MOPAR 55112378AI Rear Right Door Belt Outer Weatherstrip

( Manufacturer Part Number: 55112378AI ), ( Bundle Listing: No ), ( Color: Black ), ( Features: Easy Installation ), ( Fitment Type: Direct Replacement ), ( Material: Rubber ), ( Placement On Vehicle: Rear, Right ), ( Type: Weatherstrip )

Review MOPAR Cab Rear Right Side Door Belt Outer Weatherstrip Oem fits RAM CREW 1500 2011–2018

The **Mopar 55112378AI Rear Right Door Belt Outer Weatherstrip** is a precision-engineered rubber sealing component designed exclusively for the **2011 through 2018 Dodge Ram 1500 and Ram Crew Cab models**, ensuring a tight, weather-resistant barrier between the door frame and the vehicle s body. Crafted from high-quality, durable rubber with a reinforced silicone core, this weatherstrip is engineered to withstand the rigors of daily driving, including exposure to UV rays, temperature fluctuations, and road debris, while maintaining its elasticity and resilience over time. Its sleek, contoured design follows the exact curvature of the rear right door belt, providing a seamless seal that blocks out wind, rain, dust, and road noise, thereby enhancing both comfort and fuel efficiency. The weatherstrip features a robust adhesive backing for secure installation, ensuring it stays firmly in place even after repeated door openings and closings. Whether navigating rough terrain, driving through heavy rain, or enduring harsh winter conditions, this weatherstrip acts as a reliable defense against moisture ingress, preventing rust and corrosion that can compromise the structural integrity of the door frame. Ideal for both original equipment replacement and customization projects, the Mopar 55112378AI is a must-have accessory for Ram owners seeking to preserve their vehicle s value, performance, and long-term durability.

### **Pros and Cons of buying a Mopar 55112378AI Rear Door Belt Outer Weatherstrip (2011 2018 Ram 1500 Crew Cab)**

1. **Direct Fitment** This part is specifically designed for the 2011 2018 Ram 1500 Crew Cab, ensuring compatibility without modifications. It will align perfectly with the door frame and belt mechanism, reducing the risk of improper installation.

2. **OEM Quality** As a Mopar genuine part, it meets Ford s original equipment manufacturer (OEM) standards, meaning it should match the durability and performance of the factory-installed weatherstrip. This can help maintain the vehicle s resale value and prevent premature wear.

3. **Sealant and Weather Protection** A functioning weatherstrip prevents water, dust, and debris from entering the cabin, protecting interior components (e.g., door panels, wiring harnesses) from corrosion and damage. This is particularly important for vehicles frequently driven in wet or dusty conditions.

4. **Aesthetic Consistency** The part will match the original design of your vehicle, avoiding a mismatched or "aftermarket" look that some generic replacements may have.

5. **Ease of Installation** The weatherstrip is designed to be a straightforward replacement, requiring only basic tools (e.g., trim removal tools, pry bar). Many DIYers can install it without professional assistance, saving labor costs.

6. **Prevents Further Damage** If the existing weatherstrip is cracked, torn, or degraded, replacing it early can prevent more extensive issues, such as rusted door frames, malfunctioning door locks, or water damage to the headliner or carpet.

7. **Warranty Coverage** Mopar parts often come with a warranty (typically 12 60 months, depending on the dealer), providing peace of mind in case of defects or premature failure.

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1. **Cost** Mopar OEM parts are generally more expensive than aftermarket alternatives. While this ensures quality, the price may be a barrier for budget-conscious buyers. Prices for this specific weatherstrip can range from **$30 $60**, depending on the retailer and whether it s new or refurbished.

2. **Limited Availability** OEM parts may not be as widely stocked as aftermarket options, requiring advance ordering or purchasing from authorized Mopar dealers or online marketplaces (e.g., RockAuto, MoparDirect). This could lead to delays if the part is backordered.

3. **Potential Overkill for Minor Issues** If the weatherstrip is only slightly damaged (e.g., minor cracks or peeling), some drivers might opt for a cheaper aftermarket replacement or even a DIY repair kit (e.g., weatherstrip adhesive or sealant). In such cases, the full OEM replacement may be unnecessary.

