MAZDA KB7W51920 Rear Left Quarter Air Pressure Vent Grille KB7W51921

( Manufacturer Part Number: KB7W51920 ), ( Listed: Uv41 ), ( Type: Grille ), ( Placement On Vehicle: Rear, Left ), ( Color: Black ), ( Material: Plastic ), ( Oe/oem Part Number: Kb7w51920 / Kb7w 51 920, Kb7w51921 / Kb7w 51 921 )

Review MAZDA Rear Left Quarter Air Pressure Vent Grille Oem fits CX-5 2017–2025

The **Mazda KB7W51920 (2017 2025 CX-5 Rear Left Quarter Air Pressure Vent Grille, part number KB7W51921)** is a precision-engineered component designed to enhance both the aerodynamic efficiency and functional aesthetics of Mazda s iconic compact SUV, the CX-5. This high-quality grille vent, crafted from durable, lightweight materials, integrates seamlessly into the vehicle s sleek bodywork, ensuring a clean and cohesive appearance while contributing to optimal airflow management. Positioned strategically at the rear left quarter panel, it plays a critical role in regulating air pressure and reducing drag, which not only improves fuel efficiency but also supports the vehicle s overall handling dynamics. The design reflects Mazda s signature blend of sporty sophistication and practicality, with its smooth, contoured shape complementing the CX-5 s aggressive yet refined silhouette. Whether installed as part of a restoration, a customization project, or a routine maintenance upgrade, this grille vent ensures that the vehicle maintains its factory-intended performance and visual appeal. Built to Mazda s exacting standards, it guarantees a perfect fit and long-lasting durability, making it an essential component for owners seeking both form and function in their CX-5.

### **Pros and Cons of buying a Mazda KB7W51920 (2017 2025 CX-5 Rear Left Quarter Air Pressure Vent Grille)**

1. **OEM Quality and Fit** This part is manufactured by Mazda, ensuring a proper fit and finish that matches the original equipment. It avoids the risk of aftermarket parts that may not align correctly with the vehicle s structure.

2. **Durability** Mazda parts are typically built to last, especially for critical components like grille vents that help with airflow and cooling. The reinforced design should resist warping or cracking over time.

3. **Aesthetic Consistency** The grille vent maintains the vehicle s original styling, which is important for resale value and owner preference. It blends seamlessly with the CX-5 s aggressive yet sporty front fascia.

4. **Functionality** The vent grille allows airflow to the brake cooling ducts and other under-hood components, preventing overheating. A properly functioning vent is essential for long-term reliability.

5. **Warranty Coverage** If purchased from an authorized Mazda dealer or a reputable online retailer, the part may come with a warranty, providing peace of mind against defects.

6. **Easy Installation** The design is straightforward, and many DIYers can replace it without specialized tools. Mazda s parts are often easier to install than aftermarket alternatives that may require additional modifications.

7. **Compatibility with Modifications** If you ve customized your CX-5 (e.g., added a front splitter or lower bumper), this vent ensures proper airflow without compromising the vehicle s aerodynamics.

1. **Higher Cost** Mazda OEM parts are more expensive than aftermarket alternatives. While this ensures quality, it may be a significant upfront investment, especially if replacing multiple components.

2. **Limited Availability** Depending on the region, finding this specific part may require ordering from a Mazda dealer or an online marketplace, which could involve shipping delays.

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

4. **No Upgrades** Unlike aftermarket options, this part does not offer performance enhancements (e.g., larger vents for better airflow). It is purely a replacement for worn or damaged components.

5. **Labor Costs if Professional Installation is Needed** While DIY-friendly, some owners may prefer a mechanic to install it, adding to the total cost. Mazda dealerships may charge premium labor rates.

6. **Potential for Wear Over Time** Even OEM parts can degrade due to road debris, corrosion, or impacts. Regular inspections are recommended to catch issues early.

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### **Conclusion**

The **Mazda KB7W51920 (2017 2025 CX-5 rear left quarter air pressure vent grille)** is a high-quality, reliable replacement part that ensures proper airflow and maintains the vehicle s original appearance. Its OEM status guarantees a secure fit and durability, making it ideal for owners who prioritize authenticity and long-term performance. However, the higher cost and potential availability issues may deter some buyers, especially those on a tight budget or looking for performance upgrades.

- Want to restore their vehicle to factory condition.

- Plan to keep the car long-term and maintain its resale value.

- Prefer the peace of mind of an authorized Mazda part.

If cost is a major concern, comparing prices from multiple dealers (including online marketplaces like RockAuto or Mazda s official site) can help secure the best deal. For those open to alternatives, aftermarket parts (e.g., from ACDelco or Mann Filter) may offer similar performance at a lower price, though with slightly less assurance of a perfect fit.

- You need an exact replacement for your CX-5 s vent grille.

- You value OEM quality and want to avoid compatibility issues.

- You re willing to pay a premium for a part that matches your vehicle s specifications.

- You re on a tight budget and can find a high-quality aftermarket equivalent.

- You re comfortable with a slight risk of fitment issues (though reputable brands minimize this).

- You prioritize performance upgrades (e.g., larger vents) over exact OEM replication.

- **Authorized Mazda Dealers** (for warranty coverage and authenticity).

- **Online Marketplaces** (RockAuto, eBay with verified sellers, or Mazda s official parts store).

- **Specialty Auto Parts Stores** (e.g., AutoZone, NAPA) for in-person inspection before purchase.

Always inspect the part upon arrival and ensure it matches your vehicle s year and trim before installation. If in doubt, consult a Mazda technician to confirm compatibility.

Details:

Locations without a dock or forklift will incur lift gate fee. 60-day return period begins on the day part is delivered. Are final sale. Shipping charges are based on delivery zip code and apply to the lower 48 states.

This MUST be specified AT TIME OF PURCHASE. All listed parts have already been removed from donor vehicles and are on the shelf ready to be shipped. Orders are shipped via USPS, UPS, or FedEx. 2017 - 2025 MAZDA CX-5 REAR LEFT QUARTER AIR PRESSURE VENT GRILLE OEM KB7W51921 Menu.

High quality pictures are provided for each item so you can see its exact condition. Items are sold in good, working condition and have been inspected prior to listing.

part #: kb7w51920 prices

• $32.99-$53.98

specifications grilexte:

• for models: Cx-5
• for makes: Mazda
• for years: 2017-2025
• mpn: Kb7w51920
• listed: Uv41
• type: Grille
• placement on vehicle: Rear, Left
• color: Black
• material: Plastic
• oe/oem part number: Kb7w51920 / Kb7w 51 920, Kb7w51921 / Kb7w 51 921

shipping grilexte:

• service: Standard
• cost: $0.00
• type: Fixed
• class: Standard
• transit: 2-4 Days

offer grilexte:

• availability: In Stock
• started: May 26, 2026
• options: Ship-to-home
• best offers: True
• quantity: 1
• sold: 0

returns grilexte:

• time: 60 Days
• policy: Returns Accepted
• paid by: Seller

payments grilexte:

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

seller grilexte:

• rating: 100.0%
• city: Nicholasville, Kentucky
• # reviews: 87014

general grilexte:

• condition: Used
• Car Truck Parts Accessories > Exterior Parts Accessories > Grilles

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