1. Lock Hardware Deals
  2. sku: 30169447122603853
  3. MAZDA DB4R59310

MAZDA DB4R59310 Lock Actuator 643.MZ1121 10166121

fits model: Cx-3. make: Mazda. year: 2021.

Db4r59310 Mazda Cx-3 2021 Lock Actuator 10166121

( Manufacturer Part Number: DB4R59310 ), ( Part Type: Actuator Lock ), ( Conditions Options: Lh Frt Lock Actuator ), ( Genuine Oem: Yes ), ( Ipn: 643.mz1121 ), ( Manufacturer Warranty: 1 Year )

Review MAZDA Lock Actuator fits CX-3 2021

The **Mazda DB4R59310 CX-3 (2021) Lock Actuator (Part #10166121)** is a precision-engineered component designed to ensure seamless and reliable operation of the vehicle s rear door locking mechanism. This high-quality actuator is specifically tailored to fit the 2021 Mazda CX-3, a compact yet sophisticated SUV known for its blend of sporty handling and modern comfort. Crafted from durable materials, the lock actuator is built to withstand the demands of daily driving, including exposure to varying weather conditions, road debris, and the mechanical stress of frequent use. Its robust construction minimizes wear and tear, reducing the likelihood of premature failure and ensuring long-term functionality.

The actuator operates using an electric motor driven by the vehicle s power distribution system, providing smooth and silent engagement when locking or unlocking the rear doors. This component is integral to the CX-3 s advanced security features, offering convenience with features like keyless entry, push-button start, and remote control access. The design incorporates a precise gearing system that delivers consistent torque, allowing for effortless operation even in cold temperatures or when the doors are partially open. Its compact yet sturdy build ensures it fits seamlessly within the CX-3 s door frame, maintaining the vehicle s sleek aesthetics while enhancing its practicality.

For Mazda owners seeking to restore or upgrade their vehicle s locking system, this actuator serves as an ideal replacement for worn or malfunctioning parts, such as those affected by corrosion, electrical issues, or mechanical failure. Whether addressing a specific problem like a stuck door lock, intermittent engagement, or a complete failure of the actuator, this part is engineered to deliver performance comparable to the original equipment manufacturer (OEM) specification. Its compatibility with the 2021 CX-3 model ensures a perfect fit, allowing for a straightforward installation process that can be completed with basic automotive tools. By maintaining the integrity of the vehicle s locking mechanism, this actuator contributes to the overall safety, security, and reliability of the Mazda CX-3, ensuring that drivers and passengers can confidently rely on their doors to function as intended.

**Pros and Cons of buying a Mazda DB4R59310 CX-3 (2021) Lock Actuator (Part #10166121)**

### **Pros:**

1. **Direct Fit and Compatibility** This part is specifically designed for the 2021 Mazda CX-3, ensuring an exact match in terms of size, function, and wiring. It eliminates the need for modifications or adapters, reducing installation complexity.

2. **OEM Quality** As a genuine Mazda part (or a high-quality aftermarket equivalent), it should meet the manufacturer s standards for durability and performance. This minimizes the risk of premature failure compared to generic or low-quality replacements.

3. **Reliability** The lock actuator is a critical component for door security and convenience. A reliable part reduces the likelihood of malfunctions, such as doors failing to lock/unlock properly, which can be frustrating and potentially unsafe.

4. **Ease of Installation** Since it s a direct-fit part, replacing it typically involves removing the door panel, unplugging the old actuator, and installing the new one. While it requires some mechanical skill, it s a straightforward DIY job for those with basic automotive experience.

5. **Prevents Further Damage** If the existing actuator is failing, replacing it early can prevent secondary issues, such as wiring damage from repeated attempts to force the door open or further wear on the door mechanism.

6. **Warranty Coverage (if applicable)** If purchasing from an authorized dealer or a reputable seller, the part may come with a warranty, providing peace of mind against defects.

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### **Cons:**

1. **Cost** Genuine Mazda parts or high-quality aftermarket equivalents can be expensive, especially when compared to generic or cheaper alternatives. The price may be a significant investment if you re on a tight budget.

2. **DIY Installation Challenges** While the process is manageable, removing the door panel and handling electrical connections requires patience and care. Mistakes during installation (e.g., improper wiring or misalignment) could lead to further issues or void warranties.

3. **Potential Counterfeit Parts** If buying from untrusted sellers (e.g., unverified online marketplaces), there s a risk of receiving a counterfeit or low-quality part that fails prematurely. Always verify the seller s reputation and part authenticity.

