GM 3747379 Nos Fender Louvers Set

( Brand: Gm ), ( Manufacturer Part Number: 3747379 ), ( Part Type: Fender ), ( Country Of Origin: United States )

Review GM Nos Chevy Fender Louvers Full Set fits IMPALA 1958

The **GM 3747379 NOS (New Old Stock) 1958-1959 Chevrolet Impala Fender Louvers Set** represents a meticulously preserved piece of automotive history, designed to restore or enhance the classic aesthetic of one of the most iconic American muscle cars of the late 1950s. These louvers, originally crafted by General Motors as part of the Impala s signature styling cues, are a hallmark of the model s bold, aggressive front-end design, blending functional ventilation with bold, chrome-trimmed flair. The set includes both left and right fender louvers, each featuring a distinctive, slightly curved, trapezoidal shape with a pronounced vertical ridge that not only adds to the car s visual impact but also serves a practical purpose by allowing air to flow through the fenders while dissipating heat. Crafted from high-quality, die-stamped steel, these louvers exhibit the same crisp, sharp edges and clean lines that define the original 1958-59 Impala, ensuring an authentic fit and finish. The chrome trim, though likely to show signs of age due to their NOS condition, retains the signature GM shine that was a staple of mid-century automotive design, adding a touch of vintage elegance to any restored or customized Chevy. Whether used for a full restoration, a period-correct modification, or as a statement piece for a modern classic, this set is a must-have for enthusiasts seeking to capture the unmistakable character of the Impala s heyday. The NOS designation guarantees that these louvers have been carefully preserved in their original condition, free from modern alterations, making them a rare and valuable addition to any collector s garage or a builder s project.

**Pros and Cons of Buying a GM Part Number 3747379 (1958-58 Chevy Impala Fender Louvers Set)**

1. **Authentic Fit and Finish** This part is designed specifically for 1958-58 Chevy Impala models, ensuring a precise fit and matching the original styling cues. Authentic parts preserve the vehicle s historical accuracy and resale value, especially for collectors or enthusiasts who prioritize period-correct modifications.

2. **Durability and Quality** GM parts, even aftermarket reproductions, are generally built to withstand the rigors of daily driving or show car use. The materials used in fender louvers are typically sturdy, resistant to rust, and capable of enduring weather exposure if the vehicle is used outdoors.

3. **Enhanced Aesthetics** Fender louvers add a distinctive, aggressive look to the Impala s front fenders, which was a hallmark of the 1958-58 styling. Restoring or replacing them can significantly improve the car s visual appeal, making it stand out in classic car circles or at car shows.

4. **Compatibility with Other Modifications** Since this part is designed for the Impala, it will integrate seamlessly with other aftermarket or restoration components, such as custom grilles, bumpers, or paint schemes. This makes it easier to achieve a cohesive, customized look without compatibility issues.

5. **Potential Increase in Value** For a well-maintained or restored 1958-58 Impala, authentic or high-quality aftermarket parts like these louvers can enhance the car s collectible value. Buyers and judges at classic car events often favor vehicles with original or period-correct modifications.

6. **Ease of Installation** While installation may require some mechanical skill, the part is designed to fit standard Impala fenders without extensive modifications. Many enthusiasts find that with basic tools and patience, they can complete the job themselves, saving on labor costs.

7. **Protection for the Fender** Louvers can provide some minor protection to the lower edge of the fender, shielding it from minor impacts or debris during driving. While not a primary function, this can be a secondary benefit for daily drivers.

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1. **Cost** Authentic or high-quality aftermarket parts for classic cars can be expensive, especially when sourced from reputable manufacturers. The price of this louvers set may be significantly higher than generic or lower-quality alternatives, which could strain a tight budget for other restoration needs.

2. **Availability and Lead Times** Depending on the supplier, this part may not always be in stock, leading to delays in receiving it. Some specialty suppliers or GM parts dealers may require pre-ordering, which can disrupt a restoration timeline.

3. **Potential for Counterfeit Parts** The classic car market has seen an increase in counterfeit or poorly made replicas. Buyers must verify the authenticity of the part, its manufacturer, and the materials used to ensure it meets quality standards. A cheap knockoff could look identical but fail prematurely or not fit correctly.

4. **Installation Challenges** While the part is designed to fit, installation may require disassembling existing components (e.g., bumpers, grilles, or trim) or addressing rust or damage to the fender itself. This could add time and labor costs if professional help is needed.

5. **Maintenance Requirements** If the louvers are made of metal, they may rust over time, especially if the car is exposed to salt, moisture, or harsh weather. Regular maintenance, such as cleaning and applying protective coatings, will be necessary to prevent deterioration.

6. **Limited Functional Benefit** Unlike some aftermarket parts, fender louvers primarily serve an aesthetic purpose. They do not improve performance, fuel efficiency, or safety. Buyers should be aware that the investment is largely cosmetic.

7. **Market Saturation** For enthusiasts with deep pockets, there are numerous aftermarket alternatives (e.g., chrome, polished, or painted louvers) that could offer additional customization options. This may require additional spending to achieve a specific look.

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Buying the GM part number 3747379 (1958-58 Chevy Impala fender louvers set) is a worthwhile investment for owners who prioritize authenticity, historical accuracy, and the classic Impala s signature styling. The part offers durability, ease of installation (with some effort), and the potential to enhance the car s value and appearance. However, the cost, potential for counterfeit parts, and maintenance requirements should be carefully considered. If budget allows and the buyer is committed to restoring or maintaining the vehicle, this is a strong choice. For those on a tighter budget or seeking more customization, alternatives may exist, but they may not match the original design as closely.

- You are restoring or maintaining a 1958-58 Chevy Impala and want to preserve its original aesthetic.

- You have verified the supplier s reputation to ensure authenticity and quality.

- You are prepared for the installation process and potential maintenance needs.

- The cost fits within your overall restoration budget without compromising other essential repairs.

- You are seeking a low-cost, non-essential modification.

- You are unsure about the supplier s legitimacy or the part s condition upon arrival.

- Your primary goal is performance or functionality rather than cosmetic enhancement.

- You lack the time or tools to install it properly, and labor costs would make the project unaffordable.

For best results, pair this purchase with other period-correct components and regular upkeep to ensure the Impala remains a showstopper for years to come.

Details:

1958 Chevy Impala Left Fender Louvers Factory Part# 3747379 in original box with nuts these are for the Drivers side NOS and very nice shape but also 70 years old Impossible to find shipping 12.00 52026.

part #: 3747379 price

• $99.95

specifications atvfendersgo:

• for models: Impala
• for makes: Chevy
• for years: 1958
• brand: Gm
• mpn: 3747379
• part type: Fender
• country of origin: United States

offer atvfendersgo:

• started: May 20, 2026
• best offers: True
• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home

shipping atvfendersgo:

• transit: 2-7 Days
• class: Standard
• service: USPS Ground Advantage
• carrier: USPS
• cost: $12.89
• type: Fixed

payments atvfendersgo:

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

returns atvfendersgo:

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

seller atvfendersgo:

• rating: 100.0%
• city: Shorewood, Illinois
• # reviews: 20344

general atvfendersgo:

• condition: New
• Body Frame > Body Parts, doors Fenders > Fenders

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