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This PIERBURG Air Pump Check Valve (shut-off valve) prevents exhaust backflow into the secondary air injection system
Diameter 2
Direct OEM Replacement: Matches original specifications for seamless installation and perfect fit
OEM Equivalent: Replaces Volkswagen part number 1K0411105AQ
0L4 Volkswagen Tiguan 2011–2017 2
Audi VW A/C Compressor 5Q0820803K – Denso 4711504 Front Sensor This PIERBURG Air Pump CheckDenso A C Compressor 4711504 (OEM 5Q0820803K) is a direct fit OE replacement for a wide range of Audi and Volkswagen models on the MQB platform, including Golf, GTI, A3, S3, TT, and Tiguan (2015 2018). It offers factory grade cooling performance and durability. Key Features & Benefits OE specification from Denso: Factory level quality and performance. Direct bolt on for MQB platform vehicles: Engineered for easy installation on MQB based models.