4. **Additional Labor Costs** If you re not comfortable with DIY repairs, hiring a mechanic to install the part will add to the total cost. Labor fees can vary widely depending on the shop and location.

5. **Limited Availability** Depending on the region, genuine Mazda parts may not always be readily available, requiring special ordering or longer wait times. Aftermarket options might have inconsistent quality.

6. **Compatibility Concerns (if misidentified)** Double-checking the part number is crucial. Installing the wrong actuator (e.g., one meant for a different Mazda model or year) could cause functionality issues or damage.

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### **Conclusion:**

The Mazda DB4R59310 CX-3 (2021) lock actuator (part #10166121) is a practical and reliable solution for replacing a faulty door lock mechanism. Its direct fit, OEM-quality construction, and ease of installation make it a strong choice for those prioritizing performance and longevity. However, the upfront cost and potential DIY challenges should be considered, especially if you re working with a limited budget or lack mechanical experience.

If you re confident in your ability to perform the replacement or have access to professional help, this part is a solid investment to restore your vehicle s functionality and security. For budget-conscious buyers, thoroughly researching aftermarket alternatives (while ensuring compatibility and quality) could be a viable alternative, though with slightly higher risk.

**Recommendation:**

- **Buy from a trusted source** (authorized Mazda dealers, reputable online retailers, or well-reviewed aftermarket suppliers) to ensure authenticity and quality.

- **Verify the part number** matches your vehicle s exact specifications to avoid compatibility issues.

- **Consider DIY installation** if you re comfortable with basic automotive repairs, or budget for professional labor if needed.

- **Compare prices** across sellers to get the best value, but prioritize quality over cost alone to avoid repeated replacements.

- **Test the new actuator thoroughly** after installation to confirm proper functionality before relying on it for daily use.

For most owners, the benefits of a reliable, direct-fit lock actuator outweigh the drawbacks, making it a worthwhile purchase for maintaining their CX-3 s performance and safety.

Details:

Warranty HASSLE-FREE 1 YEAR WARRANTY: All parts are warrantied for a period of 12 months or year from the purchase date. Please compare part numbers BEFORE purchasing. Quality, Assured Parts All are Quality Tested Inspected. Very happy customer, excellent value and service.

Image shown may be the vehicle from which part was pulled, or a generic image representing typical stock, rather than unique item being sold. Original is 6763978 Included: Hassle-free 1 Year Warranty Our Part #: 10166121. Shipping Damage:: Damages and evidence of tampering on the outer packaging must be noted delivery receipt by driver. Please disregard other fitment charts they may not be correct.

If something is wrong with an order, we certainly do want to help you. CX-3 2021 Lock Actuator 10166121: LH FRT LOCK ACTUATOR DB4R59310 ; FROM 2016 - 2021 2.0L SPORT Dummy. Free shipping only applies to items you keep. Easy to find parts that don't require a mechanics knowledge.

More Parts: 1 Year Warranty.

part #: db4r59310 prices

  • $50.00-$108.40

specifications carlockiio:

  • for models: Cx-3
  • for makes: Mazda
  • for years: 2021
  • mpn: Db4r59310
  • part type: Actuator Lock
  • conditions options: Lh Frt Lock Actuator
  • genuine oem: Yes
  • ipn: 643.mz1121
  • manufacturer warranty: 1 Year

general carlockiio:

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

returns carlockiio:

  • time: 60 Days
  • paid by: Buyer
  • policy: Returns Accepted

offer carlockiio:

  • quantity: 1
  • availability: In Stock
  • best offers: True
  • started: March 9, 2026
  • sold: 0
  • options: Ship-to-home

seller carlockiio:

  • # reviews: 23091
  • rating: 97.1%
  • city: Rancho Cordova, California

payments carlockiio:

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

shipping carlockiio:

  • type: Fixed
  • cost: $20.00
  • class: Freight
  • service: Flat Rate Freight
for models: cx-3, for makes: mazda, for years: 2021, part type: actuator lock, conditions options: lh frt lock actuator, genuine oem: yes, manufacturer warranty: 1 year,
manufacturer: mazda, category: auto parts > car truck parts accessories > exterior parts accessories > exterior locks lock hardware, sku: 30169447122603853,
Mazda DB4R59310 Is Similar To:
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2 offers $50.00–$108.40 USD
  • Used. Offer #1 priced at $50.00 + $0.00 shipping estimate = $50.00* total. FREE SHIPPING
  • New. Offer #2 priced at $108.40 + $27.50 shipping estimate = $135.90* total. Genuine Mazda Parts.+$27.50 shipping

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