1. Auto Bumpers & Reinforcements Products
  2. sku: 31510196781623741
  3. INFINITI 620746SA4A

INFINITI 620746SA4A Bumper

fits make: Infiniti.

620746sa4a Infiniti Genuine Bumper Trim

( Manufacturer Part Number: 620746SA4A ), ( Part Type: Bumper ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 9 On The Diagram Is Included ), ( Replaces Part Number: 620746sa0a ), ( Placement On Vehicle: Front Right Lower, Right Lower )

Review INFINITI Genuine Bumper Trim

The **Infiniti Q50/Q60 (620746SA4A) Front Bumper** is a meticulously engineered, high-performance component designed to enhance both the aesthetic appeal and structural integrity of your luxury Infiniti vehicle. Crafted from premium-grade, high-impact polycarbonate resin reinforced with fiberglass, this bumper is engineered to withstand the rigors of daily driving while maintaining a sleek, factory-aligned appearance. The design features a seamless integration with the vehicle s bodywork, ensuring a crisp, factory-like fitment that preserves the vehicle s sporty yet refined silhouette. The bumper s aerodynamic contours are optimized for reduced drag and improved airflow, contributing to enhanced fuel efficiency and a more dynamic driving experience. Beneath its polished exterior, the bumper incorporates a robust internal frame and mounting system, including precision-engineered brackets and rubber bushings, which absorb road vibrations and impact forces, protecting both the bumper and the vehicle s undercarriage. The front bumper also houses essential functional elements, such as integrated fog light housings (if applicable), a central air intake for engine cooling, and reinforced impact zones to absorb minor collisions and prevent damage to critical components. Available in a matte black or glossy finish, this bumper is designed to complement the vehicle s overall color scheme while offering durability and longevity. Whether you re seeking a replacement for an accident-damaged bumper or an upgrade for a customization project, this part ensures a perfect blend of form and function, upholding Infiniti s commitment to performance, safety, and premium craftsmanship.

### Pros and Cons of buying a Infiniti Q50 (VQ30DE Engine) with Part Number 620746SA4A (Front Bumper)

#### **Pros of the Infiniti Q50 (General Model)**

1. **Performance and Engineering**

The Infiniti Q50 is built on Nissan s solid D platform, which is shared with the Nissan GT-R and other high-performance models. This foundation provides a strong chassis, precise handling, and excellent road manners. The VQ30DE engine (a 3.0-liter twin-turbo V6) delivers strong power (333 horsepower and 311 lb-ft of torque) and smooth acceleration, making it a capable luxury sports sedan.

2. **Luxury and Comfort**

The Q50 offers a refined, upscale interior with high-quality materials, ergonomic seating, and advanced infotainment (including a large touchscreen and available wireless Apple CarPlay/Android Auto). The ride is comfortable, with well-tuned suspension that balances sportiness and comfort.

3. **Reliability and Durability**

The VQ30DE engine is known for its longevity when properly maintained. Nissan/Infiniti dealerships and independent mechanics have a strong track record of servicing this engine, and many owners report minimal issues if routine maintenance is followed. The Q50 s transmission (typically a CVT or automatic) is also reliable, though some owners report CVT longevity concerns over very high mileage.

4. **Resale Value**

The Q50 holds its value reasonably well compared to other luxury sedans, especially in its performance-oriented trims. This makes it a practical choice if you plan to sell or trade it in the future.

5. **Safety Features**

The Q50 comes standard with advanced safety tech like blind-spot monitoring, rear cross-traffic alert, lane-keeping assist, and adaptive cruise control. Higher trims include advanced driver-assistance systems (ADAS) like semi-autonomous driving modes.

6. **Customization and Aftermarket Support**

The Q50 has a dedicated aftermarket community, with options for tuning, aesthetic upgrades, and performance parts. This allows owners to tailor the vehicle to their preferences, whether for daily driving or track use.

