Yamaha YSC-10191-10-0C Exhaust Manifold 10191100 V8 5.0L 5.7L STBD GM 1989-1990 25hp You can either use your

You can either use your existing one or order a new replacement to use/install your propeller properly

i believe generally found in 1981-1992 Models (then superceded to 816729)

3LXH Gen+ / 1987-1998

8L 170hp V6 / 4

18-2150 (Sierra)

Yamaha YSC-10191-10-0C Exhaust Manifold 10191100 V8 5.0L 5.7L STBD GM 1989-1990 25hp You can either use yourPart Number(s) Included Yamaha YSC 10191 10 0C Exhaust Manifold (GM V8) Starboard Right Side Manifold (Based on the installed water fitting orientation) Stamped 10191100 General Application Compatibility All Yamaha GM V8 5. 0L 305 & 5. 7L 350 Sterndrive Applications 1989 1990 Other Details Freshwater Used Parts No Cracks or Welds Purchase with confidence!