Gain 7 More Miles Per Gallon On The Highway ....Guaranteed. HHO Hydrogen Generator with (316L stainless steel) plates, plus EFIE sensor regulator,....For cars from 1996 ~ 2020 Package includes: 1- HHO Generator, with 3/8" one-way valve, filter and built-in digital voltmeter/ammeter .....Completely compact , no leak like others.... 2-4 feet of red and black wire with fuse. 1- Installation instructions 1- 16 grams of sodium hydroxide. 1- nylon strap for mounting. * This kit does not need to use PWM (pulse frequency modulator), its current consumption is 4.7 Amp. 12V. * No need to use separate filter and bubble tank, the generator has it built in. * Easy to install,....... . This generator NOT leak like others ......(others use rubber rings or gasket and theated fittings then after 3 -4 moths use due heat water or engine heat fails and leak). Cars that run on carburetor or propane gas, the efficiency of saving gasoline and gas is 63%, and it dramatically reduces environmental pollution and does not need to use the OBDII chip. (Please send me a message for this purpose). . .