Sierra 18-1971 90 Degree Exhaust Elbow with 3" Outlet

The Sierra 18-1971 Exhaust Elbow features a 90 degree down angle and a 3 inch outlet. Designed for MCM 140 (1966-1982), 470 (1976-1977), 165 and 200 in-line 6 cyl. It is also designed for MCM Ford V-8 engines and MCM GM V-8 (305 and 350 cid) engines (1982 and older). Interchangeable with the following: GLM 51120, Mallory 9-40558, Marine Power 0993-001, Mercruiser Stern Drive 76351A04, 76351A2, 76351A1, 60426A1, 49964A2, 49964A1, Osco 6351, Barr MC 20 76351, and MC-20-60426. Each Sierra product meets or exceeds the original equipment part it replaces.