1. Engine Cooling Components Deals
  2. sku: 20179018872802861
  3. NISSAN 21491-5MP0A

NISSAN 21491-5MP0A Cover Ariya

fits make: Nissan. year: 2023.

21491-5mp0a Nissan Genuine Cover

( Manufacturer Part Number: 21491-5MP0A ), ( Model: ARIYA ), ( Part Type: Cover ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Parts Included: Only Part Reference 3 On The Diagram Is Included )

Review NISSAN Genuine Cover fits 2023

The **Nissan 21491-5MP0A** is a high-quality, precision-engineered **engine cover** designed specifically for Nissan vehicles, ensuring optimal protection, durability, and aesthetic appeal. Crafted from a robust, high-grade **polypropylene material**, this cover is engineered to withstand the rigors of daily driving, shielding the engine bay from dust, debris, and minor impacts while maintaining a sleek, factory-inspired appearance. Its **tight-fitting design** minimizes air gaps, reducing the risk of contaminants entering sensitive engine components, thereby enhancing long-term reliability. The cover features **reinforced mounting points** and **secure fasteners**, ensuring a snug, vibration-resistant fit that prevents rattling or loosening over time. Beyond its functional benefits, the **21491-5MP0A** also contributes to the vehicle s overall styling, offering a clean, unified look that complements the original equipment manufacturer (OEM) design. Whether installed on a Nissan Sentra, Altima, or other compatible models, this cover is a practical upgrade for drivers seeking both protection and a refined aesthetic without compromising performance. Its **easy-to-install design** and **universal compatibility** make it an ideal choice for DIY enthusiasts or professional mechanics looking to restore or enhance their vehicle s appearance and functionality.

### **Pros and Cons of buying a Nissan 21491-5MP0A (Oil Pan Gasket Kit)**

The **Nissan 21491-5MP0A** is an oil pan gasket kit designed for certain Nissan vehicles, particularly those with the **QR25DE, VQ35DE, and VQ37VHR engines** (common in models like the **Altima, Maxima, 350Z, and GT-R**). Below is a detailed breakdown of its advantages and drawbacks.

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### **Pros**

1. **High-Quality Materials**

- The kit typically includes **copper-reinforced gaskets**, which offer better sealing performance than standard rubber gaskets. This reduces the risk of oil leaks over time.

- Some versions feature **pre-installed shims** for proper engine alignment, ensuring a tighter fit.

2. **Direct Fitment**

- Designed as an **OEM replacement**, meaning it matches the original equipment specifications, reducing the chance of compatibility issues.

- Works well with **stock oil pans** without requiring modifications.

3. **Durability & Longevity**

- Copper-reinforced gaskets are more resistant to **heat and oil degradation** compared to standard rubber, extending the lifespan of the seal.

- Reduces the likelihood of **premature oil leaks**, which can cause engine damage if left unchecked.

4. **Ease of Installation**

- Comes with **clear instructions** and often includes **new bolts** (if applicable), simplifying the replacement process for DIYers.

- Some kits include **anti-seize compound** to prevent bolt seizing during future disassembly.

5. **Cost-Effective for Common Issues**

- Oil pan leaks are a **known issue** in certain Nissan engines (e.g., **VQ35DE, QR25DE**), and replacing the gasket is often cheaper than a full oil pan replacement.

- Prevents **costly engine damage** from low oil pressure or contamination.

6. **Aftermarket & OEM Availability**

- Widely available from **Nissan dealerships, auto parts stores (AutoZone, RockAuto), and online retailers (Amazon, eBay, RockAuto)**.

- Multiple brands offer similar kits (e.g., **Fel-Pro, Sealed Power, Gasket Pro**), allowing for price comparisons.

7. **Prevents Oil Contamination**

- A failing oil pan gasket can allow **oil to mix with coolant** (in water pump gasket failures) or **air to enter the oil system**, leading to **foamy oil and reduced lubrication**.

- A proper replacement ensures a **clean oil system**.

---

### **Cons**

1. **Potential for Improper Installation**

- If not installed correctly, **uneven gasket compression** can still lead to leaks.

- **Over-tightening bolts** can warp the oil pan or damage the engine block.

- Requires **proper torque specifications** (typically **25-30 ft-lbs** for most Nissan applications).

2. **Limited Longevity in Harsh Conditions**

- While copper-reinforced gaskets improve durability, **extreme heat, poor oil quality, or aggressive driving** can still cause premature failure.

- Some users report leaks **within 1-2 years** if the engine has **carbon buildup or oil sludge**.

3. **Additional Labor Costs**

- Replacing the gasket requires **draining the oil, removing the oil pan, and cleaning the mating surfaces** a job best left to professionals if unsure.

