MOPAR 1EG78DX9AA Screw Cover Cap

( Manufacturer Part Number: 1EG78DX9AA ), ( Part Type: Cover Screw Cap ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Dodge ), ( Year: 2015 2016 2017 2018 2019 ), ( Parts Included: Only Part Reference 24 On The Diagram Is Included )

Review MOPAR Genuine Screw Cover Cap fits CHALLENGER 2015–2019

The **Mopar 1EG78DX9AA Screw Cover Cap** is a precision-engineered, high-performance component designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the iconic 1.4L EcoBoost engine, particularly those utilizing the 1EG engine family. This robust, one-piece aluminum cover cap is meticulously crafted to ensure a secure, airtight seal over the engine s intake manifold screw, preventing moisture, debris, and contaminants from infiltrating critical internal components. Engineered with a tight-fitting, threaded design, the cap features a smooth, contoured exterior that not only enhances aerodynamic flow around the engine bay but also minimizes the risk of snagging on surrounding hoses or wiring. Its durable aluminum construction is both lightweight and resistant to corrosion, ensuring long-term reliability even in demanding driving conditions or harsh environments. The cap s precise fitment is further reinforced by a rubber gasket embedded within the threaded interface, providing an additional layer of protection against leaks and maintaining optimal engine performance. Whether installed during original equipment assembly or as a replacement for wear-and-tear, this Mopar part exemplifies the brand s commitment to quality, compatibility, and performance, delivering a seamless integration that aligns with the engineering standards of modern turbocharged gasoline engines.

**Pros and Cons of buying a Mopar 1EG78DX9AA Screw Cover Cap**

The **Mopar 1EG78DX9AA** is a screw cover cap designed for certain Chrysler, Dodge, and Jeep vehicles, particularly those with the 3.6L Pentastar V6 engine. Below is a detailed analysis of its advantages and disadvantages.

---

### **Pros**

1. **OEM Quality and Fit**

The 1EG78DX9AA is an original equipment manufacturer (OEM) part, meaning it is engineered to match the exact specifications of the vehicle s original design. This ensures a precise fit, reducing the risk of leaks or improper sealing compared to aftermarket alternatives that may not align perfectly with the engine bay s layout.

2. **Reliability and Durability**

Mopar parts are known for their robustness and long-term performance. The screw cover cap is typically made from durable materials (such as metal or reinforced plastic) that can withstand engine heat, vibrations, and exposure to fluids without degrading quickly. This reduces the likelihood of premature failure or the need for frequent replacements.

3. **Compatibility with Factory Systems**

The part is designed to integrate seamlessly with the vehicle s factory wiring, sensors, and structural components. For example, some screw cover caps may house wiring harnesses or connectors, and an OEM part ensures these components function as intended without compatibility issues.

4. **Warranty Coverage**

Purchasing directly from Mopar or an authorized dealer often includes warranty protection, which can cover defects in materials or workmanship. This provides peace of mind, especially if the part is critical to engine performance or safety.

5. **Ease of Installation**

As an OEM part, the 1EG78DX9AA is designed to be installed using standard tools and procedures. Unlike aftermarket parts that may require modifications or additional adapters, this part should fit without complications, saving time and labor costs.

6. **Support for Engine Performance**

In some cases, the screw cover cap may play a role in maintaining proper engine bay airflow or protecting sensitive components. An authentic part ensures these functions are preserved, contributing to overall engine health and longevity.

7. **Resale Value**

If you plan to sell or trade in your vehicle in the future, having OEM parts installed can enhance its perceived value. Buyers often prefer vehicles that retain factory components, as they are less likely to encounter compatibility or reliability issues.

---

### **Cons**

1. **Higher Cost Compared to Aftermarket Alternatives**

OEM parts like the 1EG78DX9AA are typically more expensive than generic or third-party aftermarket replacements. The price premium reflects the quality, warranty, and brand reputation, but it may not be justified for owners on a tight budget or those who prioritize cost savings over brand reliability.

2. **Limited Availability Outside Authorized Channels**

While Mopar parts are widely available through dealerships and online retailers, some aftermarket alternatives may offer broader distribution or faster shipping options. This can be inconvenient if you need the part urgently and cannot access it through traditional channels.

3. **Potential for Overkill for Minor Repairs**

If the screw cover cap is damaged or missing due to a minor incident (e.g., a loose bolt or accidental impact), replacing it with an OEM part may feel excessive. In such cases, an aftermarket part that meets the same functional requirements might suffice without the added cost.

4. **No Customization Options**

Unlike some aftermarket parts, OEM screw cover caps do not offer customization in terms of color, material, or design. If aesthetics or specific material preferences are important to you, you may need to explore non-OEM alternatives, though this could compromise fit or performance.

5. **Dependence on Dealer Networks**

Purchasing from a dealership may involve higher prices due to markup and service fees. Online retailers or third-party sellers might offer the same part at a lower cost, but you should verify the seller s reputation to avoid counterfeit or low-quality fakes.

6. **Potential for Stock Issues**

Like all parts, the 1EG78DX9AA may occasionally be out of stock at dealers or distributors, leading to delays. Aftermarket suppliers may have more consistent inventory, though their parts may not always match the OEM standard.

7. **Environmental and Ethical Considerations**

Some consumers prefer to support aftermarket manufacturers or recycled parts to reduce demand for new production. While Mopar is a reputable brand, the environmental impact of producing and disposing of OEM parts may be a concern for eco-conscious buyers.

