MechanMagic Remote Key Fob Replacement for Nissan & Infiniti — 4-Button 2‑Pack, Pre-tested with Battery

The MechanMagic 4-button remote is a pre-tested replacement key fob compatible with specific Nissan and Infiniti models (FCC ID KR55WK48903 / KR55WK49622), supplied ready to program with battery and electronics.

If your factory remote is lost, damaged, or the buttons no longer respond, this MechanMagic replacement gives you a dealer-quality spare that fits multiple Nissan and Infiniti part numbers. Each unit arrives with the battery and internal circuit pre-installed and has been function-tested before shipping, so it's ready for professional programming by an auto locksmith or dealership.

Which cars and part numbers will this remote work with?

This replacement is engineered to match FCC IDs KR55WK48903 and KR55WK49622 and fits a range of Nissan and Infiniti models across several years. It is compatible with specific part numbers listed by manufacturers, making it straightforward to confirm fitment before purchase.

• Compatible FCC IDs: KR55WK48903 and KR55WK49622
• Nissan models: Altima (2007–2012), Maxima (2009–2014), Murano (2009–2014), Versa sedan (2007–2012), 370Z (2009–2015)
• Infiniti models: EX35 (2008–2012), FX35 (2009–2012), G37 (2008–2013), G25 (2011–2012), Q60 (2014), QX70 (2014–2015)
• Compatible OEM part numbers: 285E3-JA05A, 285E3-JA02A, 285E3-JA000, 285E3-JK62A

How do I get this fob programmed and ready to use?

The MechanMagic fob ships with battery and electronics pre-installed but requires professional programming; it does not support user self-programming. Take the fob to an auto locksmith or a dealership where they will pair it to your vehicle’s immobilizer and remote entry system.

• Bring vehicle proof of ownership and VIN to the pro
• Programming performed by locksmith or dealer (not included)
• Pre-installed battery reduces setup time at appointment
• Sold as a pack of two remotes for backup or multi-car households

What quality and testing does MechanMagic provide?

Every key fob is fully pre-tested with professional tools before leaving the warehouse to ensure the onboard electronics respond as expected. The housing, buttons, and internal circuitry are inspected, and the battery is installed so you receive a function-ready unit.

• Factory-style button layout and tactile feedback
• Electronics checked for proper frequency and operation
• Battery included and installed for immediate testing by the programmer
• Sold in a 2-pack to replace lost remotes or keep a spare

Who is this replacement remote best suited for? Choose this MechanMagic 4-button fob if you need a reliable, OEM-style replacement for a Nissan or Infiniti that uses FCC ID KR55WK48903 or KR55WK49622. It’s ideal for owners who want a pre-tested unit ready for professional programming, for locksmiths who prefer ready-to-program remotes, or for anyone buying a spare remote to avoid dealer markups. Note that you will need a qualified pro to complete the pairing—this product does not include programming service.