Energy Suspension Hyper-Flex Bushing Master Set - Polyurethane - Black - 78-87 GM Vehicles RS200 This water neck works with

This water neck works with the OEM thermostat and hose

Concentricity is not assured when universal type clutches or spacers are used

gasket seat * Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat

and larger displacement street machines with typical operating ranges between 4000 to 8000 RPM depending on application

2007-2019 Chevrolet Silverado 2500 HD 78

Energy Suspension Hyper-Flex Bushing Master Set - Polyurethane - Black - 78-87 GM Vehicles RS200 This water neck works withEnergy's Hyper Flex(TM) is superior performance polyurethane which has proven itself under the most demanding conditions on the race track, off road and street performance driving, Hyper Flex(TM) components do not wear or deteriorate from exposure to undercar chemicals such as oils and coolants and withstand atmospheric conditions like UV exposure and pollutants. Impervious to these elements, Energy's Hyper Flex(TM) components are a great value. Not