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This Pierburg EGR valve (secondary air check valve) prevents backflow into the air pump
meets OE specifications
It ensures proper clutch disengagement and smooth shifting
Professional installation recommended as it requires access to the fuel tank
It replaces OEM part number 31126855741
PIERBURG Air Pump Shut Off/Block Off Valve O This Pierburg EGR valve (secondaryThis 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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