Riser for OMC applications. It was used on log style manifolds for GM and Ford 1978 and newer with Rear Log Style manifolds/risers. It will fit Barr # OMC-1-912441 & Barr # OMC-1-912442 for GM small block. Comes with riser gasket and mounting hardware to mount to the manifolds.
Replaces: OMC # 909863; Osco #s: 9863, 9863-T; GLM # 51320; Sierra # 18-1921; Mallory # 9-40610
Barr Manifolds and Risers come with a 3-year limited warranty (PDF)!