MAZDA KMV6-72-310A Lock Door

( Manufacturer Part Number: KMV6-72-310A ), ( Part Type: Lock Door ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included )

Review MAZDA Genuine Lock Door

The **Mazda KMV6-72-310A Lock Door** is a high-performance, precision-engineered mechanical component designed to deliver uncompromising security and durability for Mazda vehicles, particularly those equipped with the KMV engine platform. This lock door mechanism is a critical part of the vehicle s door latch system, ensuring a tight, secure seal between the door and body panel while providing smooth, reliable operation under varying conditions. Crafted from high-grade steel and reinforced with robust internal components, the KMV6-72-310A is built to withstand the rigors of daily driving, from extreme temperatures to heavy use, without sacrificing performance or longevity. Its design incorporates a **spring-loaded latch mechanism**, which guarantees consistent engagement and disengagement, preventing unintended door openings while minimizing wear on the latch components over time. The door s internal structure features a **precision-machined striker plate** and a **durable locking pin**, both of which work in tandem to maintain a secure fit, reducing noise and rattles that can compromise both comfort and safety. This component is particularly well-suited for Mazda models requiring a **high-torque latch**, such as those with heavier doors or reinforced body panels, ensuring a seamless fit even in aftermarket or modified applications. Whether used in original equipment manufacturing (OEM) or as a direct replacement for a worn-out or damaged latch, the KMV6-72-310A delivers a balance of strength, reliability, and ease of installation, making it an indispensable choice for automotive enthusiasts and professionals alike. Its compatibility with Mazda s KMV engine series including models like the Mazda6, Mazda3, and Mazda CX-7 ensures seamless integration with existing door hardware, while its modular design allows for straightforward replacement without the need for extensive modifications. Built to Mazda s stringent quality standards, this lock door mechanism exemplifies the brand s commitment to precision engineering, offering a durable solution that enhances both the functionality and aesthetic integrity of the vehicle.

### Pros and Cons of Buying a Mazda KMV6-72-310A Lock Door Mechanism

The Mazda KMV6-72-310A is a lock door actuator commonly used in Mazda vehicles, particularly in models like the CX-5, CX-30, and Mazda3 (depending on the generation). Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Reliability and Durability**

The KMV6-72-310A is a well-engineered component designed for Mazda s keyless entry and push-button start systems. It is built to withstand frequent use, making it a dependable choice for daily driving. Many users report that these actuators last for years without significant wear, especially if maintained properly.

2. **Compatibility with Mazda Vehicles**

This specific part is designed exclusively for certain Mazda models, ensuring a perfect fit without the need for modifications. It integrates seamlessly with the vehicle s electrical and mechanical systems, reducing the risk of compatibility issues that can arise with aftermarket parts.

3. **Easy Installation**

The KMV6-72-310A is relatively straightforward to install, especially for those with basic mechanical and electrical skills. Mazda provides detailed wiring diagrams and installation guides, and many mechanics or DIY enthusiasts can complete the job in a few hours. Replacement is often necessary due to failure rather than difficulty in installation.

4. **Cost-Effective Replacement**

While the part itself is not extremely cheap (typically ranging between $50 and $100 depending on the source), it is generally more affordable than replacing the entire door panel or hiring a dealership for labor-intensive repairs. Purchasing from authorized Mazda dealers or reputable online retailers ensures quality without excessive markup.

5. **Warranty Coverage**

If purchased from an authorized Mazda dealer or a trusted supplier, the KMV6-72-310A may come with a warranty (often 12 months or more). This provides peace of mind in case the part fails prematurely due to manufacturing defects. Some aftermarket suppliers also offer warranties, though these may vary in terms and coverage.

6. **Improved Security Features**

The KMV6-72-310A supports advanced security features such as keyless entry, remote start, and push-button ignition. If your vehicle s original lock actuator has failed, replacing it with this part restores these conveniences, enhancing both security and convenience.

7. **Availability of Spare Parts and Support**

Mazda has a robust aftermarket and dealer network, making it easy to find replacement parts, diagnostic tools, and technical support. This ensures that if issues arise post-installation, troubleshooting and repairs can be done efficiently.

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### **Cons**

1. **Potential for Early Failure**

Like all electrical components, the KMV6-72-310A can fail due to wear and tear, electrical issues, or exposure to moisture. Common failure points include the motor, internal wiring, or the actuator s mechanical linkage. Some users report that these actuators fail within 3 5 years, especially if the vehicle is driven in harsh conditions (e.g., extreme temperatures, salt exposure, or frequent short trips).

2. **Electrical Sensitivity**

The actuator is sensitive to electrical surges, poor grounding, or faulty wiring. If the vehicle s electrical system has issues (e.g., a weak battery, corroded connections, or a failing fuse), the KMV6-72-310A may not function properly or could fail prematurely. Diagnosing and fixing underlying electrical problems can add to the repair cost.

