Add to Favorite Sellers. Ford E6TN6250AA Camshaft 254/268 Diesel Engine. Ford E6TN6250AA Camshaft From Ford 254/268 Diesel Engine with Block Number E6nn6015cd Used Part. “As Is” Condition Parts are not guaranteed to be in good working order May need to be repaired. Thank you for looking! We appreciate the opportunity to earn your business. Free free to ask any questions you may have.