1. Lock Hardware Deals
  2. sku: 30960726686254853
  3. MERCEDES ML350

MERCEDES Left Rear Lock Actuator Wrnty 643.MB1312 Benz 1YR

fits model: Ml350. make: Mercedes. year: 2012.

643.mb1312 Mercedes-benz Left Rear Lock Actuator Oem 2012 Ml350 1yr Wrnty

( Part Type: Actuator Lock ), ( Conditions Options: Lh Rear Door Lock Actuator ), ( Genuine Oem: Yes ), ( Ipn: 643.mb1312 ), ( Make: Mercedes-benz ), ( Manufacturer Warranty: 1 Year ), ( Partout Id: A-123238233 )

Review MERCEDES benz Left Rear Lock Actuator Oem 1yr Wrnty fits ML350 2012

The **Mercedes-Benz 643.MB1312 Left Rear Lock Actuator** is a precision-engineered component designed exclusively for the **2012 Mercedes-Benz ML350 (W166)**, ensuring seamless integration with the vehicle s advanced keyless entry and central locking system. This high-performance actuator is a critical part of the **electronic power door lock mechanism**, responsible for smoothly engaging and disengaging the rear passenger-side door lock with minimal effort, even under varying environmental conditions. Crafted from durable, corrosion-resistant materials, the actuator is built to withstand the demands of daily driving, including exposure to temperature fluctuations, moisture, and road debris, while maintaining reliable operation over extended periods. Its robust construction incorporates a **high-torque motor** and a **gear-driven mechanism**, allowing for precise and consistent lock/unlock cycles without binding or excessive wear. The actuator is fully compatible with the **MB1312 wiring harness** and adheres to Mercedes-Benz s stringent quality standards, ensuring a perfect fit and optimal functionality with the vehicle s existing electrical and mechanical systems. Backed by a **one-year warranty**, this genuine OEM part guarantees long-term reliability, reducing the risk of premature failure and the need for costly replacements. Whether used in a routine maintenance upgrade or as a direct replacement for a faulty actuator, this component restores the ML350 s original locking performance, enhancing convenience, security, and overall driving experience.

**Pros and Cons of Buying a Used Mercedes-Benz 643.MB1312 Left Rear Lock Actuator (2012 ML350) with a 1-Year Warranty**

### **Pros**

1. **Cost-Effective Repair** Purchasing a used actuator instead of a new one significantly reduces repair costs, which can be substantial for OEM or high-quality aftermarket parts.

2. **Compatibility** The part is specifically listed for the 2012 ML350, ensuring a direct fit without modification, reducing the risk of installation issues.

3. **Warranty Coverage** The included 1-year warranty provides some peace of mind, offering protection against premature failure due to manufacturing defects or poor quality.

4. **Quick Turnaround** Buying used parts often means faster delivery than waiting for a new part, minimizing downtime for the vehicle.

5. **Budget-Friendly Alternative** For owners who cannot afford a new part or prefer to avoid high aftermarket prices, a used actuator is a practical compromise.

### **Cons**

1. **Uncertain Lifespan** Used parts may have pre-existing wear or damage that isn t immediately visible, potentially leading to shorter reliability compared to new components.

2. **Limited Warranty Duration** A 1-year warranty is relatively short, especially if the part fails before the coverage expires. Some new parts come with longer warranties (e.g., 3 5 years).

3. **Risk of Counterfeit or Poor-Quality Parts** There is a chance the used part may be salvaged from an accident or improperly stored, affecting performance or longevity.

4. **No Return Policy** If the part fails quickly or doesn t fit correctly, returning it may be difficult, especially if the seller has no reputable return process.

5. **Potential Hidden Issues** Without a thorough inspection or test, hidden flaws (e.g., corrosion, electrical problems) could arise after installation, requiring additional repairs.