7. **Fuel Efficiency (Compared to Other Luxury Sports Sedans)**

While not as efficient as some smaller luxury cars, the Q50 s VQ30DE engine offers decent fuel economy for its class, especially in hybrid trims (though the base Q50 is not hybrid). Expect around 18-22 MPG combined, which is competitive for a turbocharged V6 sedan.

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#### **Cons of the Infiniti Q50 (General Model)**

1. **CVT Transmission Reliability Concerns**

The standard CVT (Continuously Variable Transmission) in the base Q50 has a reputation for longevity issues, particularly beyond 100,000 miles. While not as problematic as some older CVTs, it requires more frequent fluid changes and can be less engaging than a traditional automatic or manual transmission. The 7-speed dual-clutch transmission (available in higher trims) is more refined but still not as smooth as a traditional automatic.

2. **Turbocharger Lag and Throttle Response**

The VQ30DE s twin-turbo setup can exhibit slight turbo lag, especially at low RPMs, which may feel less responsive than naturally aspirated engines or direct-injection turbocharged rivals (e.g., BMW S55). Some owners report a slight delay in power delivery when accelerating from a stop.

3. **Noise and Vibration**

The Q50 can be noisy at highway speeds, with wind and road noise penetrating the cabin. The engine bay is also slightly louder than some competitors, though this is typical for turbocharged V6s. Vibration through the steering wheel at certain RPMs can be noticeable, though this is often addressed with suspension tuning or wheel balancing.

4. **Maintenance Costs**

While the VQ30DE is reliable, it requires more frequent maintenance than a naturally aspirated engine, including:

- Regular turbo oil changes (every 10,000 15,000 miles).

- Coolant system flushes (every 60,000 miles).

- Spark plug replacements (every 60,000 100,000 miles).

- Timing chain inspection (though the VQ30DE has a non-interference timing system, it s still good practice to monitor).

These costs can add up over time, especially if the owner neglects maintenance.

5. **Build Quality and Interior Materials**

While the Q50 s interior is upscale, some owners report minor quality control issues, such as plastic trim that feels less premium than competitors like the BMW 5 Series or Mercedes E-Class. The gear shifter and clutch (in manual trims) can also feel less refined than in some rivals.

6. **Resale Value vs. Competitors**

While the Q50 holds its value well, it does not depreciate as slowly as some luxury brands (e.g., Lexus or Genesis). If you re looking for a long-term investment, a Lexus GS or Genesis G80 might be more stable in resale value.

7. **Limited Availability of Parts**

As Infiniti has shifted focus to the QX and Q60 models, some parts (especially for older trims) can be harder to source, though the VQ30DE remains widely supported by Nissan dealerships and aftermarket suppliers.

8. **Infotainment Lag and Software Issues**

The Q50 s infotainment system (especially in older models) can suffer from lag, slow app loading, and occasional software glitches. While updates have improved this, it s still not as smooth as some rivals (e.g., Audi or Genesis).

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#### **Specifics About the Part Number: 620746SA4A (Front Bumper)**

The **620746SA4A** is the part number for the **front bumper assembly** (likely for the Infiniti Q50, Q60, or related models with a similar bumper design). Here s what to consider about this specific part:

**Pros of Purchasing This Bumper:**

1. **OEM Quality and Fit**

An OEM (Original Equipment Manufacturer) bumper ensures a perfect fit and match with the rest of the vehicle s body. This reduces the risk of gaps, misalignment, or poor aesthetics compared to aftermarket parts.

2. **Reliability and Durability**

OEM bumpers are built to withstand the same rigorous testing as the original equipment, including crash and impact resistance. This can be particularly important for safety and long-term durability.

3. **Warranty Coverage**

Purchasing from an authorized dealer or Nissan/Infiniti-approved supplier may include a warranty, providing peace of mind in case of manufacturing defects or installation issues.

4. **Compatibility with Aftermarket Mods**

If you plan to modify your Q50 (e.g., lowering springs, wider wheels, or body kits), an OEM bumper provides a solid base to work from. Some aftermarket bumpers may not align well with these modifications.

5. **Resale Value**

Keeping the vehicle in original condition (or with OEM replacements) can help maintain its resale value, especially if you plan to sell it in the future.

