Westinghouse 140566 - HA Regulator Kit wGen9500DF June2019 and olderKit contains 4 jets#3.9= 6K to 7K#4.0= 5K to 6K#4.1= 3K to 5K#4.2= 2K to 3K

High Altitude Regulator ConversionFor units before build date 0719 on the serial # contains 4 jets#3.9= 6K to 7K#4.0= 5K to 6K#4.1= 3K to 5K#4.2= 2K to 3K

HAK Regulator Kit Kit contains 4 jets***072019 build date and newer***A #4.6= 6K to 7KB #4.7= 5K to 6KC #4.8= 3K to 5KD #4.9= 2K to 3K

High Altitude Regulator Kit wGEN3600DFBefore 0719Kit contains 4 jets#2.9= 6K to 7K#3.0= 5K to 6K#3.1= 3K to 5K#3.2= 2K to 3K

High Altitude Regulator Kit wGEN3600DFafter 0719Kit contains 4 jets#3.2= 6K to 7K#3.3= 5K to 6K#3.4= 3K to 5K#3.5= 2K to 3K

High Altitude Regulator Kit wGEN3600DFAfter 0719Kit contains 4 jets#2.9= 6K to 7K#3.0= 5K to 6K#3.1= 3K to 5K#3.2= 2K to 3K

53DFV, 53DF High Altitude RegulatorKit contains 4 nozzles#4.4= 6K to 7K#4.5= 5K to 6K#4.6= 3K to 5K#4.7= 2K to 3K