MAZDA B071862 Left Driver Rear Door Lock Latch Actuator CX-50

( Manufacturer Part Number: B071862 ), ( Type: Door Lock ), ( Country Of Origin: Japan ), ( Placement On Vehicle: Left, Rear )

Review MAZDA Cx50 Left Driver Rear Door Lock Latch Actuator Oem fits 2023–2025

The **Mazda B071862 (2023 2025 CX-50/CX50 Left Driver Rear Door Lock Latch Actuator)** is a precision-engineered component designed to ensure seamless and reliable operation of the rear passenger-side door on Mazda s latest compact SUV model. This actuator is a critical part of the vehicle s power door lock system, responsible for engaging and disengaging the door latch with smooth, silent precision under the direction of the vehicle s electronic control module (ECM). Crafted with Mazda s signature blend of durability and performance, this actuator is built to withstand the demands of daily driving while maintaining a high standard of functionality. Its robust construction features high-quality materials, including corrosion-resistant coatings and reinforced internal mechanisms, ensuring longevity even in varying environmental conditions. The actuator operates through a combination of electrical signals and mechanical force, allowing for effortless locking and unlocking via the driver s door controls, remote key fob, or keyless entry system. The design incorporates a compact yet sturdy housing, optimized to fit seamlessly within the door panel s structure without compromising aesthetics or structural integrity. Whether in urban commuting or highway travel, this actuator guarantees consistent performance, contributing to the CX-50 s reputation for practicality and driver convenience. For Mazda owners seeking to maintain or restore their vehicle s original functionality, this genuine OEM part is the ideal solution, offering the same level of quality and reliability as the component installed at the factory.

### Pros and Cons of buying a Mazda B071862 (2023-2025 CX-50/CX-5 Rear Door Lock Latch Actuator)

1. **Direct Compatibility** This part is specifically designed for the 2023-2025 Mazda CX-50 and CX-5 models, ensuring a proper fit without modifications. It is manufactured to Mazda s exact specifications, reducing the risk of installation issues.

2. **Reliability and Durability** Mazda parts, especially those from authorized suppliers or genuine OEM sources, are built to meet the vehicle s original performance standards. This should provide long-term functionality, especially if the actuator fails due to wear or electrical issues.

3. **Warranty Coverage** If purchased from an authorized Mazda dealer or a reputable aftermarket supplier, the part may come with a warranty (typically 12-60 months, depending on the seller). This offers peace of mind in case of premature failure.

4. **Prevents Further Damage** A faulty door lock latch actuator can cause misalignment, difficulty in opening/closing doors, or even damage to the door mechanism over time. Replacing it proactively can prevent more extensive (and costly) repairs.

5. **Ease of Installation** The part is designed to be a direct replacement, meaning it should fit seamlessly into the existing door latch system. Most mechanics or DIYers with basic automotive knowledge can install it without specialized tools.

6. **Improved Functionality** If the original actuator was malfunctioning (e.g., sticking, not engaging properly, or failing to lock/unlock), replacing it restores proper door operation, enhancing convenience and safety.

7. **Cost-Effective Compared to Labor** While the part itself may not be cheap, replacing it yourself (if comfortable) can save significantly on labor costs, which can range from $100-$200 per door at a dealership or repair shop.

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1. **High Upfront Cost** Genuine Mazda OEM parts or high-quality aftermarket equivalents can be expensive, often ranging between **$150-$300 per actuator**, depending on the supplier. This may be a significant investment if the vehicle is older or has other issues.

2. **Potential Counterfeit Parts** If purchased from an untrusted seller (e.g., unverified online marketplaces or non-authorized dealers), there s a risk of receiving a **counterfeit or low-quality replica**. These parts may fail prematurely or not fit correctly, leading to additional frustration and costs.

3. **Electrical or Wiring Issues** If the problem stems from a **corroded wiring harness, faulty fuse, or malfunctioning door lock switch**, replacing just the actuator may not solve the root cause. Diagnosing and fixing electrical issues can add complexity and expense.

- Tight clearance in the door panel.

