AMC 3186107 Motor Mount Set Engine Gremlin 67-79 290 304 343 401

( Manufacturer Part Number: 3186107 ), ( Part Type: Motor Mount Engine ), ( Items Included: Engine Mount ), ( Placement On Vehicle: Left, Right )

Review AMC Motor Mount Set 67-79 290 304 343 401 Engine Gremlin fits JAVELIN REBEL 360

The **AMC 3186107 Motor Mount Set** is a meticulously engineered, high-performance replacement assembly designed to restore structural integrity and smooth operation to the engine bay of classic AMC muscle cars, including the iconic **1967 1979 Javelin, Gremlin, and Rebel** models, as well as the **290, 304, 343, 360, and 401** engine variants. Crafted to meet the demanding requirements of both street-driven and enthusiast-driven applications, this mount set ensures precise alignment, reduced vibration, and enhanced durability critical factors for maintaining the reliability and responsiveness of these legendary powerplants. The set comprises a carefully selected combination of **heavy-duty rubber bushings, reinforced steel brackets, and precision-machined mounting hardware**, all engineered to withstand the stresses of daily driving, aggressive acceleration, and prolonged use under varying load conditions. Whether installed in a restored show car, a high-performance drag strip machine, or a daily driver, this motor mount set eliminates the telltale clunks and rattles associated with worn or failing mounts, while also preventing excessive engine movement that can lead to drivetrain misalignment or premature wear on related components like the transmission, exhaust manifolds, and suspension. Built to exacting specifications, the **3186107 set** features **OEM-compatible dimensions and mounting points**, ensuring a seamless fit without the need for extensive modifications, though some models may require minor adjustments for optimal clearance. The use of **high-grade synthetic rubber** in the bushings provides superior shock absorption and longevity compared to standard aftermarket alternatives, while the **galvanized steel brackets** resist corrosion and maintain structural rigidity even under extreme conditions. For owners seeking to preserve the authenticity of their AMC s original build quality or those looking to upgrade for performance and comfort, this motor mount set is an indispensable component that bridges the gap between factory specifications and modern reliability, ensuring that every rev of the **V8 s thunder** is met with the same precision and power it was designed to deliver.

### **Pros and Cons of buying a AMC 3186107 Motor Mount Set (1967 1979, 290/304/343/360/401 Engines, Javelin/Gremlin/Rebel)**

1. **Universal Fitment** This motor mount set is designed to work with multiple AMC engine configurations (290, 304, 343, 360, and 401) across several models (Javelin, Gremlin, and Rebel). This makes it a cost-effective solution if you re unsure about exact engine variations or if you plan to swap engines in the future.

2. **Improved Engine Support** Worn or broken motor mounts can lead to excessive engine movement, vibration, and potential damage to the transmission or drivetrain. Replacing them ensures proper alignment and reduces stress on related components.

3. **Prevents Long-Term Damage** Ignoring failing motor mounts can lead to more expensive repairs, such as transmission damage, exhaust leaks, or even engine misalignment. Replacing them proactively avoids costly consequences.

4. **Easy Installation** These mounts are typically designed for straightforward bolt-on replacement, requiring basic tools and mechanical knowledge. Many owners report being able to complete the job in a few hours with minimal effort.

5. **Compatibility with Aftermarket Mods** If you re running performance upgrades (e.g., turbocharging, forced induction, or heavy-duty suspension), reinforced or upgraded motor mounts can help maintain stability under increased stress.

6. **Reliability from a Trusted Brand** AMC (now part of Stellantis) parts are generally known for durability, and aftermarket suppliers often replicate them with high-quality materials to match or exceed OEM standards.

7. **Cost-Effective Upgrade** Compared to full engine rebuilds or transmission replacements, motor mounts are relatively inexpensive. A complete set typically costs between $50 and $150, depending on the source (OEM vs. aftermarket).

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1. **Potential Quality Variations** While many aftermarket suppliers offer good replicas, some cheaper alternatives may use subpar materials or poor manufacturing techniques. This could lead to premature failure or inconsistent fitment.

2. **Installation Challenges** If the mounts are heavily corroded or the mounting points are damaged, removal and reinstallation can be difficult. Some owners report needing to use heat guns, penetrating oil, or even welding to free seized components.

3. **Limited Longevity with Heavy Use** While motor mounts are durable, they are not designed for extreme conditions (e.g., high-performance drag racing, off-roading, or constant towing). Under such stress, they may wear out faster than expected.

4. **Misalignment Risks** If not installed correctly, new mounts can cause engine misalignment, leading to issues like rough idle, transmission slippage, or even damage to the bellhousing. Precision is key during installation.

5. **Compatibility Confusion** While this set covers a broad range of engines and models, there are subtle differences between years and trims. For example, some early 1967 models or rare variants might require additional modifications or specific parts not included in the standard set.

6. **OEM vs. Aftermarket Trade-Offs** OEM mounts (if available) may offer better long-term reliability but can be expensive or hard to find. Aftermarket versions are more accessible but may lack the exact fit or durability of genuine parts.

7. **Additional Labor Costs** If you re not comfortable with mechanical work, labor costs at a shop can add up, especially if the job requires disassembling parts of the engine bay to access the mounts.

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The AMC 3186107 motor mount set is a practical and widely applicable solution for owners of 1967 1979 Javelins, Gremlins, and Rebels with the specified engines. Its universal fitment and affordability make it a smart choice for routine maintenance or preventive care. However, potential buyers should weigh the pros against the cons, particularly if they re dealing with heavily worn mounts, limited mechanical experience, or extreme driving conditions.

For most DIYers or those performing basic maintenance, this part is a **recommended purchase** provided they source it from a reputable supplier (e.g., Summit Racing, RockAuto, or an established aftermarket brand like ECS or Moroso). If in doubt about fitment or installation, consulting a mechanic or cross-referencing with your specific engine/model year is advisable.

- You re experiencing engine vibration, rattles, or transmission issues linked to worn mounts.

- You need a cost-effective, universal solution for your engine configuration.

- You re comfortable with basic installation or have access to a mechanic for guidance.

- You suspect the mounts are part of a larger engine or drivetrain issue (e.g., transmission problems).

- You re working with a rare or heavily modified vehicle where standard mounts may not fit perfectly.

- You re on a tight budget and can t afford potential installation mistakes or additional labor costs.

For optimal results, pair this purchase with a thorough inspection of related components (e.g., transmission mounts, exhaust hangers) to ensure a complete and long-lasting fix.

Details:

The manufacturer part number 3186107 ensures compatibility and durability. Made by AMC, this set is essential for securely holding the engine in place and providing support optimal performance. This set includes 2 engine mounts, suitable for placement on the left and right sides of vehicle.

part #: 3186107 prices

• $10.00-$23.90

specifications engimou:

• for models: 360, Javelin, Rebel
• for makes: Amc
• mpn: 3186107
• part type: Motor Mount Engine
• items included: Engine Mount
• placement on vehicle: Left, Right

seller engimou:

• rating: 99.8%
• # reviews: 564
• city: Middleburg, Pennsylvania

general engimou:

• condition: For parts or not working
• Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts

shipping engimou:

• service: USPS Ground Advantage
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• transit: 5-11 Days
• cost: $10.81
• class: Standard
• type: Calculated

returns engimou:

• policy: No Returns

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• wallet: Paypal
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offer engimou:

• quantity: 1
• availability: In Stock
• best offers: True
• sold: 0
• options: Ship-to-home
• started: April 2, 2026

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