1. Lock Hardware Deals
  2. sku: 31707344210088721
  3. AISIN SX-3388

AISIN SX-3388 Rear Left Door Lock Body Eb

fits model: 4runner. make: Toyota. year: 2010–2016.

Sx-3388 Aisin Rear Left Door Lock Assembly For 2010-2016 Toyota 4runner Body Doors Eb

( Brand: Aisin ), ( Manufacturer Part Number: SX-3388 ), ( Type: Door Lock Assembly ), ( Placement On Vehicle: Body Doors ), ( Manufacturer Warranty: 1 Year / 12, 000 Miles ), ( Ipn: C374 73-61 ), ( Compatible Year: 2016 2015 2014 2013 2012 2011 2010 ), ( Core Charge: Free No Core Charge ), ( Position: Rear Left ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Aisin Door Lock Assembly )

Review AISIN Rear Left Door Lock Assembly Toyota Body Doors Eb fits 4RUNNER 2010–2016

The **Aisin SX-3388 Rear Left Door Lock Assembly** is a high-quality, direct-fit replacement part designed specifically for the **2010 through 2016 Toyota 4Runner**, ensuring seamless integration with the vehicle s **body doors and electric door lock system (EB)**. Engineered by **Aisin**, a trusted manufacturer known for precision and durability, this lock mechanism is built to restore proper functionality to your rear left door, whether it s suffering from wear, corrosion, or failure due to normal wear and tear. The SX-3388 features a robust **stamped steel construction**, reinforced with corrosion-resistant coatings to withstand harsh environmental conditions, including exposure to salt, moisture, and extreme temperatures common challenges faced by off-road and daily-drive vehicles alike. This lock assembly incorporates a **smooth-operating electric motor** and **precise gearing system**, ensuring reliable engagement and disengagement of the door latch with minimal resistance, reducing the risk of jamming or premature failure. Compatible with the **Toyota 4Runner s body door electrical system**, it integrates seamlessly with the vehicle s **central locking mechanism**, power door locks, and keyless entry functions, providing a hassle-free installation experience for both professional mechanics and DIY enthusiasts. Whether replacing a faulty lock due to a broken motor, worn-out latch components, or a completely seized mechanism, the Aisin SX-3388 delivers the performance and longevity expected from an OEM-grade replacement part, helping to maintain the integrity of your 4Runner s door security and convenience features. Built to meet Toyota s exacting standards, this lock assembly is a dependable solution for restoring smooth, trouble-free operation to your vehicle s rear left door.

**Pros and Cons of Buying an Aisin SX-3388 Rear Left Door Lock for a 2010-2016 Toyota 4Runner Body Doors (EB Series)**

### **Pros:**

1. **Direct Fitment** The Aisin SX-3388 is specifically designed for the 2010-2016 Toyota 4Runner (EB series), ensuring compatibility without modifications. This reduces the risk of installation issues or part mismatches.

2. **Reliability** Aisin is a well-known manufacturer in the automotive industry, particularly for door lock actuators and components. Their parts are often built to last, reducing the likelihood of premature failure.

3. **Easy Installation** Since it is an OEM or high-quality aftermarket replacement, the part is typically straightforward to install, especially if you have basic mechanical skills or access to a repair guide. The design aligns with the original equipment, minimizing adjustments.

4. **Cost-Effective** Compared to purchasing a full door assembly or a used door, replacing just the lock actuator is significantly cheaper. This makes it a practical solution for repairing a single malfunctioning lock.

5. **Prevents Further Damage** A failing door lock actuator can strain the wiring harness or door mechanism, potentially leading to more extensive (and costly) repairs. Replacing it early avoids secondary issues.

6. **Improved Functionality** If the original lock was failing intermittently or sticking, a new Aisin actuator restores smooth, consistent operation, enhancing convenience and security.

7. **Warranty Coverage** Many aftermarket parts from reputable brands like Aisin come with warranties, offering peace of mind in case of defects or early failure.

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### **Cons:**

1. **Limited Availability** While Aisin parts are reliable, they may not be as widely stocked as generic or budget aftermarket options. You might need to order from specialty auto parts suppliers, which could delay receipt.

