BMW Rear‑Right Central Door Lock Actuator / System Lock – 51227281940

Check part compatibility by using our vehicle filter options below. If you find your car, this part is compatible.

Restore reliable locking to the rear right door of your BMW with this OEM-spec central door lock actuator (part 51227281940). Engineered to perfectly match BMW factory specifications, this actuator resolves common faults like unresponsive locking, humming or clicking during central locking cycles, and intermittent rear door locking failure. It’s compatible with popular BMW models including the X1, X2, X5, and X6 — giving you peace of mind with a precise, long-lasting replacement.

OEM Number: 51227281940 /51227362786/51227473148/51227488004, 51227281940/51227362786/51227473148/51227488004

Direct replacement – High-Quality Aftermarket Part

Condition - Brand New

Operating Mode - Electric

Number of pins - 4 -pin connector

Vehicle Equipment - For vehicles without door pull assist

Fitting Position - Rear Right - Driver Side Lock System - with central locking, without double sealing

Our SKU: TB51227281940_313
 
All our Rear Right Central Door Lock Actuator For Bmw X1 X2 X5 X6 51227281939 are OEM quality and reliable after market car parts. This Rear Right Central Door Lock Actuator For Bmw X1 X2 X5 X6 51227281939 is specifically compatible with BMW: 2 Series, 5 Series, 7 Series, 8 Series, i3, iX3, X1, X2, X3, X4, X5, X6, X7, Mini: Mini, Mini Clubman, Mini Countryman, .

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.

FAQs 

1. Which BMW models are compatible with part number 51227281940?
This rear right door lock actuator is designed to fit BMW X1, X2, X5, and X6 models. If you're not entirely sure about fitment, just send us your VIN or registration, and we’ll check it for you.

2. What symptoms indicate the actuator is failing?

• Central locking doesn’t work for the rear right door.

• You hear humming, clicking, or buzzing when locking/unlocking.

• The rear right door sometimes locks or unlocks, but not consistently.

• Warning lights or error messages appear related to door status.

3. Is this genuine BMW OEM component?
This is an Aftermarket Part. 

4. What does installation involve?
Replacing the actuator typically requires removing the rear right door panel, disconnecting the wiring, removing the old actuator, and refitting the new one. If you’re not confident working inside door mechanisms, we recommend professional installation to avoid issues.

5. Will a new actuator fix the central locking issue?
If the locking problem is caused by a faulty actuator in the rear right door, then yes — installing this part usually restores correct operation. If the problem is due to a wiring issue or another component, further diagnosis may be needed.

6. Does the product come with a warranty?
Yes — all parts from D2P AutoParts, including this actuator, come with a 12-month warranty to cover manufacturing defects.

7. Is it safe to drive if the actuator has failed?
You can drive, but it's not ideal: a failed actuator may prevent the door from locking properly, which is a security concern and could also cause central locking warning lights.

8. Why buy from D2P AutoParts instead of aftermarket alternatives?

• OEM quality: Matching the exact specifications of the original BMW part

• Reliable performance: Built to last, with tested durability

• Peace of mind: Comes with a 12-month guarantee

• Fit first time: Precise engineering means no modifications required

1. Standard Shipping (Free) - Please allow 1-3 days for your order to be delivered 
2. DPD Next Day (£4.99) - Please place orders between Monday - Thursday before 4 PM UK time. This service applies to UK Mainland orders only.
3. Royal Mail Special Special Saturday Delivery (£19) - Please place orders between Monday - Friday before 3 PM UK time. 
4. International - Rates vary based on product size. Please enquire for further details. 

We do not provide any guarantees on shipping times, as we are reliant on 3rd parties. However, we strive to ensure that our customers are always satisfied.

All products are protected by a upto 10 year worry-free warranty depending on Part 

Warranty Coverage: Eligibility: To be eligible for 10-year warranty coverage, the car part must be fitted by a certified professional mechanic. Proof of fitment, including the mechanic's certification, must be submitted to Amesplan LTD within 30 days of the part's purchase date. Please send supporting documentation to us via email.In case a purchased product becomes faulty during its warranty period, for reasons unrelated to your acts, omissions or misuse of the goods, you must promptly notify us and fill out a warranty claim form. 

Warranty Non-Coverage: We do not have any liability for any defect arising from normal wear & tear, wilful damage, negligence, tampering of the goods, incorrect fitting of the goods by you and/or a third party. We are also not liable for any abnormal working conditions, alteration or repair of the goods or a failure to follow goods manufacturers' instructions (whether oral or in writing) 

We have a 180-day return policy, which means you have 180 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unused, and in its original packaging. You will also need the receipt or proof of purchase. 

For All Return buyers pay Return Postage.Returns will only be processed after we receive the approved part and a member of our team fully inspects the returned item & successfully matches the returned part to the return reason. 

For All UK orders, we offer free return. We do not offer any reimbursement of shipping costs for Any orders on original sale like Next Day Postage. 

For All Outside UK order  We do not offer any reimbursement of shipping costs for Any orders on either the original sale or the return. 

Please direct all questions to sales@d2pautoparts.com. 

Damages and issues 
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exchanges 

The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds 
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund.