Check the listing for details. Traxxas 3875 Water Cooling System, Blast. Condition: New. Listed at 14.00 USD. New in package Traxxas 3875 Water Cooling System, Blast This is the optional Traxxas Water Cooling System, and is intended for use with theTraxxas Blast. Water cooling is a highly recommended upgrade for the Blast, and mandatoryif aftermarket motors are used. The cooling system consists of tubing which picks up waterfrom underneath the boat, circulates it through coils wrapped around the motor, and thenexits it through the side or rear of the boat. FEATURES:Optional Water Cooling System Includes:(1) Water Cooling System: Tubing Fasteners Metal Coil Hardware Installation Instructions Vehicle models vary. We DO NOT guarantee this will fit the vehicle specified in this listing!Verify that this item is appropriate for your vehicle. Consult your manual or vehicle manufacturer.Verify vehicle fit-ment before purchase.Returns will only be accepted on items that are returned in new, factory-sealed packaging. Used, damaged (unless damaged when it arrived to you), and opened items will not receive a full refund. Any and all warranty claims will be handled through the manufacturer directly.