Looking to maximize the performance of the Supercharged 3.0T Audi S4/S5/SQ5, C7 A6/A7, D4 A8 3.0 TFSI. Look no further. Get up to 540HP and 491FT-LBS of torque with the 034Motorsport Dual Pulley Hardware Kit! Included is all the hardware needed to go from stock, to a Stage 2+ tuned, dual pulley upgraded beast! Also included is Audi 3.0T Gen 1/Gen 2 Supercharger Tensioner - Billet Aluminum Pulley Billet Aluminum Supercharger Tensioner Pulley for Audi 3.0T Gen 1 & Gen 2 Losing boost? Have an old or tired belt tensioner? Now is the time up replace it with a trusted solution, plus the added benefit of a billet pulley! Upgrade your Audi 3.0T supercharger belt system with our precision-engineered tensioner pulley. This upgrade combines the OEM tensioner mechanism with our CNC-machined billet aluminum pulley. Compatible with all 3.0T Gen 1 and Gen 2 CREC engines. Also The Audi air to water-cooled applications required an advanced configuration that further expands on their cooling system and addressed higher cooling capacity and water volume. We took this challenge seriously and with our help from Audi owners/friends, we now provide you a cooling solution that performs amazingly on your Stock, upgraded or higher boost tuned applications. Our unique patented design uses the entire area of these large vehicles to provide you with excellent cooling capacity, higher water volume, and amazing results. At the point of the invention and taking to market, no other heat exchangers in the market were designed this way. This design allows for water to stay on the cooling stage longer and dissipate heat longer than other normal single and dual-pass systems. Our multiple-pass system provides a slower temperature rise and faster recovery. High-density fin core for excellent heat dissipation. Purges all air as it runs. Bleed port included for assisting air removal during installation. Durable black satin/matte coating finish on end tanks for long-life durability and resistance to road debris, great finish, easy to clean, corrosion resistance, and long life. All Aluminum hand tig welded construction Side Mounting brackets and bolts for crash bar install - Included Self-tapping screws for mounting included 3/4" Tubes Dimensions: W 23" x H 17" x D 2.4" not including side tubes. Proven to be one of the most efficient heat exchangers in the market. Come with tuning software and tuning cable.