KEYYOU Car Remote Key KR55WK49123 For BMW CAS3 System 315Mhz /433MHz / 868MHz For 1/3/5/7 Series X5 X6 Z4 Smart Key PCF7945 Chip
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Specifications
- Brand Name
- KEYYOU
- Origin
- Mainland China
- Customization
- No
- R/C Function
- WITH
- Interchange Part Number
- For BMW Cas3 System E60 E61 E70 E71 E72 E81 E82 E87 E88 E90 E91 E92 E9
- Manufacturer Part Number
- KR55WK49123
- OEM NO.
- does not apply
- Other Part Number
- 315mhz / 433mhz / 868MHz Remote Key For BMW
- Material
- abs plastic
- Country/Region of Car Manufacture
- Made in china
- Chip
- PCF7945 Chip
Product Description
Condition: 100% Brand New
Color: Like the picture show
Buttons:3 Buttons
Key Blank: Yes
Electronics/Battery: Yes 868/315/433 mhz
Weight: 55g
Note - if the FCC ID doesn't match, please don't buy. It will not work.
Fitment:
For BMW 2007-2013 X5 (E70)
For BMW 2008-2013 X6 (E71/E72)
For BMW 2009-2013 Z4 (E89)
For BMW 2008-2013 1 Series (E82/88)
For BMW 2005-2011 3 Series (E90/91)
For BMW 2007-2013 3 Series (E92/93)
For BMW 2006-2010 5 Series (E60/61)
For BMW 2006-2010 6 Series (E63/64)
For BMW 2002-2009 7 Series (E65/66)
For BMW 2010-2012 7 Series (F01/02/04)
And others...
Important Note:
1.This item isn't a remote,it is just a remote key shell case replacement.
2.There is NO interior (remote/electronics/transponder chip)unit inside.
3.Please check your key look the same as the one in our product picture above before you purchase.
4.Get blade cut by local locksmith/dealer or swap the blade with your original.
5.Because of hand measurement ,1-2mm/inch deviation in size is a common thing,please check your size carefully before you buy it.
Package Includes:
1 x 3 Buttons Remote Key
1 x Circuit board
1 x Battery are included
Pros & Cons
Pros
- Compatible with a wide range of BMW CAS3 system models including 1/3/5/7 Series, X5, X6, Z4
- Available in three frequency options to match different regional BMW specifications
- Pre-assembled with electronics and a battery for immediate use after programming
- Uses a secure PCF7945 chip for reliable key functionality
Cons
- The key blade must be cut separately for an additional fee, increasing total purchase cost
- Buyers must confirm their vehicle's FCC ID matches KR55WK49123 to avoid compatibility issues
- Product notes that it will not work if the FCC ID does not match, creating a risk of incorrect purchases
- No programming instructions are included, so buyers will need professional programming services or additional guides
Common Questions
Which BMW vehicle models is this remote key compatible with?
It is designed for BMW 1/3/5/7 Series, X5, X6, Z4 with CAS3 system, including E60, E61, E70, E71, E72, E81, E82, E87, E88, E90, E91, E92 models.
What frequency options are available for this remote key?
It is available in 315MHz, 433MHz, and 868MHz frequency variants.
What chip does this remote key use?
It uses a PCF7945 chip for secure, reliable programming.
Does this remote key come with a cut key blade?
No, the key blade cutting service is available as an extra paid add-on per the product description.
Is this remote key fully assembled with electronics and battery?
Yes, the remote key is 100% brand new and includes electronics and a battery.
Product information last updated on November 23, 2025