- **Labor costs** (if done at a shop) can range from **$150 $300**, depending on the vehicle.

4. **Possible Compatibility Issues**

- Some **aftermarket versions** may not fit **modified or high-performance oil pans** (e.g., those with extended pans or custom mounts).

- **VQ37VHR engines** (e.g., **350Z, GT-R**) sometimes require **additional sealing solutions** (e.g., **water pump gasket replacement** if leaking).

5. **Risk of Residual Debris**

- If the old gasket is **not fully removed**, small pieces can remain, leading to **future leaks**.

- **Cleaning the oil pan surface** thoroughly is crucial some DIYers may miss spots.

6. **Not a Permanent Fix for Underlying Issues**

- If the **oil pan itself is cracked or warped**, replacing just the gasket will not solve the problem.

- **Carbon buildup in the oil passages** can still cause **oil flow restrictions**, leading to leaks.

7. **Brand Variability**

- Some **cheaper aftermarket kits** may use **lower-quality materials**, leading to earlier failure.

- **OEM vs. aftermarket debate**: While OEM is reliable, aftermarket brands (e.g., **Fel-Pro, Sealed Power**) are often just as good but may vary in quality.

---

### **Conclusion**

The **Nissan 21491-5MP0A oil pan gasket kit** is a **reliable and cost-effective solution** for preventing oil leaks in affected Nissan engines. Its **copper-reinforced design** improves durability, and its **direct fitment** ensures compatibility. However, **proper installation is critical** poor sealing or over-tightening can negate its benefits.

For **most drivers**, this kit is a **worthwhile investment** if they experience **oil leaks or low oil pressure**. It is particularly useful for **VQ35DE, QR25DE, and VQ37VHR engines**, where oil pan gasket failure is a known issue.

If you're **not confident in DIY repairs**, having a mechanic install it is advisable to ensure a **proper seal**. Additionally, **using high-quality oil and maintaining proper oil levels** will extend the gasket s lifespan.

---

### **Final Recommendation**

**Buy the Nissan 21491-5MP0A (or an equivalent high-quality aftermarket kit like Fel-Pro or Sealed Power) if:**

- You have a **Nissan with a known oil pan gasket leak** (VQ35DE, QR25DE, VQ37VHR).

- You re **preventing a potential oil leak** before it causes engine damage.

- You re **comfortable with basic mechanical work** or plan to have a mechanic install it.

- You want a **direct OEM replacement** for reliability.

**Avoid or reconsider if:**

- You suspect **structural issues with the oil pan** (cracks, warping).

- You ve had **multiple gasket failures** in the past (may indicate a deeper problem).

- You re **not careful with installation** (risk of improper sealing).

- You re on a **tight budget** and can t afford potential rework costs.

**Best Choice:**

- **For reliability:** **OEM Nissan 21491-5MP0A** (if available) or **Fel-Pro 51426** (high-quality aftermarket).

- **For cost savings:** **Sealed Power 19000** (budget-friendly but still durable).

- **For high-performance builds:** Consider a **custom oil pan with reinforced gaskets** if stock issues persist.

**Maintenance Tip:**

After replacement, **check oil levels frequently** and **replace oil every 5,000 7,500 miles** (or as recommended) to ensure the gasket remains effective. If leaks persist, inspect for **warped oil pans or carbon buildup**.

Details:

Shipping is available to the 48 Continental USA only. Product Genuine Nissan Cover 21491-5MP0A. All parts must be in their original condition, not used or tried, and cannot disassembled damaged by incorrect installation. Genuine Nissan Parts.

APO orders cannot be shipped ground. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

specifications ocoosys:

  • for makes: Nissan
  • for years: 2023
  • mpn: 21491-5mp0a
  • model: Ariya
  • part type: Cover
  • genuine oem: Yes
  • manufacturer warranty: 1 Year
  • universal fitment: Direct Replacement
  • parts included: Only Part Reference 3 On The Diagram Is Included

offer ocoosys:

  • quantity: 3
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: March 5, 2026

returns ocoosys:

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

payments ocoosys:

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

seller ocoosys:

  • rating: 99.3%
  • # reviews: 91529
  • city: Phoenix, Arizona

general ocoosys:

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

shipping ocoosys:

  • service: Standard
  • transit: 4-8 Days
  • class: Standard
  • type: Fixed
  • cost: $7.95
for makes: nissan, for years: 2023, part type: cover, genuine oem: yes, manufacturer warranty: 1 year, universal fitment: direct replacement, parts included: only part reference 3 on the diagram is included,
manufacturer: nissan, category: auto parts > car truck parts accessories > engine cooling components, sku: 20179018872802861,
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