The VAC S54 Vanos Hub is designed as a direct replacement for the fragile BMW OE Vanos Hub, which typically fails due to a broken drive pin.
Our Hub is designed with an upgraded Drive Pin design, which is larger in diameter, as well as uses more material on the outside wall of the pin for much greater strength and durability.
In addition, the hub is made from 4340HT Billet Bar and heat treated to the same BMW OE Rockwell Hardness spec.
This upgraded design is not only significantly stronger, but the larger diameter of the VAC Drive Pins also minimize the huge clearance (approximately 1mm) that was left in the original design by BMW, and reduces clearance to 0.2mm. This difference is critical in helping to greatly eliminate VANOS noise.
Lastly, this upgraded design eliminates the need for modifying the Pump Ring or needing to buy a replacement, which further saves you money.