Countershaft, for tractors: 600, 700, 800, 2000, 4000, (1955-64); 2000, 3000, 4 speed w/trans. PTO (1965-70). Can replace NDA7111C. C5NN7N109A$229.20 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com