Fitment: For 1999-2001 Jeep Cherokee 4.0L l6 For 1999-2004 Jeep Grand Cherokee 4.0L l6 For 1999-2004 Jeep Wrangler 4.0L l6 For 1999-2004 Jeep TJ 4.0L l6 Features: ✯20%increasein power,10% reductioninfuel consumption,10% reductionin exhaust gas. ✯Carbon on the surface area ofthe cylinder is removed. ✯Excellent quality prolongs thelifespan of your car Optimize the engine to burn more fully. ✯The product is reasonably designed andlong-term use can effectively optimize the engine andmake the engine perfor-mance more stable. ✯Each of our fuel injectors has undergone fuel injection testing Ensure thefuel injection. rate and combustion efficiency of each nozzle. Packing Include: 6 x Fuel Injectors.