CHRYSLER/MOPAR 4378172 Nos Door Lock Cylinder

( Brand: Chrysler/mopar ), ( Manufacturer Part Number: 4378172 ), ( Type: Door Lock ), ( Manufacturer Warranty: No ), ( Location: Vp360 )

Review CHRYSLER/MOPAR Nos Door lock Cylinder

The **Chrysler/Mopar 4378172 NO-S (No Service Required) Door Lock Cylinder** is a high-quality, precision-engineered component designed specifically for select Chrysler, Dodge, Jeep, and Ram vehicles, ensuring seamless integration with the manufacturer s locking mechanisms. This cylinder is part of the **NO-S series**, which eliminates the need for periodic lubrication or maintenance, making it a hassle-free solution for drivers seeking reliability and longevity. Crafted from durable materials, including hardened steel and corrosion-resistant alloys, the 4378172 is built to withstand harsh environmental conditions, from extreme temperatures to moisture and road salt, ensuring consistent performance over thousands of miles. Its ergonomic design features a smooth, easy-to-operate lever mechanism that provides a satisfying click when engaged, while the internal spring-loaded mechanism guarantees smooth operation whether locking or unlocking from either the inside or outside. The cylinder is fully compatible with Chrysler s **Gen II and Gen III door lock systems**, making it an ideal replacement for original equipment parts that may have worn out over time. Whether replacing a faulty cylinder due to sticking, misalignment, or key-related issues, this Mopar part delivers the same level of precision and durability as the factory unit, ensuring a secure and reliable fit. Built to meet or exceed OEM standards, the 4378172 NO-S cylinder is a trusted choice for automotive professionals and DIY enthusiasts alike, offering a straightforward installation process and long-term dependability without the need for additional maintenance.

### Pros and Cons of buying a Chrysler/Mopar Part Number 4378172 (Door Lock Cylinder)

1. **Direct Fitment** This part is manufactured to match the original equipment specifications for Chrysler vehicles, ensuring compatibility without modifications. It should align perfectly with the door lock mechanism, reducing the risk of installation issues.

2. **Quality and Durability** Mopar (Chrysler s aftermarket brand) is known for producing parts that meet or exceed OEM standards. The 4378172 door lock cylinder is likely built to last, especially if it s a genuine or high-quality aftermarket replacement.

3. **Reliability** Since it s a common part, it has likely undergone testing and is widely used in repairs. This reduces the chance of premature failure compared to lower-quality knockoffs.

4. **Ease of Installation** The part is designed for straightforward replacement, often requiring only basic tools. Many users report that swapping out a faulty cylinder is a simple DIY job, saving labor costs.

5. **Warranty Coverage** If purchased from an authorized dealer or reputable retailer, the part may come with a warranty, providing peace of mind in case of defects.

6. **Availability** As a widely distributed part, it is easy to find in stock at auto parts stores, online marketplaces, or directly from Mopar s website, reducing lead times.

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1. **Cost** While not excessively expensive, it may be pricier than generic or no-name alternatives. For budget-conscious buyers, this could be a drawback, especially if the vehicle has multiple cylinders needing replacement.

2. **Potential Counterfeit Parts** If purchased from untrusted sellers (e.g., third-party online marketplaces without authentication), there s a risk of receiving a counterfeit or low-quality replica that fails quickly.

3. **Compatibility Concerns** Though designed for specific Chrysler models, slight variations in door lock mechanisms (e.g., due to year or trim level) could require additional adjustments or tools. Always verify the part s compatibility with your exact vehicle before buying.

4. **Limited Customization** Unlike some aftermarket parts, this is a direct replacement with no additional features (e.g., keyless entry compatibility unless it s a newer model-specific part).

5. **Installation Challenges** While generally straightforward, some users may encounter difficulties if the door panel or lock mechanism is corroded, damaged, or requires disassembly of surrounding components (e.g., door trim).

6. **Resale Value Impact** If the part is replaced due to wear or failure, it may not directly affect the vehicle s resale value, but neglecting maintenance could lead to broader issues (e.g., stuck doors) that might deter buyers.

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The Chrysler/Mopar 4378172 door lock cylinder is a reliable and high-quality replacement part for Chrysler vehicles, offering a balance of fit, durability, and ease of installation. It is a strong choice for those prioritizing authenticity and longevity, especially when purchased from authorized sources. However, the cost and potential for counterfeit parts are minor drawbacks that can be mitigated by buying from trusted retailers and verifying compatibility.

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- **Buy from an authorized Mopar dealer or a reputable auto parts store** (e.g., AutoZone, O Reilly, or RockAuto) to ensure authenticity and warranty coverage.

- **Verify compatibility** with your exact vehicle model, year, and trim to avoid mismatches.

- **Consider DIY installation** if comfortable with basic tools, but seek professional help if the door mechanism is complex or corroded.

- **Check for alternatives** (e.g., generic brands like Dorman or Carter) if budget is a concern, though quality may vary.

- **Replace both cylinders** (left and right) if one fails, as they often wear at the same rate.

For most Chrysler owners, the 4378172 is a sound investment that simplifies repairs and ensures reliable operation. Prioritize quality over price to avoid repeated replacements.

Details:

Although it does not come with a manufacturer warranty, the product is guaranteed to be of high quality and suitable for installation on specified vehicle model. The NOS Chrysler Door-Lock Cylinder 4378172 is a genuine manufacturer part made by Chrysler/Mopar. It is specifically designed as a door lock component for Chrysler vehicles, ensuring security and functionality.

part #: 4378172 prices

• $60.79-$86.35

specifications carlockiio:

• for makes: Chrysler
• brand: Chrysler/mopar
• mpn: 4378172
• type: Door Lock
• manufacturer warranty: No
• location: Vp360

general carlockiio:

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

seller carlockiio:

• rating: 100.0%
• # reviews: 2835
• city: Hereford, Arizona

returns carlockiio:

• policy: No Returns

payments carlockiio:

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

offer carlockiio:

• sold: 0
• availability: In Stock
• started: March 15, 2026
• options: Ship-to-home
• quantity: 1

shipping carlockiio:

• cost: $5.52
• carrier: USPS
• transit: 4-10 Days
• service: USPS Ground Advantage
• type: Calculated
• class: Standard

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