Audi Xenon Headlight Ballast (HID Control Module) – Fits A3, A4, S4, RS4, TT – Magneti Marelli Coolant Supply Hose This Rein upper expansion tank

This Rein upper expansion tank hose carries hot coolant from the radiator to the recovery tank

If the coolant expansion tank develops too much pressure

Durable Materials: Constructed with robust components to handle prolonged use without failure

0 TSI AUDI R8 (422

5L6 BMW 325i 1992–1995 2

Audi Xenon Headlight Ballast (HID Control Module) – Fits A3, A4, S4, RS4, TT – Magneti Marelli Coolant Supply Hose This Rein upper expansion tankThis Magneti Marelli HID headlight control module (Xenon ballast) is a direct replacement for Audi models including A3, A4, S4, RS4, and TT. It ensures proper operation of the headlight system and meets OEM specifications. Compatible with part number 8P0 907 391, it offers reliable performance and durability. Key Features & Benefits High Quality Construction: Built with premium materials for longevity and reliability. OEM Specification: Meets original