Product Description PWM fan upgrade for JK LS swaps. This is the same style fan as used on the 2012 and newer Jeep JK's. Its a PWM controled sealed motor unit. This fan will move a lot more air compared to the stock 3.8 fan, is more durable and lower profile. We usually package this fan with all our 52MM dual core radiators for extra clearance between the fan and the engine as well as the increased airflow at lower fan speeds. When used with our LS-LT conversions this fan will opperate at 10% when the engine is running. This keeps air moving at all times under the hood and at 10% you can't tell its on. When needed the fan will increase to whatever fan % is needed. This allows us to keep the engine cool under all circumstances without noise associated with 2 speed fans. If you are running a stock 3.8 or a HEMI you will need to use our EZPWM FAN CONTROL MODULE to control the fan speeds. Contact us for upgrade info. Product Tags: Pentastar-Fan-Upgrade
