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trusted by enthusiasts for precision engineering and exceptional quality
This heater core return hose supplies coolant to the heater core
It ensures proper engine ventilation
It replaces OEM part number 31126855741
PIERBURG Air Pump Shut Off/Block Off Valve O trusted by enthusiasts for precisionThis PIERBURG air pump shut off block off valve is used in secondary air injection systems to control airflow during engine warm up. It requires a new gasket (part 11727505259) for installation. Designed as a direct OEM replacement, it helps maintain proper emissions system function. Key Features & Benefits Requires gasket: Sold separately, part number 11727505259. Direct OEM replacement: Meets PIERBURG quality standards. Controls secondary air flow:
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