Manuals are in used condition and may have initials, names, writing, grease or dirt on or in them. Some may have slight moisture damage or pages may be torn or missing. In all cases, we attempt to send as complete as possible. These appear complete and in nice condition. Detroit Diesel Engines, Series 53. 253 353 453 653. Parts Catalog Manual, Books 1-4, 6SP124 – 1978.