The Jenny K-Pump compressors are available on 12 electric and four gas-powered Jenny wheeled-portable air compressors, as well as service vehicle and compressor/generator models. Upgrades include a taller crankcase to increase the amount of oil it can hold, which can help extend oil life and promote long compressor life. The cast iron pumps are splash lubricated with the Jenny Ultimate Blue synthetic pump oil, to provide maximum protectiion to the unit's cylinder, piston, crankshaft, bearings and rings. The pump includes a large flywheel for extra cooling and easty startup.