GM 1383960 Radiator Cushion

( Brand: Gm ), ( Manufacturer Part Number: 1383960 ), ( Part Type: Radiator Cushion ), ( Manufacturer Warranty: No ), ( Surface Finish: Rubber ), ( Country Of Origin: United States )

Review GM Buick Radiator Cushion fits SKYLARK GS350 GS400 1968–1969

The **GM 1383960 Radiator Cushion** is a meticulously engineered, high-performance underhood component designed exclusively for the **1968 1969 Buick Skylark GS350 and GS400** models, ensuring optimal cooling system efficiency and longevity for these legendary muscle cars. Crafted from durable, heat-resistant materials, this radiator cushion serves as a critical barrier between the radiator and the engine bay, preventing debris, road grime, and moisture from infiltrating the cooling system while also absorbing vibrations to minimize stress on the radiator and hoses. The cushion s precise fitment is tailored to the unique underhood architecture of the **L84 425-cubic-inch V8** and **L78 400-cubic-inch V8** engines found in these high-performance Skylarks, accommodating the radiator s specific contours and mounting points without sagging or shifting under high-speed driving conditions. Beyond its functional role, this part plays a subtle yet vital part in maintaining the aesthetic integrity of the engine bay, as its clean, streamlined design complements the aggressive, performance-oriented styling of the GS350 and GS400. Whether restoring a classic Skylark to its original showroom condition or upgrading an existing cooling system for enhanced reliability, the **GM 1383960 Radiator Cushion** is an essential component for preserving the cooling system s performance and protecting against premature wear ensuring that every mile driven in these iconic muscle cars is met with the same power and precision they were designed for.

### **Pros and Cons of Buying a 1968-1969 Buick Skylark GS350/GS400 Radiator Cushion (GM Part #1383960)**

1. **Compatibility and Fit** The radiator cushion (also called a radiator support or radiator bracket) is designed specifically for the 1968-1969 Buick Skylark GS350 and GS400 models. This ensures a proper fit without modifications, preventing misalignment or damage to the radiator or engine bay components.

2. **Prevents Radiator Movement** The cushion stabilizes the radiator, reducing vibrations and rattling, especially during acceleration, braking, or rough road conditions. This helps prevent fluid leaks and potential radiator damage over time.

3. **Improves Cooling Efficiency** A securely mounted radiator maintains proper airflow, ensuring optimal cooling performance. Without this cushion, the radiator could shift, obstructing airflow and leading to overheating.

4. **Prevents Hose and Connection Strain** The cushion reduces stress on radiator hoses and connections, lowering the risk of leaks or premature wear. This is particularly important in older vehicles where rubber hoses degrade over time.

5. **Easy Installation** The part is relatively straightforward to install, typically requiring only basic tools. Most owners or mechanics can replace it without professional assistance, saving labor costs.

6. **Cost-Effective Maintenance** Replacing a worn or missing radiator cushion is far cheaper than repairing radiator damage caused by movement. It extends the life of the cooling system components.

7. **Availability of Replacement Parts** As a classic Buick model, replacement parts like this cushion are still available through GM dealers, aftermarket suppliers, and online marketplaces. This ensures long-term availability for maintenance.

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1. **Potential for Counterfeit or Low-Quality Parts** Some aftermarket or eBay sellers may offer replicas or substandard replacements. Buyers should verify the authenticity of the part (e.g., checking for proper GM markings or purchasing from reputable sources).

2. **Rust and Corrosion Risk** Older vehicles, especially those exposed to harsh weather, may have rusted mounting points or frame areas where the cushion attaches. If the surrounding metal is compromised, the cushion alone won t solve the underlying structural issue.

3. **Wear on Adjacent Components** If the cushion is installed incorrectly or is of poor quality, it could cause additional stress on nearby parts, such as the radiator itself, fan shroud, or engine mounts.

4. **Limited Longevity of the Part** While the cushion itself is durable, rubber or plastic components can degrade over time, especially under extreme heat or cold. Regular inspection is recommended.

5. **Installation Challenges in Modified Vehicles** If the vehicle has aftermarket modifications (e.g., lowered suspension, custom radiator mounts, or engine swaps), the original radiator cushion may not fit correctly. Custom adjustments may be needed.

6. **Cost of Replacement vs. Radiator Upgrade** If the radiator is already old or damaged, replacing just the cushion may not be a long-term solution. In some cases, upgrading to a modern, high-performance radiator might be more cost-effective in the long run.

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The **GM 1383960 radiator cushion for the 1968-1969 Buick Skylark GS350/GS400** is a **practical and necessary upgrade** for maintaining cooling system integrity. Its primary benefits preventing radiator movement, improving cooling efficiency, and reducing leaks far outweigh the minor drawbacks, particularly if sourced from a trusted supplier. The part is **affordable, easy to install, and critical for preserving the vehicle s performance and longevity**.

However, buyers should **inspect the surrounding frame and mounting points for rust or damage** before installation, as these issues could negate the cushion s effectiveness. Additionally, if the radiator or cooling system is already degraded, addressing those components simultaneously may be more prudent.

- **Buy from a reputable source** (e.g., GM dealer, trusted aftermarket supplier, or a verified online retailer) to ensure authenticity and quality.

- **Inspect the installation area** for rust or structural weaknesses before fitting the cushion.

- **Combine this purchase with a radiator flush and hose inspection** to ensure the entire cooling system is in good condition.

- **Consider upgrading to a modern radiator** if the original is old or prone to leaks, as this could provide better long-term reliability.

- **Install the cushion promptly** if the current one is missing or damaged, as radiator movement can lead to costly repairs.

For most owners of these classic Buicks, **replacing the radiator cushion is a wise preventive maintenance step** that extends the life of the cooling system and avoids more significant issues down the road.

Details:

See pictures. 1968-1969 Buick Skylark GS350 GS400 radiator cushion 1383960: Excellent used mounting bracket cushion, GM part number 1383960.This fits 1968 - 1969 Special, Skylark, GS350, and Sport Wagon, is either on top of the radiator, or underneath it all 4 positions.Sorry, only have one these cushions, not a full set 4.Excellent still nice pliable, hardened up.

part #: 1383960 price

• $12.99

specifications ocoosys:

• for models: Gs350, Gs400, Skylark
• for makes: Buick
• for years: 1968-1969
• brand: Gm
• mpn: 1383960
• part type: Radiator Cushion
• manufacturer warranty: No
• surface finish: Rubber
• country of origin: United States

general ocoosys:

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

offer ocoosys:

• options: Ship-to-home
• started: May 30, 2026
• quantity: 1
• sold: 0
• availability: In Stock

seller ocoosys:

• rating: 100.0%
• city: Toledo, Ohio
• # reviews: 19244

payments ocoosys:

• wallet: Google-pay
• other
• credit card: Diners-club

shipping ocoosys:

• transit: 17-28 Days
• class: Standard
• cost: $10.60
• type: Calculated
• carrier: USPS
• service: USPS First Class

returns ocoosys:

• policy: No Returns

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