This wet clutch kit is a high-quality replacement part,safe and reliable so that ensure accurinstallation and easy installation. The Wet Clutch is also balanced to reduce any vibrations and to ensure that it operates smoothly. All inside surfaces are machined preventing premature wear on your belt. OEM Part Number: 5UG-17620-00-00, 93104-41119-00, 93101-35001-00, 5KM-17623-00-00, 4WV-17653-00-00, 4WV-17654-01-00, 93211-594A4-00, 4WV-17639-10-00, 98517-04012-00, 90201-047R9-00 Compatible with 2002-2008 Yamaha 660,2004-2007 660 100% Brand New Items, Never Used Or Installed Fully assembled and ready to install Performance Reliability and durability of OE Professional installation in highly recommended (No instruction included) Replace Part Number: 4WV-17653-00-00, 4WV-17654-01-00, 4WV-17639-10-00 5UG-17620-00-00 5KM-17623-00-00, 5KM-16611-10-00,5KM-17611-00-00, 5KM-15463-00-00 90201-047R9-00 93104-41119-00, 93101-35001-00, 93211-594A4-00 98517-04012-00 What’s in Package: 1x Primary Clutch Sheave 1x Wet Drive Clutch Drum Housing 1x Collar 1X Oil Seal 1X Gasket As the picture shown Compatible With: 2002-2008 Yamaha 660 2004-2007 Yamaha 660 Please check OEM part number and compatibility before purchase it.