GM 1247746 Nos Car Muffler Tailpipe Insulator Retainer

( Brand: Gm ), ( Manufacturer Part Number: 1247746 ), ( Part Type: Muffler Insulator ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review GM Nos Chevy Pass Car Muffler Tailpipe Insulator Retainer fits CHEVELLE 1975-77

The **GM 1247746 NOS (New Old Stock) Muffler Tailpipe Insulator Retainer** is a meticulously preserved, high-quality replacement part designed specifically for **1975 1977 Chevrolet Chevelle** models, ensuring a perfect fit for exhaust systems requiring this critical component. This retainer serves as a vital link between the muffler and tailpipe assembly, securing the exhaust components in place while minimizing heat transfer, vibration, and potential leaks. Crafted from durable, heat-resistant materials, the retainer is built to withstand the rigorous demands of high-performance driving and daily commuting alike, offering both functionality and longevity. Its original condition preserved in pristine, near-mint form makes it an ideal choice for restoration projects, classic car enthusiasts, or mechanics seeking authentic, high-quality NOS parts that match the original factory specifications. The retainer s precise engineering ensures a snug, interference-free fit, reducing the risk of exhaust system failure while maintaining the vehicle s original aesthetic and performance integrity. Whether restoring a show-quality Chevelle or maintaining a daily driver, this NOS retainer guarantees reliability and authenticity, bridging the gap between modern demands and vintage craftsmanship.

**Pros and Cons of Buying a GM 1247746 NOS (New Old Stock) Muffler Tailpipe Insulator Retainer for a 1975-77 Chevy Chevelle**

1. **Authentic Fitment** The part is designed specifically for 1975-1977 Chevelle models, ensuring compatibility without modifications. NOS parts are often sourced from original production runs, reducing the risk of mismatched dimensions or materials.

2. **High-Quality Materials** GM NOS parts are typically made from durable materials like steel or heavy-duty alloys, which can withstand the stresses of exhaust system use. This minimizes the risk of premature failure compared to aftermarket alternatives.

3. **Reliability and Longevity** Since these parts were used in production vehicles, they are less likely to have common defects found in newer aftermarket components. If properly maintained, they can last the lifetime of the exhaust system.

4. **Aesthetic Consistency** For restoration or classic car projects, NOS parts maintain the original look and feel of the vehicle s exhaust system. This is particularly valuable for enthusiasts who prioritize authenticity.

5. **Ease of Installation** Being an original component, the part is designed to fit seamlessly with the rest of the exhaust system, reducing the complexity of installation compared to aftermarket parts that may require additional adapters or modifications.

6. **Resale Value** If you ever decide to sell the vehicle or parts, NOS components can appeal to collectors and restorers, potentially increasing the car s value.

7. **Reduced Risk of Compatibility Issues** Aftermarket parts may not always align perfectly with the vehicle s exhaust system, leading to leaks or improper function. NOS parts eliminate this guesswork.

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1. **Limited Availability** NOS parts are often sourced from inventory held for decades, and stock can be depleted. Finding a specific part like this retainer may require searching multiple suppliers or waiting for restocks.

2. **Higher Cost** NOS parts are typically more expensive than aftermarket alternatives due to their age, rarity, and perceived value. For budget-conscious buyers, this can be a significant drawback.

3. **Potential for Wear or Damage** Even though the part is new old stock, it may have been stored for years and could show signs of rust, corrosion, or minor wear. Inspection is crucial to ensure it is in usable condition.

4. **No Warranty** NOS parts are generally sold "as-is," meaning there is no manufacturer warranty or return policy. If the part fails prematurely, you are responsible for replacement costs.

5. **Ethical Concerns** Some NOS parts come from salvaged vehicles, raising ethical questions about whether the part was obtained legally or responsibly. Buyers should verify the source if this is a concern.

6. **Potential for Counterfeit Parts** The NOS market can be flooded with counterfeit or reconditioned parts sold as "new old stock." Buyers must thoroughly research sellers and inspect parts for authenticity (e.g., checking serial numbers, material quality, and packaging).

7. **No Upgrades or Modern Improvements** Unlike aftermarket parts, NOS components do not benefit from modern manufacturing advancements, such as improved corrosion resistance or lighter materials. This may lead to shorter lifespan in harsh conditions.

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Buying a GM 1247746 NOS muffler tailpipe insulator retainer for your 1975-1977 Chevelle offers significant advantages in terms of authenticity, reliability, and fitment. It is an ideal choice if you prioritize originality, long-term durability, and the integrity of your vehicle s restoration. However, the higher cost, limited availability, and lack of warranty or guarantees may be dealbreakers for some buyers, especially those working within a tight budget or seeking modern performance upgrades.

For most classic car enthusiasts focused on preservation and authenticity, the pros outweigh the cons. If you are on a budget or willing to compromise on originality, aftermarket alternatives may offer a more cost-effective solution without sacrificing too much in terms of function.

If you are restoring or maintaining a Chevelle and the retainer is a critical part of your exhaust system, purchasing the NOS GM 1247746 part is highly recommended. Ensure you buy from a reputable supplier (such as eBay s official NOS sellers, specialty classic car parts dealers, or trusted auction houses) to verify authenticity and condition. Inspect the part thoroughly for rust, cracks, or damage before purchasing.

If cost is a major concern, consider an aftermarket retainer from a well-reviewed manufacturer (e.g., EBC, Flowmaster, or Holley), but be prepared to verify its compatibility with your specific exhaust setup. Always prioritize quality over price to avoid future issues.

Details:

You are buying on a NOS 1975-77 CHEVY PASS CAR CHEVELLE MUFFLER TAILPIPE INSULATOR RETAINER 1247746. I only ship to the lower 48 states. I am selling off a life long collection of parts. It is NOS in the factory box, but box tattered/extremely from storage.

In addition, there is writing and tape on the packaging pictured. Happy buying!, Yellow/Black Bin 2.

part #: 1247746 prices

• $17.10-$37.99

specifications emissyste:

• for models: Chevelle
• for makes: Chevy
• for years: 1975-77
• brand: Gm
• mpn: 1247746
• part type: Muffler Insulator
• vintage part: Yes
• country of origin: United States

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New other see details

seller emissyste:

• city: Thomasville, Georgia
• rating: 100.0%
• # reviews: 3119

shipping emissyste:

• service: USPS Ground Advantage
• cost: $0.00
• class: Standard
• type: Calculated
• carrier: USPS
• transit: 4-10 Days

payments emissyste:

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

offer emissyste:

• sold: 0
• started: March 23, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• best offers: True

returns emissyste:

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

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