MOPAR 4578051AC Engine Mount Bracket Left

( Manufacturer Part Number: 4578051AC ), ( Part Type: Bracket Engine Mount ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Chrysler ), ( Year: 2005 2006 2007 2008 2009 2010 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( Replaces Part Number: 4578051ab )

Review MOPAR Genuine Engine Mount Bracket Left fits 2005–2010

The **Mopar 4578051AC Engine Mount Bracket (Left Side)** is a precision-engineered component designed specifically for high-performance and heavy-duty applications within Mopar-equipped vehicles, particularly those featuring the iconic Hemi V8 engines. This robust bracket serves as a critical structural link between the engine assembly and the vehicle s chassis, ensuring optimal alignment, stability, and vibration dampening during operation. Crafted from high-strength steel, the bracket is built to withstand the intense forces generated by high-revving engines, aggressive driving conditions, and the demands of towing or hauling heavy loads. Its unique design incorporates reinforced gussets and strategically placed mounting points to distribute stress evenly, preventing premature wear or failure in critical components like the engine block, transmission, or suspension. The bracket s left-side orientation ensures seamless integration with the engine s left-hand mounting system, allowing for precise fitment and secure attachment to the vehicle s firewall or crossmember. Whether installed in a classic muscle car, a modern performance truck, or a high-output racing application, this bracket is engineered to maintain engine integrity, reduce unwanted movement, and enhance overall drivability. Built to meet or exceed OEM specifications, it is an essential upgrade for enthusiasts seeking to reinforce their powertrain setup, improve reliability, or restore factory-level durability in restored vehicles.

### **Pros and Cons of buying a Mopar 4578051AC Engine Mount Bracket (Left)**

1. **Direct Fitment** This part is designed specifically for certain Mopar applications, ensuring compatibility without modifications. It should align perfectly with the engine mount system in your vehicle, reducing the risk of installation errors.

2. **Durability** Mopar (Chrysler) parts are generally built to meet or exceed OEM standards, meaning they are likely to be sturdy and long-lasting, especially if the vehicle is well-maintained.

3. **Ease of Installation** Since it s a direct replacement, replacing the bracket should be straightforward if you have basic mechanical skills or access to a mechanic. No major modifications to the engine bay are typically required.

4. **Reliability** Using an OEM or high-quality aftermarket part like this one helps prevent premature wear or failure in the engine mount system, which can contribute to drivability issues or even engine damage if a mount fails completely.

5. **Warranty Coverage** If purchased from a reputable dealer or online retailer, this part may come with a warranty, providing some assurance against defects in materials or workmanship.

6. **Prevents Vibration Issues** A failing or worn engine mount bracket can lead to excessive engine vibration, which can affect ride comfort and potentially damage other components over time. Replacing it proactively can mitigate these problems.

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1. **Cost** As an OEM or high-quality aftermarket part, this bracket may be more expensive than generic or lower-end aftermarket alternatives. Depending on your budget, this could be a significant outlay, especially if multiple mounts need replacement.

2. **Limited Availability** Mopar parts, while reliable, may not always be in stock at local auto parts stores. You might need to order it online, which could involve shipping delays or additional fees.

3. **Potential for Counterfeit Parts** If purchasing from an untrusted seller (especially online marketplaces), there s a risk of receiving a counterfeit or low-quality replica. Always buy from authorized dealers or well-reviewed suppliers to avoid this.

4. **Installation Challenges** While the part is designed for direct fitment, some vehicles may have tight spaces or unique mounting configurations that make installation difficult, especially for inexperienced DIYers. This might require additional tools or professional help.

5. **Mixed Reviews on Aftermarket Alternatives** While Mopar parts are reliable, some aftermarket brands offer similar parts at a lower cost with comparable quality. If you re on a tight budget, you might consider alternatives, though you should research reviews carefully to ensure they meet your needs.

6. **Wear and Tear Over Time** Even high-quality parts will eventually wear out, especially if the vehicle is driven aggressively or in harsh conditions. This bracket may need replacement again in the future, depending on usage and maintenance.

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The **Mopar 4578051AC engine mount bracket (left)** is a solid choice if you prioritize reliability, direct fitment, and long-term durability. It s ideal for those who want to avoid potential issues with generic aftermarket parts or counterfeit products. However, the higher cost and potential installation challenges may make it less appealing if you re working with a limited budget or lack mechanical experience.

If you re confident in your ability to install it correctly and can afford the upfront cost, this part is a safe and effective solution. For those looking to save money, thoroughly researching aftermarket alternatives with strong reviews could be a viable alternative, provided they meet your vehicle s specifications.

- You value OEM-quality components and want to avoid compatibility issues.

- You re comfortable with installation or have access to a trusted mechanic.

- Your budget allows for the higher cost, and you want long-term reliability.

- You re on a tight budget and can find a well-reviewed aftermarket part with similar specifications.

- You re unsure about installation and prefer to have a professional handle it (though this may increase labor costs).

- You re purchasing from a reputable seller to avoid counterfeit parts.

Ultimately, the best choice depends on your priorities whether that s cost savings, ease of installation, or long-term reliability. Always verify the part number and application fitment before purchasing to ensure it s the right match for your vehicle.

Details:

Electrical parts are not returnable. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Parts must be resalable and in the original packaging. Genuine Mopar Parts.

part #: 4578051ac prices

• $98.53-$164.15

specifications engimou:

• for makes: Mopar
• for years: 2005-2010
• mpn: 4578051ac
• part type: Bracket Engine Mount
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Chrysler
• year: 2005 2006 2007 2008 2009 2010
• parts included: Only Part Reference 1 On The Diagram Is Included
• replaces part number: 4578051ab

shipping engimou:

• cost: $9.99
• type: Fixed
• class: Standard
• service: Standard
• transit: 6-12 Days

payments engimou:

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

general engimou:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts
• condition: New

offer engimou:

• sold: 0
• quantity: 3
• availability: In Stock
• options: Ship-to-home
• started: May 20, 2026

returns engimou:

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

seller engimou:

• rating: 100.0%
• city: Danville, Virginia
• # reviews: 13

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