Made from solid 6061-T6 aluminum this pulley is an overdrive replacement for the 1997-1999 Wrangler with the 4.0L inline 6 engine. It is overdriven by 10% more than the stock Mopar pulley. This overdrive helps keep your Jeep cooler by increasing the water pump and radiator fan speed. This increase in speed reduces engine temps by moving more water through the engine and cool air through the radiator especially at low engine speeds. Requires a shorter belt for proper operation. Laser etched belt contact surface and clear anodized.
