The factory plugs do not handle the M838T’s high cylinder pressures very well and frequently result in misfire problems, especially on modified vehicles. Weistec spark plugs are 1 step colder to help prevent pre-ignition in engines that are making more power than stock allowing you to further push the envelope of your vehicle.
DETAILS
+ Fits all McLaren MP4-12C / 650S / 600LT / 570S / 570GT / 540C / 600LT / 720S models with M838T or M840T engine
SHIPPING: These spark plugs are commonly ordered with rush shipping. We highly recommend contacting us for expedited orders to ensure proper delivery time.
