Thumbnail Filmstrip of Audi Genuine Water Pump Pulley Bolts, Set of 6 - N91121903 Images
This specific hardware is used to secure the water pump pulley to the water pump assembly. On modern Audi V6 and V8 engines, the pulley is often a separate component from the pump itself, and it requires multiple bolts (typically 6) to hold it in place and handle the rotational torque from the accessory belt.
M6 x 12mm (Metric 6mm diameter, 12mm length).
This bolt is widely used across the Audi and Porsche lineup, specifically on the 2.9L and 3.0L V6 (EA839) and 4.0L V8 engine platforms.
Audi S4 / S5 / RS5 (2018–Present)
Audi A6 / A7 / A8 (3.0T and 2.9T variants)
Audi Q7 / Q8 / SQ7 / SQ8 / RSQ8
Porsche Cayenne / Panamera (with Audi-sourced V6/V8 engines)
The "6-Bolt" Pulley: Most newer water pumps for these engines use 6 of these bolts. If you are replacing your water pump, it is standard practice to buy a fresh set of bolts rather than cleaning and reusing the old ones, as the heads can easily strip during removal.
- Brand: Audi
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