ARG-3 Strainer Service KitARG Series raw water strainer service kit. Compatible with the Groco ARG 1500, 2015, 2520, 2500, 3015, 3020, 3025 and 3000 series strainers.In 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 08/01/01(1) - 2-111 - Drain Plug O-ring After 08/01/01*Sold as an Individual