For Use With Exhaust Manifold Risers; Fits Mercruiser GM V-6 229 And 262 Cubic Inch/ GM Small Block V-8 305 To 350 Cubic Inch/ GM Big Block V-8 454 Cubic Inch Engines; With Exhaust Elbow GasketFor Use With Exhaust Manifold Risers
Fits Mercruiser GM V-6 229 And 262 Cubic Inch/ GM Small Block V-8 305 To 350 Cubic Inch/ GM Big Block V-8 454 Cubic Inch Engines