NISSAN 21507-1AA0A Drain Plug Lower Insulator

( Manufacturer Part Number: 21507-1AA0A ), ( Part Type: Plug Insulator ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Year: 2011 2012 2013 2014 ), ( Parts Included: Only Part Reference 9 On The Diagram Is Included )

Review NISSAN Genuine Drain Plug Lower Insulator fits MURANO 2011–2014

The **Nissan 21507-1AA0A Drain Plug Lower Insulator** is a precision-engineered component designed specifically for Nissan vehicles equipped with the 3.5L V6 engine, commonly found in models such as the Altima, Maxima, Murano, and Pathfinder from the late 2000s through the early 2020s. This high-quality insulator serves as a critical thermal barrier between the engine s oil drain plug and the surrounding metal surfaces, preventing excessive heat transfer that could compromise the integrity of the drain plug over time. Crafted from durable, heat-resistant materials, this insulator ensures a secure and leak-free fit, maintaining optimal oil drainage efficiency while safeguarding against premature wear or failure of the drain plug itself. Its design incorporates a snug, interference-fit interface with the engine block, allowing for easy installation and removal without the need for specialized tools, though a socket wrench or breaker bar may be required to fully seat it in place. Beyond its functional role, this part plays a vital role in extending the lifespan of the oil pan gasket and preventing oil leaks, which can lead to costly engine damage if left unaddressed. Whether replacing a worn-out insulator during routine maintenance or addressing a persistent oil leak, this Nissan-specific component offers a reliable, long-lasting solution that adheres to strict OEM standards, ensuring seamless performance and peace of mind for both professional mechanics and DIY enthusiasts.

### **Pros and Cons of buying a Nissan 21507-1AA0A Drain Plug Lower Insulator**

The Nissan 21507-1AA0A drain plug lower insulator is a genuine OEM (Original Equipment Manufacturer) part designed specifically for Nissan vehicles. This means it is engineered to meet the exact specifications required for your engine, ensuring proper fitment and functionality.

1. **Guaranteed Fit and Compatibility** Since it is an OEM part, it is manufactured to match the original design, reducing the risk of installation issues or leaks. This is particularly important for parts like drain plugs, which must seal correctly to prevent oil or coolant leaks.

2. **High-Quality Materials** OEM parts are typically made from durable materials that meet strict quality standards, ensuring longevity and reliability. This can help prevent premature wear or failure, which is critical for maintaining engine health.

3. **Warranty Coverage** Purchasing from an authorized dealer or a reputable seller often includes a warranty, providing peace of mind in case the part fails due to manufacturing defects. This is especially valuable for parts that are difficult or expensive to replace.

4. **Reliability and Performance** Because it is designed for mass production, the part is thoroughly tested to ensure consistent performance. This reduces the likelihood of unexpected issues that can arise with aftermarket parts that may not have undergone the same rigorous testing.

5. **Ease of Installation** OEM parts are designed to integrate seamlessly with the vehicle s existing components, making installation straightforward for mechanics or DIY enthusiasts. This can save time and labor costs compared to aftermarket alternatives that may require additional modifications.

6. **Resale Value** If you decide to sell your vehicle in the future, having OEM parts installed can enhance its perceived value, as buyers often prefer vehicles with original or high-quality aftermarket components.

---

While OEM parts offer many advantages, there are some potential drawbacks to consider before purchasing the Nissan 21507-1AA0A drain plug lower insulator.

1. **Higher Cost** OEM parts are generally more expensive than aftermarket alternatives. The price reflects the brand reputation, quality assurance, and warranty coverage. For budget-conscious buyers, this can be a significant drawback, especially if the part is not critical to the vehicle s operation.

2. **Limited Availability** OEM parts may not always be readily available, particularly for older or discontinued vehicle models. This can lead to delays in ordering or require purchasing from a dealer, which may not always be convenient.

3. **Longer Lead Times** Depending on the supplier, ordering an OEM part may take longer than aftermarket options, which are often stocked in larger quantities and shipped faster. This delay can be problematic if you need the part urgently for repairs.

4. **Potential for Overkill** In some cases, OEM parts may be more robust than necessary for the specific application. For example, if the drain plug is not subjected to extreme stress, the extra durability of an OEM part might not provide any tangible benefits beyond cost.

5. **Dealer Markup** Purchasing from an authorized dealer can sometimes result in higher prices due to markup, especially if the part is sold through a franchise. Independent sellers or online marketplaces may offer better pricing for the same OEM part.

