Turner Motorsport Underdrive Pulleys

As used TMS' racecars and street cars, these are engineered not only to be the best pulley kits on the market but also to provide the best compromise between performance and reliability. Specifically, TMS has designed them to underdrive the water pump, power steering pump* and alternator*. Adding these is like getting FREE HORSEPOWER - there are no downsides and underdriving of these accessories has been proven safe through years of on and off-track use. TMS does not believe it is safe to change the crankshaft pulley due to the potential harm to the crankshaft. These kits provide a 10%-20% overall reduction in driving your car's systems and have been dyno-tested with a gain of up to 11hp. Kit includes water pump, power steering, alternator pulleys and belt. The T-6061 hard anodized aluminum pulleys account for a 10 to 20-percent decrease in accessory speeds, reducing the load on the engine but still maintaining a safe margin for reliability on all components. Installation involves removing the fan for easy access to the front of the engine. The main drive belt comes off easy and pulley is mounted with Allen head bolts. Typical installation time is 1.5 hours. New main drive belt is included. The pulleys were good for 10.7 hp at 6960 rpm and 8.1 lb-ft of torque at 5550 on the 1995 M3. *Alternator pulleys - There are two kits available. One for cars with Bosch Alternators and the other for cars with Valeo alternators. Please confirm which alternator your car has prior to ordering. *Please confirm the model E36 you have upon ordering. Different models were supplied with different power steering pulleys. We need to know what model you have to supply you with the correct kit.