OEM DETROIT DESEL Upper Fuel Manifold Assembly PN#5150560 NSN 2910-00-379-4261 These are hard to find and are at a great price Be sure to check out our store for your other needs. Save $$$$$ here COMPLETE SPECS: General Characteristics Item Description Steel, 18.500 in lg O/A, 1/4-18 npsf straight pipe thd both ends, four 0.180 in. dia holes located 1.688 in. C to C below horizontal tubing, holes spaced 5.750 in. C to C L2B11 11996