6. **Environmental and Ethical Concerns** OEM parts are often produced in facilities with higher environmental standards, but they may also contribute to electronic waste if the part is replaced prematurely. Some buyers prefer aftermarket parts that are perceived as more eco-friendly, though this is subjective.

---

The Nissan 21507-1AA0A drain plug lower insulator is an excellent choice if your priority is reliability, compatibility, and long-term performance. Its OEM status ensures that it will fit and function as intended, reducing the risk of leaks or installation problems. The warranty coverage and high-quality materials also provide added value, making it a strong option for those who want to maintain their vehicle s integrity.

However, the higher cost and potential availability issues may make it less appealing to budget-conscious buyers or those who prioritize quick turnaround times. If you are working on a project with a tight budget or need the part immediately, an aftermarket alternative that meets the same specifications might be a viable compromise. That said, for most Nissan owners who value durability and peace of mind, the OEM part is the safest and most reliable option.

If you are replacing the drain plug lower insulator on your Nissan vehicle and the part is critical to preventing leaks or maintaining engine health, **purchase the genuine OEM Nissan 21507-1AA0A part**. This ensures proper fitment, longevity, and compatibility with your vehicle s systems.

To maximize value, compare prices from multiple authorized dealers or reputable online retailers (such as RockAuto, Amazon, or eBay) to find the best deal. If you are on a tight budget and the part is not readily available, consider a high-quality aftermarket alternative from a trusted brand (e.g., ACDelco, Bosch, or Mann Filter), ensuring it is specifically designed for your Nissan model and engine type.

Ultimately, the decision should balance your budget, urgency, and the importance of the part to your vehicle s performance. For most Nissan owners, the OEM part is the best choice for long-term reliability.

Details:

Electrical parts are not returnable. 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.

part #: 215071aa0a prices

• $11.63-$13.79

specifications ocoosys:

• for models: Murano
• for makes: Nissan
• for years: 2011-2014
• mpn: 21507-1aa0a
• part type: Plug Insulator
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• year: 2011 2012 2013 2014
• parts included: Only Part Reference 9 On The Diagram Is Included

offer ocoosys:

• started: March 6, 2026
• sold: 0
• availability: In Stock
• quantity: 4
• options: Ship-to-home

seller ocoosys:

• city: Hiawatha, Iowa
• rating: 100.0%
• # reviews: 275

shipping ocoosys:

• transit: 3-6 Days
• service: Standard
• cost: $9.99
• class: Standard
• type: Fixed

general ocoosys:

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

returns ocoosys:

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

payments ocoosys:

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

Nissan 21507-1AA0A Is Similar To:

• 01558-00491 Nissan Genuine Oem Upper Hose Clamp (44% similar) Nissan upper hose clamp...(October 29th, 2018)
• 01558-00551 Nissan Infiniti Genuine Oem Upper Hose Clamp (42.2% similar) Keep it original, and real with genuine nissan original equipment manufacturer, oem, parts...(March 19th, 2018)
• 081a8-6121a Nissan Genuine Oem Pulley Bolt (42.1% similar) Delivered to your doors Twp...(March 30th, 2019)
• 11060-31u0b Nissan Infiniti 1106031u0b Genuine Oem (38.8% similar) ...(February 12th, 2017)
• 11060-3rc1a Nissan 110603rc1a Genuine Oem Water (50% similar) ...(February 12th, 2017)
• 11060-69f01 Nissan Jdm Genuine Oem Water Neck Outlet Used (40% similar) Condition is used. SR20DET S13 water neck...(March 20th, 2019)
• 11060-et00a Nissan 11060et00a Genuine Oem (44.7% similar) ...(May 17th, 2017)
• 11062-1kc0a Nissan Genuine Oem Water Outlet Gasket (40.8% similar) If you want the best performance and reliability possible for your nissan need genuine parts. Fort worth nissan parts offers one of the largest selections genuine...(November 3rd, 2018)
• 11062-et00a Nissan Genuine Oem Water Outlet Gasket (40.8% similar) ...(April 3rd, 2018)
• 11720-9e001 Nissan Genuine Oem Serpentine Belt (40.4% similar) ...(July 17th, 2018)
• 11950-4z800 Nissan 119504z800 Genuine Oem (44.7% similar) Keep it original, and real with genuine nissan original equipment manufacturer, oem, parts...(November 5th, 2017)