---

### **Conclusion**

The **Mopar 1EG78DX9AA screw cover cap** is a high-quality, reliable choice for vehicle owners who prioritize OEM specifications, long-term durability, and compatibility with their vehicle s factory systems. Its advantages in fit, performance, and warranty coverage make it an ideal selection for those who value authenticity and want to avoid potential issues with aftermarket alternatives. However, the higher cost and limited customization options may deter budget-conscious buyers or those seeking more affordable solutions.

For most drivers, especially those who maintain their vehicles diligently or plan to keep them long-term, the benefits of an OEM part outweigh the drawbacks. If cost is a major concern, it may be worth comparing aftermarket options that are specifically designed for the 1EG78DX9AA application, ensuring they meet the same standards for fit and function.

---

### **Recommendation**

- You need an authentic, high-quality replacement that matches your vehicle s original specifications.

- You prioritize reliability, warranty coverage, and long-term performance over cost savings.

- You are replacing a damaged or missing part as part of routine maintenance or a repair project where OEM compatibility is critical.

- You plan to sell or trade in your vehicle in the future, as OEM parts can enhance its resale value.

- You are on a tight budget and can find a reputable aftermarket part that is specifically designed for the 1EG78DX9AA application (e.g., from brands like ACDelco, Bosch, or other trusted manufacturers).

- The part is damaged due to a minor issue, and you are willing to accept a slight risk of compatibility or fitment concerns in exchange for lower cost.

- You prefer to support smaller manufacturers or recycled parts for environmental or ethical reasons.

- **Authorized Mopar Dealers or Chrysler/Dodge/Jeep Dealerships:** For guaranteed OEM quality and warranty.

- **Online Retailers (e.g., RockAuto, Amazon, eBay, or specialty auto parts websites):** For convenience and potentially lower prices, but verify seller ratings and part authenticity.

- **Local Auto Parts Stores (e.g., AutoZone, O Reilly, NAPA):** For quick access, though prices may be higher than online options.

Always cross-reference the part number with your vehicle s specifications to ensure compatibility before purchasing. If possible, consult your vehicle s service manual or a trusted mechanic for guidance on whether an OEM or aftermarket part is the best choice for your situation.

Details:

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

part #: 1eg78dx9aa prices

• $8.00-$12.71

specifications otruckbedaccessories:

• for models: Challenger
• for makes: Mopar
• for years: 2015-2019
• mpn: 1eg78dx9aa
• part type: Cover Screw Cap
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Dodge
• year: 2015 2016 2017 2018 2019
• parts included: Only Part Reference 24 On The Diagram Is Included

returns otruckbedaccessories:

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

offer otruckbedaccessories:

• quantity: 3
• availability: In Stock
• sold: 0
• started: April 9, 2026
• options: Ship-to-home

general otruckbedaccessories:

• Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories
• condition: New

payments otruckbedaccessories:

• credit card: Diners-club
• other
• wallet: Paypal

seller otruckbedaccessories:

• rating: 99.3%
• city: Lithonia, Georgia
• # reviews: 705

shipping otruckbedaccessories:

• service: Standard, Expedited
• cost: $0.00
• class: Standard, Expedited
• transit: 5-9 Days
• type: Fixed

Mopar 1EG78DX9AA Is Similar To:

• 200 Mopar Chrysler Genuine Cargo (50% similar) Parts must be resalable and in the original packaging. Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. Black nylon net fastens to tie-down loops help keep loose items secure while maintaining convenient access cargo area. Electrical parts ...(May 1st, 2017)
• 4267045 Mopar Tonneau Cover For (45.1% similar) The part number is. It comes with instructions,and mounting kit,with turn locks. For sale is a its for full size trucks with the 6/1 2' bed. Factory,tonne cover. This type fits over the bed rails...(May 14th, 2017)
• 4271047 Mopar Tonneau Cover End (45.1% similar) Tonne cover end cap package fits model's nos mopar...(July 17th, 2017)
• Mopar Ram 6 1500 Tri-fold 68144686ae 4 Tonneau 2009-2014 Cover (36.5% similar) Cover is in like new condition. For sale is a mopar Teri fold tonne cover. 00HAPPY buying. List price on this cover is 2,560...(August 17th, 2014)
• 82207194 Mopar Genuine Protector-bed Rail (49.4% similar) Electrical parts are not returnable. Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. Parts must be resalable and in the original packaging...(May 1st, 2017)
• 82211054ab Oem Mopar Tonneau Cover (40.5% similar) Est, Mon to Fri...(November 5th, 2014)
• Covers 82211085ab Oem Snapless Mopar Fabric Cover-tonneau Tonneau (28% similar) It was only on the truck about a month. It is a genuine mopar accessory that was installed by the dealer. Very slightly used tonne cover, came on my 05 Dakota quad cab when I purchased it...(August 8th, 2014)
• Mopar Cover Oem 82211297ab Tonneau (35.1% similar) Are not included in the expected delivery dates. Orders shipping outside the continental us. Mon Fri phone ext. Installation fasteners and hardware are not always included. A 20 re stocking fee may apply to some parts...(September 4th, 2014)
• Cover Oem Mopar Tonneau 82211298 (19.4% similar) ...(January 9th, 2015)
• Kit Cover Mopar Oem Tonneau 82211301 Rail (22.2% similar) Electrical parts are not returnable...(December 24th, 2014)
• 82212984 Mopar Tonneau Cover (44.1% similar) Durable dual-wall construction incl an inner liner outer to help prevent cracks. 5 million in mopar parts and have access to over 20 available for same day shipping. This cover raises w the help of two gas-assisted dampers. Tonne features a built-in tailgate lock for added security. Other ...(May 20th, 2017)