OMC 121731 0121731 305981 0305981 Lower Unit Water Passage Swivel Housing Nut Oil Pans just ask & i'll be

just ask & i'll be happy to look into it further

GM part #14088640 (You may only see the 8640 on this which is normal for some of the later ones)

Equivalent / Related / Similar Part Numbers:

Item Details (General Applications)

OMC 121731 0121731 305981 0305981 Lower Unit Water Passage Swivel Housing Nut Oil Pans just ask & i'll bePart Number(s) Included 121731 0121731 Nut (Swivel Housing or Water Passage Housing Stud) 305981 0305981 Washer You get a set of 6 of each as pictured General Application Compatibility Would have been found on Various OMC applications, but mainly to attache the water passage housing on the lower unit of the Cobra Drives (1986 1993) and the Swivel Housing on the Mechanical Shift OMC Stringer Drives (1978 1985) Other Details Freshwater Used Parts