





Product description



With the new technology introduced by highly-skilled car thieves in recent years, vehicle safety has been an increasingly serious problem because the bugs of a car OBD ports are used to disable the alarm and a new key is programed to steal a car.

bbfly-K02 OBD Port lock is compatible with all vehicles produced after 1996 with an OBD2 port. However, as the locations of OBD2 ports vary among different brands and models, please check whether the OBD2 port of the vehicle matches the product before purchasing.

We provide a professional solution to prevent car thieves from connecting electronic devices to OBD ports to clone keys and steal cars.

bbfly-K02 OBD2 lock is solider and weigh much more than other products. Excluding the packaging and keys, the net weight of the product reaches 4.6oz (130g).

If it is found that the key cannot be pulled out, please continue to turn it to a fixed position in the “OFF” direction forcefully, and then the key can be pulled out.

Equipped with a double groove blade cylinder, K02 has a complex interior structure, and the cylinder blade can have over 10,000 variations.

If it’s difficult for you to turn the key manually, you may use our stick or vice to pinch the key’s bottom to facilitate your turning.
BBFLY OBDII lock perfectly replaces screw locking by using a key and an integrated key cylinder. Screw locking has apparent defects, such as complex installation and disassembling and high probability of being unlocked by small tools.
Other products available on the market are fixed with screws. BBFLY OBD2 lock needs a key only to lock and unlock the OBD port.
With an aluminum alloy shell and reinforced ABS, BBFLY OBD lock can prevent violent unlocking. Without a key with your code, the OBD lock cannot be dismantled without damaging the pins and wiring harness.
bbfly-K02 OBD lock is equipped with an integrated anti-theft key cylinder, and each key cylinder has a sole digital code and two keys. The cylinder blade can have 10,000 variations.
BBFLY OBD2 locking is applicable to 95% of OBD ports. However, the peripheral structures and positions of OBD2 ports for vehicles of different brands and models vary. Please check whether the position of your OBDII port matches the product before purchasing.
K02 can only pull out the key when it is completely locked. If it is found that the key cannot be pulled out, please continue to turn it to a fixed position in the “OFF” direction forcefully, and then the key can be pulled out.
Our structural engineers have solved the easy slip of early products for some vehicle models. Now, the patent application is under progress.
8 reviews for OBD Lock, bbfly-K02 ODB Port Locking Tool, Car OBD2 Protector Device (K02)
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$7.99

Captain K. –
Obd lock
It fits perfectly into the OBD port of the BMW G20.But i need to use the provided stick to turn the key to lock position. Once it’s installed, it’s tight and not loose.”
Dave A. –
A solid metal lock – over a plastic port
This does lock the port on my ’01 Ram, but is a bit loose. It’s not going to fall off, and even pulling and twisting, it does stay on. The keys work well at locking and unlocking, and it does not release the key in an unlocked position, which is good, so you know you’ve locked it when the key is removed. It’s metal, and is solid. Too bad the ports themselves are made of cheap plastic. This may not be a perfect protection device, but certainly worth it to slow or deter a theft, which makes it worth the price.
Amazon5150 –
Fits my Jeep Gladiator
Fits my Jeep Gladiator OBD2 port. Easy to install. Lots of Jeep Wranglers and Gladiators are getting stolen by plugging into OBD ports and taking key settings.
DLPTony –
Too Big To Fit
The product itself is made of great quality and I’m certain is quite effective in thwarting theives. However…it was too bulky to reach the ODB port on my 2022 Lexus IS500. I would have to cut the plastic under liner around the port so it would fit and that is a no-go. The device is not as universal as it needs to be.
Clemen Samuels –
Compact OBD port lock that adds real protection in seconds.
Machined aluminum threads on easily and seats flush without tools. Finish resists scratches, cap locks firmly, and there’s no rattle once installed. Excellent deterrent for unauthorized scans or tampering—small, simple, and effective.
דודי . מ –
Perfect 🏆
Perfect…👍🥇
Amazon Last Resort –
The Quality Management of the Product Needs Validated
The keyway in this product is challenging. We had to return the product for a replacement. Could not remove the key after locking with the device installed. Worked fine not installed. Tried on two different vehicles. Figured out the product had a quality issue and requested a replacement. The second one does work. However, I hope I can get it to unlock.
Fred Bloggs –
Very Well Made!
✅ What stands outThe device is designed to lock the vehicle’s OBD2 port with a key‑cylinder mechanism, preventing unauthorized diagnostic or reprogramming access via the port.It uses robust materials: in this K02 model, the shell is a combination of aluminum alloy and POM, offering some resistance to both tampering and forced entry.Installation appears straightforward: no wiring or complicated modifications, simply lock the port cover over the OBD2 connector.It addresses a real concern — Many modern vehicle thefts exploit the OBD2 port for key reprogramming or diagnostic hacking.⚠ Points to watch / limitationsFitment matters: Some vehicles may have non‑standard OBD port shapes or obstructions, so verifying compatibility before purchase is important.While the lock may deter casual or opportunistic theft via the OBD port, it is not a full vehicle security system.Key security: As with any keyed device, losing the key or the cylinder being compromised is a risk.Installation may require enough clearance around the port — some dashboards are tight, and added bulk may interfere with other connectors or covers.🎯 My verdictIf I were recommending this for someone:Yes, for anyone who values added security and has a vehicle susceptible to OBD‑based theft tools (especially keyless start vehicles or high‑value models). This lock adds a meaningful layer of defense.However, use it as part of a multi‑layer security strategy. It doesn’t replace an alarm, immobilizer, or other anti‑theft system — but it complements them by hardening a known vulnerable access point.Make sure to confirm fitment, have a plan for the key (and possibly a backup), and install it cleanly.Bottom line: The bbfly‑K02 OBD2 Port Locking Tool is a quality anti‑theft or access‑control device that delivers on its promise to protect the OBD port. If you frequently park your vehicle in unsecured or exposed locations, or have identified the OBD port as a potential risk in your security setup — this is a worthwhile investment.