Add to Favorite Sellers. Ford E6NN942SBC2 F426B Manifold 254/268 Diesel Engine. Ford E6NN942SBC2 F426B Manifold From Ford 254/268 Diesel Engine with Block Number E6nn6015cd Used part, In Good Working Condition. Thank you for looking! We appreciate the opportunity to earn your business. Free free to ask any questions you may have.