2. **Potential Overkill for Minor Issues** If the door lock failure is due to a simple issue like a corroded pin or a loose cable (rather than the actuator itself), replacing the entire actuator might be unnecessary. Diagnosing the root cause first could save money.

3. **Installation Complexity** While the part is designed for easy fitment, some users may find the process challenging, especially if they lack experience with electrical or mechanical repairs. Improper installation could lead to further problems.

4. **Cost Compared to DIY Alternatives** If you re comfortable with disassembly and troubleshooting, you might find that a cheaper generic actuator or even a refurbished OEM part could work just as well for less money.

5. **Compatibility with Modified Doors** If your 4Runner has aftermarket modifications (e.g., reinforced doors, custom trim, or electrical upgrades), the Aisin part may not fit perfectly without adjustments. Always verify compatibility with your specific setup.

6. **Electrical Compatibility Risks** If the original wiring harness or connectors are damaged, replacing just the actuator won t resolve electrical issues. You may need to inspect and repair wiring separately, adding to the effort or cost.

7. **No Significant Performance Upgrade** Unlike performance parts (e.g., suspension upgrades), this is a functional replacement, not an enhancement. The improvement is purely in reliability and convenience, not in speed or capability.

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### **Conclusion:**

The **Aisin SX-3388 rear left door lock actuator** is a **strong, reliable choice** for repairing a faulty door lock on a 2010-2016 Toyota 4Runner. Its direct fitment, durability, and ease of installation make it a practical solution for most owners facing this issue. However, it s important to **diagnose the problem thoroughly** before purchasing to ensure the actuator is indeed the culprit. If the failure stems from wiring, corrosion, or other factors, addressing those first could prevent future replacements.

For most users, the **pros outweigh the cons**, especially if you prioritize quality and longevity. If budget is a concern, comparing it to other high-quality aftermarket options (e.g., Dorman, Spectra) may reveal similar alternatives at slightly lower prices.

### **Recommendation:** - **Buy the Aisin SX-3388** if:

- You ve confirmed the actuator is faulty (test by checking for power, resistance, or physical damage).

- You value a reputable brand with a warranty.

- You re comfortable with a straightforward installation or have access to guidance.

- **Consider alternatives** if:

- You suspect the issue is wiring-related and need a full electrical inspection.

- You re on a tight budget and can find a comparable part (e.g., Dorman 504-1000) at a lower cost.

- You re unsure about your mechanical skills and prefer a more forgiving installation process.

Ultimately, this part is a **solid, no-frills repair** that will restore your door lock to proper working order with minimal hassle. Pair it with a thorough diagnostic process to ensure you re addressing the root cause.

Details:

AISIN Rear Left Door Lock Assembly for 2010 - 2016 Toyota 4Runner Body doors eb: Status: In Stock.

part #: sx3388 price

  • $197.43

specifications carlockiio:

  • for models: 4runner
  • for makes: Toyota
  • for years: 2010-2016
  • brand: Aisin
  • mpn: Sx-3388
  • type: Door Lock Assembly
  • placement on vehicle: Body Doors
  • manufacturer warranty: 1 Year / 12, 000 Miles
  • ipn: C374 73-61
  • compatible year: 2016 2015 2014 2013 2012 2011 2010
  • core charge: Free No Core Charge
  • position: Rear Left
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Aisin Door Lock Assembly

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shipping carlockiio:

  • transit: 4-7 Days
  • class: Standard, Expedited
  • cost: $0.00
  • type: Fixed
  • service: Standard, Expedited

returns carlockiio:

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

seller carlockiio:

  • city: Indianapolis, Indiana
  • # reviews: 660229
  • rating: 99.6%

offer carlockiio:

  • started: May 22, 2026
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • quantity: 2

general carlockiio:

  • Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware
  • condition: New
for models: 4runner, for makes: toyota, for years: 2010-2016, type: door lock assembly, placement on vehicle: body doors, manufacturer warranty: 1 year / 12, 000 miles, compatible year: 2016 2015 2014 2013 2012 2011 2010, core charge: free no core charge, position: rear left, fitment type: direct replacement, bundle description: 1 pc genuine aisin door lock assembly,
category: auto parts > car truck parts accessories > exterior parts accessories > exterior locks lock hardware, sku: 31707344210088721,
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