4. **Installation Challenges** While the part is designed for easy installation, some users may encounter difficulties if they lack experience with vehicle trim work. Improper handling could damage the door panel or adjacent components (e.g., window regulators, belt mechanisms).

5. **Environmental Concerns** As with all automotive parts, there is an environmental impact from manufacturing, shipping, and disposal. Buyers who prioritize sustainability might consider aftermarket brands with eco-friendly practices or recycled materials (though these are less common for weatherstrips).

6. **Mixed Reviews on Durability** While Mopar parts are generally reliable, some owners report that OEM weatherstrips may not last as long as expected, especially in extreme climates (e.g., frequent freeze-thaw cycles or high humidity). Aftermarket brands sometimes offer warranties or better long-term performance in such cases.

7. **Potential for Counterfeit Parts** Purchasing from unauthorized sellers (e.g., eBay, Craigslist, or unscrupulous online retailers) carries a risk of receiving counterfeit or low-quality parts. Always buy from reputable sources to avoid this issue.

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### **Conclusion**

The **Mopar 55112378AI rear door belt outer weatherstrip** is a high-quality, direct-fit replacement that offers reliability, durability, and aesthetic consistency for your 2011 2018 Ram 1500 Crew Cab. Its OEM status ensures compatibility and peace of mind, making it an ideal choice if you prioritize long-term performance and vehicle integrity. However, the higher cost and potential availability issues may deter budget-conscious buyers or those seeking quicker, cheaper alternatives.

For most drivers, the **pros outweigh the cons**, especially if the weatherstrip is significantly worn or the vehicle is used frequently in harsh conditions. The investment in an OEM part is justified by its potential to prevent costly water damage, maintain resale value, and ensure a proper seal.

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### **Recommendation**

- You want the most reliable, long-lasting solution with OEM quality.

- Your current weatherstrip is severely damaged or failing.

- You value the vehicle s resale value and want to avoid potential issues down the road.

- You re comfortable purchasing from an authorized Mopar dealer or trusted online retailer (e.g., MoparDirect, RockAuto).

- You re on a tight budget and the weatherstrip is only mildly damaged.

- You re willing to research and purchase a high-quality aftermarket brand (e.g., Duralast, Gates, or Dayco) with good reviews.

- You re confident in your ability to install the part correctly and are open to a slightly shorter lifespan.

- **Avoid generic or unknown brands** unless you ve verified their quality through reviews or professional recommendations, as inferior materials can lead to premature failure.

**Final Verdict:** For most Ram 1500 owners, the **Mopar 55112378AI is the best choice** due to its reliability and fitment. However, weigh the cost against your specific needs before purchasing. If you re unsure, consult with a local mechanic or dealership for advice tailored to your vehicle s condition.

Details:

BODY TYPE: CREW CAB PICKUP 4-DOOR. DRIVE TYPE: FOUR WHEEL 4WD / 4X4. TRANSMISSION: 8-SPEED AUTOMATIC ZF / 8HP70. ENGINE: 5.7L V8 HEMI MDS VVT EZH GAS.

part #: 55112378ai prices

• $42.95-$80.59

specifications vintagwinde:

• for models: 1500, Ram, Crew
• for makes: Mopar
• for years: 2011-2018
• mpn: 55112378ai
• bundle listing: No
• color: Black
• features: Easy Installation
• fitment type: Direct Replacement
• material: Rubber
• placement on vehicle: Rear, Right
• type: Weatherstrip

offer vintagwinde:

• availability: In Stock
• sold: 0
• best offers: True
• started: February 4, 2026
• options: Ship-to-home
• quantity: 1

general vintagwinde:

• condition: Used
• Exterior Parts Accessories > Glass Window Parts > Window Seals, Gaskets Trims

shipping vintagwinde:

• type: Fixed
• cost: $0.00
• service: Standard
• class: Standard
• transit: 3-7 Days

returns vintagwinde:

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

seller vintagwinde:

• rating: 99.8%
• # reviews: 41917
• city: Kingsley, Michigan

payments vintagwinde:

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

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