MOPAR 3730949 Intermittent Wiper Motor Drive Crank Arm 78-81 2-SPEED
fits make: Dodge, Mopar.
( Brand: Mopar ), ( Manufacturer Part Number: 3730949 ), ( Items Included: Mounting Hardware ), ( Material: Steel ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front ), ( Type: Wiper Linkage ), ( Attachment Type: Bolt-on ), ( Features: Easy Installation ), ( Universal Fitment: No ), ( Country Of Origin: United States )
Review MOPAR Oem 78-81 Dodge Truck 2-speed Intermittent Wiper Motor Drive Crank Arm
The **Mopar 3730949 78-81 Dodge 2-Speed Intermittent Wiper Motor Drive Crank Arm** is a meticulously engineered, direct-fit replacement component designed specifically for the iconic 1978 through 1981 Dodge vehicles equipped with the original two-speed intermittent wiper system. This high-quality aftermarket part is crafted to restore the precise functionality of the wiper mechanism, ensuring smooth, reliable operation whether in continuous or intermittent modes. The crank arm, a critical linkage between the wiper motor and the wiper arms, is forged from durable, corrosion-resistant materials to withstand the rigors of daily use, including exposure to moisture, temperature fluctuations, and mechanical stress. Its precise fitment guarantees seamless integration with the original wiper motor assembly, maintaining the exact throw and sweep pattern intended by Chrysler s engineering team for these models. Whether restoring a classic muscle car, a rugged pickup truck, or a family sedan, this crank arm delivers the performance and longevity expected from Mopar s reputation for authenticity and dependability. Ideal for both professional mechanics and DIY enthusiasts, it serves as an essential upgrade for those seeking to preserve the integrity of their vehicle s original wiper system while enhancing its overall reliability.
The **Mopar 3730949 78-81 Dodge 2-Speed Intermittent Wiper Motor Drive Crank Arm** is a specific part for older Dodge vehicles, particularly those from the late 1970s to early 1980s. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of Buying This Part**
1. **Direct Fitment for Specific Models**
The part is designed exclusively for 1978 1981 Dodge vehicles equipped with the 2-speed intermittent wiper system. This ensures compatibility without the need for modifications, making installation straightforward for owners of these models.
2. **Reliability and Durability**
Mopar (Chrysler s original equipment manufacturer parts) are known for their quality and longevity. The crank arm is built to withstand regular use, reducing the likelihood of premature failure compared to aftermarket alternatives that may use lower-grade materials.
3. **Ease of Installation**
Since it is an OEM (Original Equipment Manufacturer) part, it is designed to fit seamlessly into the existing wiper motor assembly. This minimizes the need for adjustments or additional tools, making it a hassle-free replacement for those comfortable with basic mechanical work.
4. **Compatibility with Original System**
The part integrates with the original wiring and mechanical linkages of the wiper system, ensuring that the intermittent and low/high-speed functions operate as intended. This avoids potential issues with aftermarket parts that might not sync perfectly with the vehicle s electronics.
5. **Support for Vintage Vehicle Restoration**
For enthusiasts restoring or maintaining classic Dodge vehicles, using an authentic Mopar part preserves the original aesthetic and functionality. This is particularly appealing to collectors who prioritize historical accuracy.
6. **Warranty and Authenticity**
Mopar parts often come with warranties or guarantees, providing peace of mind in case of defects. Additionally, using an OEM part ensures that the component meets the same standards as the original, reducing the risk of performance issues.
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### **Cons of Buying This Part**
1. **Limited Availability and Lead Times**
As a niche part for older vehicles, the 3730949 crank arm may not be as widely stocked as more common automotive components. This could result in longer shipping times or difficulty finding a seller, especially if purchasing from a specialty parts dealer.
2. **Higher Cost Compared to Aftermarket Alternatives**
OEM parts like this Mopar crank arm are typically more expensive than aftermarket equivalents. While the price reflects quality, budget-conscious buyers may opt for cheaper alternatives, though this could compromise longevity or fitment.
3. **Potential for Overkill for Minor Repairs**
If the issue with the wiper system is isolated to a small component (e.g., a worn-out brush or a loose wire), replacing the entire crank arm may be unnecessary. In such cases, a more targeted repair could be more cost-effective.
4. **Compatibility Concerns with Modified Systems**
If the vehicle has undergone modifications such as aftermarket wiper motors or electronic upgrades the OEM crank arm may not integrate perfectly. This could require additional adjustments or the purchase of a compatible aftermarket part.
5. **Difficulty in Verifying Authenticity**
Counterfeit or low-quality Mopar parts can sometimes enter the market. Buyers must ensure they are purchasing from a reputable dealer to avoid receiving a substandard or fake part, which could lead to further issues down the line.
6. **Environmental and Ethical Considerations**
Purchasing a new OEM part for a part that might still function adequately contributes to waste. While this is less of a concern for critical failures, it s worth considering whether a refurbished or salvaged part could be a more sustainable option.
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### **Conclusion**
The **Mopar 3730949 2-Speed Intermittent Wiper Motor Drive Crank Arm** is a high-quality, reliable replacement part for 1978 1981 Dodge vehicles with the specified wiper system. Its primary advantages lie in its direct fitment, durability, and compatibility with the original vehicle components, making it an ideal choice for owners seeking authenticity and performance. However, the part s niche nature, higher cost, and potential overkill for minor repairs are drawbacks that may deter some buyers.
For those restoring or maintaining a classic Dodge with this wiper system, the Mopar part is a strong recommendation due to its reliability and ease of installation. If the budget is a concern or the issue is minor, exploring aftermarket alternatives or refurbished parts could be worth considering. Always verify the seller s reputation to ensure authenticity and quality.
**Final Recommendation:**Purchase the **Mopar 3730949 crank arm** if you need a direct, high-quality replacement for your 1978 1981 Dodge wiper system and are willing to pay a premium for OEM reliability. For less critical repairs or budget constraints, weigh the pros and cons carefully and consider alternatives. Always prioritize purchasing from trusted suppliers to avoid counterfeit or low-quality parts.
Details:
This wiper linkage is designed for easy installation with bolt-on attachment on the front of vehicle. Made in the USA, this part is a perfect fit for those looking to replace worn-out or damaged wiper motor drive crank arm on their Dodge truck from 1978 1981.
part #: 3730949 prices
- $23.25-$89.00
specifications winshielwip:
- for makes: Dodge, Mopar
- brand: Mopar
- mpn: 3730949
- items included: Mounting Hardware
- material: Steel
- vintage part: Yes
- placement on vehicle: Front
- type: Wiper Linkage
- attachment type: Bolt-on
- features: Easy Installation
- universal fitment: No
- country of origin: United States
seller winshielwip:
- rating: 99.8%
- city: Aurora, Illinois
- # reviews: 16491
returns winshielwip:
- policy: Returns Accepted
- time: 30 Days
- paid by: Seller
general winshielwip:
- Exterior Parts Accessories > Wipers Washers > Wiper Linkages, Transmissions Motors
- condition: Used
offer winshielwip:
- availability: In Stock
- options: Ship-to-home
- best offers: True
- started: May 16, 2026
- quantity: 1
- sold: 0
payments winshielwip:
- other
- credit card: Mastercard
- wallet: Paypal
shipping winshielwip:
- transit: 4-10 Days
- carrier: USPS
- service: USPS Ground Advantage
- type: Fixed
- cost: $7.95
- class: Standard
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