Hydraulic lift piston ("O" ring type): fits NAA, 1953-1954. Optional for 9N, 2N, 8N when used with "O" ring NAA533A & washer NAA473A. NAA530B$19.65 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com