ISR Performance Radiator Fan Shroud Kit - Nissan KA24DE S13 These fan shroud kits are the perfect match for any aftermarket radiator. The ISR fan shrouds are made for a direct OEM fit and include Dual 12 inch electric fans. All ISR fan shrouds are significantly lighter and more durable than OEM fan shrouds and will notably improve engine cooling performance by delivering a significant amount of cooler air directly to the radiator. ISR fan shroud kits also safely secure the fan blades from any potential damage to other essential engine components and include all mounting hardware. ** All ISR Performance Products are Designed for Off Road Use Only **