MOPAR J8122874 Cylinder Lock Cylinder/lock

( Manufacturer Part Number: J8122874 ), ( Part Type: Cylinder Lock ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included )

Review MOPAR Genuine Cylinder/lock

The **Mopar J8122874 Cylinder/Lock** is a precision-engineered component designed exclusively for Ford vehicles equipped with the iconic **Ford Access Port (FAP) system**, commonly found in models like the **Ford F-Series (F-150, F-250, F-350), Super Duty (F-250 Super Duty, F-350 Super Duty), and certain Lincoln and Mercury trucks** from the late 1990s through the early 2010s. This high-performance cylinder lock is a critical part of the **Ford Access Port fuel injection system**, ensuring secure and reliable operation of the fuel rail assembly by maintaining proper alignment and sealing between the fuel rail and the cylinder head. Crafted from durable **cast aluminum**, this component is engineered to withstand the high pressures and temperatures associated with modern fuel injection systems, providing long-lasting durability and resistance to wear, corrosion, and thermal expansion. The **J8122874** features a **precision-machined internal bore** that interfaces seamlessly with the corresponding fuel rail, preventing leaks and ensuring optimal fuel delivery to the injectors. Its robust design also includes **integrated sealing surfaces** and **threaded mounting points**, allowing for a tight, vibration-resistant fit that minimizes the risk of fuel system malfunctions. Whether replacing a worn-out original part or upgrading an older vehicle s fuel system for improved performance, this Mopar cylinder lock delivers the reliability and compatibility expected from Ford s trusted aftermarket brand. Ideal for both professional mechanics and DIY enthusiasts, the **J8122874** is a straightforward yet essential replacement that helps maintain the integrity of the fuel injection system, contributing to smoother engine operation and reduced emissions. Always ensure proper installation with the correct gaskets and torque specifications to maximize performance and longevity.

### Pros and Cons of buying a Mopar J8122874 Cylinder/Lock Assembly

1. **Direct Fitment** The J8122874 is a genuine Mopar part designed specifically for certain Chrysler, Dodge, and Jeep vehicles, ensuring compatibility without modification.

2. **Reliability** Mopar parts are built to meet or exceed OEM standards, reducing the risk of premature failure compared to aftermarket knockoffs.

3. **Warranty Coverage** Purchasing from an authorized dealer or Mopar-approved retailer often includes a warranty, providing peace of mind against defects.

4. **Ease of Installation** Since it s an OEM part, it should align correctly with factory tolerances, simplifying installation for DIYers or mechanics.

5. **Long-Term Durability** High-quality materials and manufacturing processes contribute to longevity, especially in applications where cylinder locks are critical for safety (e.g., fuel systems, transmission linkages).

6. **Support for Original Equipment** If the part is failing in a vehicle that still has other OEM components, replacing it with a genuine Mopar part helps maintain consistency in performance and reliability.

1. **Higher Cost** Genuine Mopar parts are typically more expensive than aftermarket alternatives, which may be a barrier for budget-conscious buyers.

2. **Limited Availability** Depending on the vehicle model and region, finding the exact part (especially for older or discontinued models) can be challenging, requiring special ordering or sourcing from salvage yards.

3. **Potential Overkill for Some Applications** If the cylinder/lock is only experiencing minor wear or the failure is due to a related component (e.g., a worn seal or misaligned linkage), replacing the entire assembly may be unnecessary, leading to wasted expenditure.

4. **Weight and Bulk** Some Mopar parts are heavier or bulkier than aftermarket versions, which could complicate installation in tight spaces or require additional adjustments.

5. **Depreciation Risk** If the vehicle is older or has high mileage, the cost of the part may not be justified by its remaining useful life, especially if other major components are failing or need replacement soon.

6. **Mixed Quality Perceptions** While Mopar is generally reliable, some users report inconsistencies in quality across different batches or models, though this is less common with newer parts.

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### **Conclusion**

The Mopar J8122874 cylinder/lock assembly is a strong choice for those prioritizing reliability, warranty support, and direct fitment, particularly in safety-critical applications or for vehicles where OEM consistency is important. However, the higher cost and potential over-replacement risks mean it may not be the best option for budget-conscious buyers or cases where the failure is isolated to a smaller component. Aftermarket alternatives can offer cost savings and comparable performance, but they may lack the same level of support or longevity.

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### **Recommendation**

- You need a guaranteed fit and reliability for a critical system (e.g., fuel pump linkage, transmission shift mechanism).

- Your vehicle is relatively new or has high residual value, justifying the premium price.

- You prefer the warranty and support of an OEM part over aftermarket options.

- You re replacing a failed part in a system where other components are still in good condition.

- The part is only experiencing minor wear or the failure is due to a related issue (e.g., a worn gasket or misalignment).

- You re working with a tight budget and can verify the aftermarket part s compatibility and reviews.

- The vehicle is older or has high mileage, and the cost of the Mopar part doesn t align with its remaining value.

- Confirm the exact application (vehicle model/year) to ensure the part number is correct.

- Check for recalls or common issues with the part or related components in your vehicle s model year.

- Compare prices from authorized Mopar dealers, online retailers, and salvage yards to ensure you re getting the best value.

- If unsure, consult a trusted mechanic to assess whether the entire assembly needs replacement or if a partial fix is sufficient.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. In stock orders ship within 24 hours. Parts must be resalable and in the original packaging. Electrical parts are not returnable.

Genuine Mopar Cylinder/Lock J8122874: Parts: BRIGHT.

part #: j8122874 prices

• $19.54-$21.24

specifications carlockiio:

• for makes: Mopar
• mpn: J8122874
• part type: Cylinder Lock
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• parts included: Only Part Reference 0 On The Diagram Is Included

seller carlockiio:

• rating: 99.3%
• city: Richmond, Michigan
• # reviews: 2596

offer carlockiio:

• sold: 0
• availability: In Stock
• started: April 9, 2026
• quantity: 10
• options: Ship-to-home

payments carlockiio:

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

shipping carlockiio:

• service: Standard
• class: Standard
• type: Fixed
• transit: 5-9 Days
• cost: $9.99

returns carlockiio:

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

general carlockiio:

• condition: New
• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware

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