TRI-POWER is Australia's premium choice of spark plugs, manufactured to the highest OEM quality tested and approved standards. Engineered with simple installation in mind, all pre-gapped so no adjustments are required! TRI-POWER spark plugs are corrosion resistant and have high performance, super fine tipped centre electrodes for greater ignitability, idle stability, easier starts in cold weather, lower emissions and reduced stress on other ignition system components. The range of part numbers are designed to suit a broad range of vehicles, covering 95% of the Australian car parc!