HPS Performance HPS Silicone Radiator Coolant Hose Kit Mazda 1990-1993 Miata, 57-1029 Color:Black the COMP Cams® Electric Vacuum

the COMP Cams® Electric Vacuum Pump requires a 12V negative ground system and only operates when vacuum drops below 18 inches of vacuum and then turns off over 22 inches of vacuum

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HPS Performance HPS Silicone Radiator Coolant Hose Kit Mazda 1990-1993 Miata, 57-1029 Color:Black the COMP Cams® Electric VacuumFeatures and Benefits HPS high temperature 3 ply reinforced silicone radiator hose kit (part number 57 1029) replaces 1990 1993 Mazda Miata stock OEM rubber lower and upper radiator coolant hoses with high heat resistance material which meets or exceeds OE specifications (Maximum temperature rating: 350F). Vehicle Application 1990 1993 Mazda Miata Remark: Silicone hose water permeation rate is 10 to 15 times greater than standard EPDM rubber hose.