IH 490 Disc Hyd Cyl Seal Kit#387881R92- 3 1/2" x 1 3/4" x16" Cyl.  New OEM seal kit. All Orings.  Backups. Wiper seals Useals included 

This fits 490 Disc main lift Cylinder  thst end gland nut unscrews Compare this @ your CaseIH dealer  @ $218.00My price $99.00 Plus $6.50 shipping USPS w Tracking number in Bubble Mailer Most seal kits shipped same day shipping.  Thanks for Looking Lee & Sons Farms & Hydraulic Shop