3. **Dependence on Proper Installation**

Improper installation such as incorrect wiring, loose connections, or misalignment of the mechanical linkage can lead to the actuator not functioning correctly. This may result in intermittent locking/unlocking, failure to engage, or even damage to the door mechanism. It is crucial to follow Mazda s installation guidelines or seek professional help if unsure.

4. **Cost of Replacement vs. New Door Panel**

While the KMV6-72-310A is cheaper than replacing an entire door panel, the labor cost for installation can be significant if hiring a mechanic. In some cases, especially for older vehicles, the cost of labor may approach or exceed the cost of a new door panel. DIY installation is recommended to save money, but it requires patience and technical skill.

5. **Limited Lifespan Compared to Mechanical Locks**

Unlike traditional mechanical door locks, which can last decades with minimal maintenance, electrical actuators like the KMV6-72-310A have a finite lifespan. They are subject to wear from repeated use, and their electronic components can degrade over time. This makes them a consumable part rather than a permanent solution.

6. **Compatibility Issues with Modified Vehicles**

If the vehicle has been modified (e.g., aftermarket alarm systems, custom wiring, or non-OEM keyless entry systems), the KMV6-72-310A may not work as intended. These modifications can interfere with the actuator s communication with the vehicle s control module, leading to malfunctions. Testing the part in the vehicle before finalizing the purchase is advisable.

7. **Potential for Counterfeit Parts**

Purchasing from untrusted sources (e.g., unlicensed online marketplaces or gray-market suppliers) increases the risk of receiving a counterfeit or low-quality replica. Counterfeit parts may fail quickly, lack proper documentation, or not fit correctly, leading to additional repair costs and frustration. Always buy from authorized Mazda dealers or reputable suppliers with return policies.

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### **Conclusion**

The Mazda KMV6-72-310A lock door actuator is a practical and reliable replacement for failed actuators in compatible Mazda models. Its strengths lie in its compatibility, ease of installation, and support for advanced security features. However, it is not without drawbacks, particularly its susceptibility to early failure, electrical sensitivity, and the need for careful installation to avoid further issues.

For most Mazda owners facing actuator failure, this part is a worthwhile investment, especially when purchased from a trusted source. The key to a successful replacement lies in addressing any underlying electrical issues, ensuring proper installation, and maintaining the vehicle s overall electrical system. If the vehicle is older or has a history of electrical problems, it may be prudent to consider the long-term reliability of the actuator alongside other potential repairs.

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### **Recommendation**

1. **Purchase from an Authorized Source**: Buy the KMV6-72-310A from an authorized Mazda dealer, a reputable online retailer (such as RockAuto, Amazon, or eBay with positive reviews), or a trusted auto parts store. Avoid unbranded or suspiciously cheap options to ensure quality and authenticity.

2. **Inspect the Vehicle s Electrical System**: Before installing the new actuator, diagnose any existing electrical issues (e.g., battery health, wiring corrosion, or fuse problems). Addressing these can extend the lifespan of the new actuator and prevent future failures.

3. **Follow Installation Guidelines Carefully**: If installing the part yourself, follow Mazda s service manual or the manufacturer s instructions precisely. Pay special attention to wiring connections, grounding, and mechanical alignment. If unsure, consult a mechanic or Mazda specialist.

4. **Consider Professional Installation for Complex Cases**: If the vehicle has extensive modifications or you lack mechanical/electrical experience, hiring a professional to install the actuator may be worth the cost to ensure proper functionality and avoid voiding any warranties.

5. **Monitor Performance Post-Installation**: After installation, test the actuator thoroughly to ensure it locks/unlocks smoothly and communicates correctly with the vehicle s keyless system. If issues persist, consult a diagnostic tool or Mazda technician to rule out software or wiring problems.

6. **Keep Spare Parts on Hand**: Given the actuator s potential for failure, consider keeping a spare or budgeting for a replacement in case of early wear. Regularly check the actuator s condition during routine maintenance.

In summary, the Mazda KMV6-72-310A is a solid choice for restoring keyless functionality to compatible Mazda vehicles. With proper care, it can provide reliable service for several years. However, be prepared for potential electrical or mechanical challenges, and prioritize quality and installation precision to maximize its lifespan.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Genuine Mazda Parts. Electrical parts are not returnable. Parts must be resalable and in the original packaging.

part #: kmv672310a prices

• $18.25-$30.89

specifications carlockiio:

• for makes: Mazda
• mpn: Kmv6-72-310a
• part type: Lock Door
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• parts included: Only Part Reference 0 On The Diagram Is Included

shipping carlockiio:

• service: Standard
• cost: $21.19
• type: Fixed
• transit: 6-13 Days
• class: Standard

seller carlockiio:

• # reviews: 1062
• rating: 99.3%
• city: Port Charlotte, Florida

offer carlockiio:

• availability: In Stock
• started: March 15, 2026
• quantity: 4
• sold: 0
• options: Ship-to-home

returns carlockiio:

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

payments carlockiio:

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

general carlockiio:

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

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