Outer rear axle shaft oil seal pair. 8N s/n 486753 & up, NAA. Priced & Sold only in pairs. D5NN4115A-PAIR$13.34 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com