Outer rear axle shaft oil seal pair. 8N prior to s/n 486753. Priced & Sold only in pairs. A8NN4251A-PAIR$24.51 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com