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8L4 Audi A4 Quattro 1999–2002 1
Precision Engineering: Built to the highest standards for long-lasting durability and reliability
Reliable coolant flow: Ensures optimal engine temperature regulation
restoring factory-like shift feel
Pierburg Air Pump Check Valve 7.22286.26.0 Disc Brake 8L4 Audi A4 Quattro 1999–2002This Pierburg Air Pump Check Valve prevents backflow of exhaust gases into the secondary air injection system. Designed as a direct OE replacement for a wide range of Audi and Volkswagen models from the 1990s through mid 2000s. Restores proper emissions system function and helps the engine reach operating temperature faster. Key Features & Benefits OE Replacement: Directly replaces the original check valve without modifications. Prevents Backflow: One