May 1, 201313 yr Dear All, in my enthusiasm for sprucing my bikes, I decided to buy a new plug! Both my REV3 250 and GG 125 have a PR5ES plug. As i am getting myopic in my old age, I have ordered and recieved BR5ES plugs... Does anyone know the difference? Im fairly sure the '5' means its the same heat grade, but other than that im lost. thanks Ian
May 1, 201313 yr Author The only thing that seems to differ is the use of Platinum. As its a rather expensive element, im assuming there isnt much there. Will this just affect plug life, or its resistance to oiling/fouling? Will a new not Platinum plug perform better than a older platinum? Or should i keep them for emergencies? thanks Ian
May 1, 201313 yr It takes a bpr5es not b5es. The `P` stands for projected tip. It is slightly longer at the tip.
May 1, 201313 yr In NGK language The first letter is the diameter of the threaded area (B,C or D) Second if a P is projected tip If not projected then its R and means resistor Number is heat range The E is length of the threaded area And S means standard, I suspect if it were Platinum it would end with P Platinum won't make your bike go faster (or slower) or last longer or have stronger spark It's for ignition systems designed to require it, save your money
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.