Arg-3 Strainer Service Kitarg Series Raw Water Strainer Service Kitcompatible With The Groco Arg 1500, 2015, 2520, 2500, 3015, 3020, 3025 And 3000 Series Strainersin The Box:(1) - 2-256 - Sight Glass O-Ring(1) - 2-238 - Cap O-Ring(1) - 2-234 - Cap O-Ring(4) - Pfw-2 Set - Sight Glass Bolt Washer(1) - 2-011 - Drain Plug O-Ring Before 080101(1) - 2-111 - Drain Plug O-Ring After 080101*Sold As An Individual