Merkmeter narrowband O2 sensors.
These install discretely into your stock gauge cluster and function near identically to the original Merkmeter product
Great indication for how well your car is running, though a wideband is still reccomended for proper tuning.
Comes with all required hardware for installation.
$65 shipped until first of the year
$75 shipped after the new year.
No units will ship until the 28th, something bout not working and taking a few days off or whatever.
20 units available
FCFS