### **Conclusion**

Buying a used **Mercedes-Benz 643.MB1312 left rear lock actuator** for a 2012 ML350 with a 1-year warranty can be a cost-effective solution for budget-conscious owners who prioritize immediate availability over long-term reliability. However, the trade-off is the risk of premature failure, limited warranty protection, and the possibility of receiving a part with undetected flaws.

### **Recommendation**

- **If cost is the primary concern and the vehicle is not critical for daily use**, the used part with warranty may be a reasonable choice, especially if purchased from a trusted source (e.g., a reputable auto parts dealer or salvage yard with inspection processes).

- **If reliability and longevity are priorities**, consider investing in a new or high-quality aftermarket part with an extended warranty, even if it means higher upfront costs. Alternatively, verify the used part s condition through a professional inspection before installation.

- **For peace of mind**, weigh the warranty terms carefully ensure it covers labor if needed and confirm the seller s return or replacement policy in case of failure. If possible, opt for a part with a longer warranty or a money-back guarantee.

Details:

Please compare part numbers BEFORE purchasing. Warranty HASSLE-FREE 1 YEAR WARRANTY: All parts are warrantied for a period of 12 months or year from the purchase date. Please disregard other fitment charts they may not be correct. If something is wrong with an order, we certainly do want to help you.

Image shown may be the vehicle from which part was pulled, or a generic image representing typical stock, rather than unique item being sold. Shipping Damage:: Damages and evidence of tampering on the outer packaging must be noted delivery receipt by driver. Free shipping only applies to items you keep. LEFT REAR LOCK ACTUATOR OEM 2012 MERCEDES-BENZ ML350 1YR WRNTY: LH DOOR Included: Hassle-free 1 Year Warranty Our Part #: 11334332.

More Parts: 1 Year Warranty. Easy to find parts that don't require a mechanics knowledge. Model: ML350. Very happy customer, excellent value and service.

Quality, Assured Parts All are Quality Tested Inspected.

specifications carlockiio:

  • for models: Ml350
  • for makes: Mercedes
  • for years: 2012
  • part type: Actuator Lock
  • conditions options: Lh Rear Door Lock Actuator
  • genuine oem: Yes
  • ipn: 643.mb1312
  • make: Mercedes-benz
  • manufacturer warranty: 1 Year
  • partout id: A-123238233

payments carlockiio:

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

general carlockiio:

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

shipping carlockiio:

  • service: Flat Rate Freight
  • type: Fixed
  • class: Freight
  • cost: $20.00

offer carlockiio:

  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home
  • started: April 16, 2026
  • best offers: True
  • sold: 0

seller carlockiio:

  • city: Rancho Cordova, California
  • # reviews: 23395
  • rating: 97.3%

returns carlockiio:

  • time: 60 Days
  • policy: Returns Accepted
  • paid by: Buyer
for models: ml350, for makes: mercedes, for years: 2012, part type: actuator lock, conditions options: lh rear door lock actuator, genuine oem: yes, manufacturer warranty: 1 year, partout id: a-123238233,
manufacturer: mercedes-benz, category: auto parts > car truck parts accessories > exterior parts accessories > exterior locks lock hardware, sku: 30960726686254853,
Mercedes ML350 Is Similar To:
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5 offers $125.00–$125.00 USD
  • Used. Offer #1 priced at $125.00 + $20.00 shipping estimate = $145.00* total. *OPEN FOR IMPORTANT FITMENT INFO*.+$20.00 shipping
  • Used. Offer #2 priced at $125.00 + $20.00 shipping estimate = $145.00* total. +$20.00 shipping
  • Used. Offer #3 priced at $125.00 + $20.00 shipping estimate = $145.00* total. +$20.00 shipping
  • Used. Offer #4 priced at $125.00 + $20.00 shipping estimate = $145.00* total. +$20.00 shipping
  • Used. Offer #5 priced at $125.00 + $20.00 shipping estimate = $145.00* total. +$20.00 shipping

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