- Requirement to remove the door trim or inner panel.

- Need for proper alignment of the latch mechanism.

If unsure, hiring a mechanic may be necessary, adding to the cost.

5. **Limited Availability of Aftermarket Alternatives** Unlike more common parts, high-quality aftermarket actuators for this specific Mazda model may be harder to find. Some aftermarket brands may not offer this part, forcing buyers to rely on OEM or less reliable third-party options.

6. **Potential for Recurring Issues** If the failure was due to a **design flaw, manufacturing defect, or environmental factors** (e.g., salt corrosion in winter climates), the new actuator might fail again within a short period. This could necessitate another replacement sooner than expected.

7. **Time-Consuming Process** Removing and reinstalling the door panel, disconnecting wiring, and ensuring proper alignment can take **1-3 hours** for a DIYer. For those without the time or patience, this may not be ideal.

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Buying the **Mazda B071862 (2023-2025 CX-50/CX-5 rear door lock latch actuator)** is a **necessary and justified repair** if the original actuator is faulty, as it directly addresses the issue and prevents further damage. The part is **reliable if sourced from a trusted supplier**, and its replacement restores proper door functionality. However, the **high cost, potential for counterfeit parts, and complexity of installation** are significant drawbacks that must be considered.

If the vehicle is **under warranty**, Mazda may cover the part (though labor may not be included). For non-warranted vehicles, **weighing the cost against the convenience and safety benefits** is crucial. If electrical issues are suspected, a **full diagnostic check** before purchasing the part is advisable to avoid unnecessary expenses.

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1. **Verify the Source** Purchase from an **authorized Mazda dealer, reputable aftermarket supplier (e.g., RockAuto, Dorman, or local Mazda parts stores), or a trusted online retailer with return policies**. Avoid unknown sellers to prevent counterfeit parts.

2. **Check for Electrical Issues** Before buying, have a mechanic inspect the **door lock wiring, switches, and fuses** to ensure the actuator is the sole problem. This avoids replacing a good part.

3. **Consider DIY vs. Professional Installation**

- If comfortable with basic automotive work, **install it yourself** to save labor costs.

- If unsure, **hire a mechanic**, especially if the door panel removal is complex.

4. **Compare Prices** While OEM parts are reliable, **high-quality aftermarket brands (e.g., ACDelco, Denso, or Bosch)** may offer similar performance at a lower cost. Always read reviews for the specific part number.

5. **Document the Issue** If the failure seems premature, **keep records** (service history, photos of the old actuator) in case of warranty claims or manufacturer recalls.

6. **Budget for Potential Additional Costs** Account for **tools (e.g., trim removal tools, socket set), door panel adhesive, or extra wiring** if needed during installation.

**Final Verdict:** **Worth the purchase** if the actuator is confirmed faulty and sourced correctly. The long-term reliability and safety benefits outweigh the upfront cost, but **due diligence in sourcing and diagnosis is essential** to avoid pitfalls.

Details:

INTERIOR TRIM CODE:VA5 - BLACK WITH GRAY, HYBRID PREFERRED LEVEL FEATURES AND MATERIALS QUALITY. 2.5L HYBRID I4 ENGINE AWD. PARTS CAME OFF A 2025 MAZDA CX-50 HYBRID AWD PREFERRED PKG. PAINT COLOR CODE: 47C - POLYMETAL GRAY METALLIC.

part #: b071862 prices

• $63.48-$99.99

specifications carlockiio:

• for makes: Mazda
• for years: 2023-2025
• mpn: B071862
• type: Door Lock
• country of origin: Japan
• placement on vehicle: Left, Rear

seller carlockiio:

• rating: 99.8%
• # reviews: 13666
• city: Anderson, South Carolina

offer carlockiio:

• started: March 23, 2026
• options: Ship-to-home
• sold: 0
• quantity: 1
• availability: In Stock

general carlockiio:

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

returns carlockiio:

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

shipping carlockiio:

• type: Fixed
• class: Standard
• cost: $0.00
• transit: 3-7 Days
• service: Standard

payments carlockiio:

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

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