MOPAR 68420991AB Jumper Wiring

( Manufacturer Part Number: 68420991AB ), ( Part Type: Wiring ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Make: Chrysler ), ( Year: 2019 2020 ), ( Parts Included: Only Part Reference 15 On The Diagram Is Included ), ( Replaces Part Number: 68420991aa )

Review MOPAR Genuine Jumper Wiring fits 2019–2020

The **Mopar 68420991AB Jumper Wiring Harness** is a high-quality, factory-spec replacement part designed to restore proper electrical connectivity in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the iconic 318, 360, or 400 cubic-inch small-block V8 engines. This meticulously engineered harness serves as a critical component in the engine s ignition system, ensuring seamless communication between the distributor, ignition coil, and other essential electrical components. Crafted from durable, heat-resistant materials, the 68420991AB is built to withstand the demanding conditions of high-performance applications, offering reliable performance under heavy loads and extreme temperatures. The harness features a robust, tinned copper wiring configuration, optimized for minimal resistance and maximum signal integrity, which helps prevent voltage drop and ensures consistent spark generation for optimal engine efficiency. Whether used in classic muscle cars, restored vintage vehicles, or modern performance builds, this harness is a direct-fit solution that maintains the original vehicle s electrical specifications, reducing the risk of misfires, poor starting, or electrical failures. Its precise wiring layout and secure terminal connections guarantee a clean, interference-free signal path, making it an indispensable upgrade for enthusiasts seeking to restore or enhance the electrical reliability of their Mopar-powered engines.

**Pros and Cons of buying a Mopar 68420991AB Jumper Wiring Harness**

The **Mopar 68420991AB** is a replacement jumper wiring harness designed for certain Chrysler, Dodge, and Jeep vehicles, particularly those with a 4.7L or 5.2L engine (e.g., 2001 2005 300M, 2002 2004 Durango, or 2002 2005 Grand Cherokee). Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Direct OEM Replacement**

The harness is manufactured to match the original equipment manufacturer (OEM) specifications, ensuring compatibility with the vehicle s electrical system. This reduces the risk of electrical issues caused by mismatched wiring or connectors.

2. **Improved Reliability**

Many aftermarket harnesses are prone to poor soldering, loose connections, or incorrect pinouts, leading to intermittent electrical problems. The Mopar part is built to a higher standard, reducing the likelihood of failure over time.

3. **Warranty Coverage**

Mopar parts often come with a manufacturer s warranty (typically 1 2 years), providing some recourse if the harness fails prematurely due to defects. This can be reassuring compared to generic aftermarket options with no warranty.

4. **Easier Installation**

The harness is designed to fit seamlessly into the vehicle s wiring layout, often requiring minimal modifications. It includes pre-wired connectors that plug directly into the factory harness, simplifying the installation process compared to custom wiring jobs.

5. **Compatibility with Common Issues**

Many vehicles with this harness experience problems like **no-start conditions, intermittent power loss, or sensor malfunctions** due to damaged or corroded wiring. Replacing the harness can resolve these issues without requiring extensive troubleshooting.

6. **Support for Aftermarket Modifications**

If you ve installed aftermarket components (e.g., performance chips, LED bulbs, or auxiliary relays), a fresh harness ensures clean power delivery and reduces the risk of ground loops or voltage drops.

7. **Long-Term Cost Savings**

While the upfront cost is higher than some aftermarket alternatives, replacing a faulty harness prevents recurring electrical problems that could lead to more expensive repairs (e.g., damaged sensors, ECU issues, or starter failures).

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### **Cons**

1. **Higher Cost**

The Mopar 68420991AB is more expensive than generic aftermarket harnesses (often $150 $300 depending on the retailer). This can be a significant investment if the issue is isolated to a single wire or connector rather than the entire harness.

2. **Limited Availability**

Mopar parts may not be stocked at every auto parts store, requiring online ordering or special ordering from dealerships or specialty retailers. This can add shipping time and potential extra fees.

3. **Potential Overkill for Minor Issues**

If the electrical problem is caused by a single bad wire, connector, or ground, replacing the entire harness may be unnecessary. A targeted repair (e.g., replacing a corroded connector or splicing a broken wire) could be a cheaper solution.

4. **Installation Complexity**

While generally straightforward, some vehicles may require additional steps (e.g., removing panels, disconnecting sensors, or routing wires carefully). DIYers with limited electrical experience may struggle, potentially leading to mistakes or improper connections.

5. **Compatibility Confusion**

The **68420991AB** is not a universal part it s specific to certain model years and trims. Purchasing the wrong harness (e.g., for a 5.7L engine or a different vehicle) will not work, requiring research to ensure the correct fit.

6. **No Guarantee of All Issues Being Resolved**

While the harness itself may be the culprit, other factors (e.g., a failing alternator, bad ground, or software glitch) could still cause problems. Replacing the harness alone may not fix all electrical symptoms.

7. **Environmental Exposure Risks**

If the vehicle has been exposed to moisture, road salt, or extreme heat, the new harness may still fail if the underlying electrical system is compromised. Proper corrosion prevention (e.g., dielectric grease on connectors) is recommended.

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### **Conclusion**

The **Mopar 68420991AB jumper wiring harness** is a high-quality, reliable solution for vehicles experiencing electrical gremlins tied to the harness itself. Its OEM-level construction, warranty, and compatibility make it a strong choice for those who want a durable fix without extensive troubleshooting. However, the cost and potential overkill for minor issues mean it may not be the best option for every situation.

If your vehicle is suffering from **intermittent no-starts, sensor failures, or power loss**, and you ve ruled out other causes (e.g., battery, alternator, or ground issues), the Mopar harness is a **recommended investment**. For simpler or less severe problems, a targeted repair or a lower-cost aftermarket harness might suffice.

- You ve confirmed the harness is the source of the electrical issue.

- You want a long-term, reliable fix with warranty support.

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

- The problem is isolated to a single wire or connector.

- You re on a tight budget and can diagnose the exact failure point.

- You re unsure whether the harness is the root cause (consult an electrician or scan for codes first).

Always verify the part number matches your vehicle s exact application before purchasing.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Subaru, Ram, Dodge, Chrysler, Jeep, Toyota, Scion, Mazda, Volkswagen, or sprout recommended parts are an important part of maintaining your vehicles optimum performance. Parts must be resalable and in the original packaging. Electrical parts are not returnable.

part #: 68420991ab prices

• $14.49-$16.00

specifications emissyste:

• for makes: Mopar
• for years: 2019-2020
• mpn: 68420991ab
• part type: Wiring
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• make: Chrysler
• year: 2019 2020
• parts included: Only Part Reference 15 On The Diagram Is Included
• replaces part number: 68420991aa

offer emissyste:

• started: March 7, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

returns emissyste:

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

shipping emissyste:

• type: Fixed
• cost: $10.99
• class: Standard
• transit: 5-11 Days
• service: Standard

seller emissyste:

• city: Brunswick, Ohio
• # reviews: 27458
• rating: 99.3%

payments emissyste:

• wallet: Google-pay
• credit card: Mastercard
• other

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