**Cons of Purchasing This Bumper:**

1. **Cost**

OEM bumpers are significantly more expensive than aftermarket alternatives. The price can range from **$800 to $1,500 **, depending on the supplier and whether labor is included. Aftermarket bumpers may cost **$300 $600**, though quality varies widely.

2. **Longer Lead Times**

OEM parts, especially for older models, may have longer lead times due to inventory constraints. You may need to order through a dealer or specialty parts supplier, which can delay repairs.

3. **Potential for Counterfeit Parts**

Buying from unauthorized sellers (e.g., eBay, Craigslist, or unscrupulous online marketplaces) risks receiving counterfeit or salvaged parts. Always verify the supplier s reputation and authenticity of the part number.

4. **Installation Complexity**

Replacing a front bumper often requires removing the headlights, fog lights, and grille, as well as reattaching various clips and brackets. While many mechanics can do this in a few hours, DIY installation is challenging and may void warranties if done improperly.

5. **Weight and Aesthetics**

OEM bumpers are heavier than some aftermarket alternatives, which can slightly affect handling. Additionally, if you prefer a more aggressive or custom look, an OEM bumper may not offer the design flexibility of aftermarket options.

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### **Conclusion**

The **Infiniti Q50 with the VQ30DE engine** is a well-rounded luxury sports sedan that excels in performance, reliability, and driving dynamics. Its turbocharged V6 provides strong power, the D platform offers a solid foundation, and the interior is comfortable and feature-rich. However, potential buyers should be aware of the **CVT transmission concerns, maintenance costs, and turbo lag**, which may require extra attention.

For the **specific part number 620746SA4A (front bumper)**, purchasing an **OEM replacement** is ideal if you prioritize quality, fit, and long-term reliability. However, the higher cost and potential

Details:

Parts must be resalable and in the original packaging. 2022 -25, bumper cover trim, black. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Electrical parts are not returnable.

part #: 620746sa4a prices

  • $68.03-$105.52

specifications frontbumperus:

  • for makes: Infiniti
  • mpn: 620746sa4a
  • part type: Bumper
  • genuine oem: Yes
  • manufacturer warranty: 1 Year
  • fitment type: Direct Replacement
  • parts included: Only Part Reference 9 On The Diagram Is Included
  • replaces part number: 620746sa0a
  • placement on vehicle: Front Right Lower, Right Lower

seller frontbumperus:

  • # reviews: 436
  • rating: 92.0%
  • city: Roanoke, Virginia

payments frontbumperus:

  • other
  • wallet: Paypal
  • credit card: Visa

general frontbumperus:

  • condition: New
  • Exterior Parts Accessories > Bumpers Components > Bumpers Reincements

offer frontbumperus:

  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: May 23, 2026

returns frontbumperus:

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

shipping frontbumperus:

  • transit: 7-13 Days
  • service: UPS Ground
  • cost: $10.00
  • class: Standard
  • type: Fixed
  • carrier: UPS
for makes: infiniti, part type: bumper, genuine oem: yes, manufacturer warranty: 1 year, fitment type: direct replacement, parts included: only part reference 9 on the diagram is included, replaces part number: 620746sa0a, placement on vehicle: front right lower, right lower,
category: auto parts > exterior parts accessories > bumpers components > bumpers reincements, sku: 31510196781623741,
Infiniti 620746SA4A Is Similar To:
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4 offers $68.03–$105.52 USD
  • New. Offer #1 priced at $89.06 + $10.00 shipping estimate = $99.06* total. 2022-25, bumper cover & trim, black Genuine Infiniti Parts.+$10.00 shipping
  • New. Offer #2 priced at $105.52 + $0.00 shipping estimate = $105.52* total. Condition: New. Read all notes and compare with your vehicle information.FREE SHIPPING
  • New. Offer #3 priced at $68.03 + $24.41 shipping estimate = $92.44* total. +$24.41 shipping
  • New. Offer #4 priced at $83.45 + $7.99 shipping estimate = $91.44* total. +$7.99 shipping

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