Avery - Fits: Avery: A, BF, R; Replaces: 113119 Minneapolis Moline - Fits: BG (with HERCULES 133 C.I. ENGINE); Replaces: 26818B Oliver - Fits: OC-3 (4 CYL), Crawler: HG White - Replaces: 113079, 113119, 113315 Manifold measures 10" center to center on the outside bolt holes. The overall width is 14-7/8". The exhaust pipe hole measures 1.500". This does not take a threaded pipe, it just slips into the manifold. Also fits following Hercules engines: IXA, IXB, IXB-3, IXK3 all with 133 cubic inch Hercules gas engine. Also fits Gibson Model H.