So, why would you choose anyone else.

2 Day Shipping applies only to the USA 50 states.

part #: 214407s000 prices

• $16.56-$25.61

specifications ocoosys:

• for makes: Nissan
• for years: 2004-2015
• mpn: 21440-7s000
• part type: Radiator Plug
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• year: 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
• parts included: Only Part Reference 0 On The Diagram Is Included

general ocoosys:

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

offer ocoosys:

• sold: 0
• options: Ship-to-home
• quantity: 1
• started: April 28, 2026
• availability: In Stock

payments ocoosys:

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

returns ocoosys:

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

seller ocoosys:

• city: Surprise, Arizona
• # reviews: 4046
• rating: 99.8%

shipping ocoosys:

• transit: 3-7 Days
• cost: $9.99
• class: Standard
• service: Standard
• type: Fixed

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