The Sea-Doo Carbon Ring Kit is a genuine OEM driveline service kit designed to restore the carbon seal system used on many Sea-Doo 4-TEC models. The carbon seal assembly creates the watertight seal between the driveshaft and hull by pressing the carbon ring against the stainless steel wear ring on the driveshaft while allowing the shaft to rotate freely. During operation the carbon ring rides against the wear ring to maintain constant sealing pressure. Over time friction and heat naturally wear the carbon surface. When the carbon ring becomes worn, the seal can weaken and allow water to enter the hull. Replacing the carbon ring kit restores proper sealing pressure and helps maintain the reliability of the Sea-Doo propulsion system. This kit is commonly replaced during driveline maintenance, jet pump removal, engine service, or whenever the carbon seal assembly shows signs of wear. Features • Genuine OEM Sea-Doo replacement kit • Restores the watertight seal between the driveshaft and hull • Helps prevent water intrusion caused by worn carbon seals • Designed for Sea-Doo 4-TEC propulsion systems • Ideal for preventative maintenance or driveline service