Seapro electric switchable Exhaust Diverter 4" Small Block V8 - GM Mercruiser..
Electrically switchable Exhaust Diverter System 4" size. Diverter with internal flap. Designed for GM based engines5.0, 5.7, 6.2 Ltr. V8 | 305 - 350ccm | Small Block with center manifolds and risers / elbow ---- 1987yrs.