The 1819351 lifter is interchangeable with the following: GLM 51510, Mallory 940910, Osco 56879, Volvo Penta 8553844, 856891. Each product meets or exceeds the original equipment part it replaces. Features: Interchangeable riser for Volvo V8 Center Rise Manifold. Meets or exceeds original equipment quality. For Volvo V8 Center Rise ManifoldSpecifications: Dimensions: 7.13 in H x 9.88 in W x 20.25 in LWeight: 18.64 lbs