OMC & VOLVO PENTA EXHAUST ELBOW RISER GASKET | GLM Part Number: 33810; Sierra Part Number: 18-0943; OMC Part Number: 351325; Volvo Part Number: 3850496 GLM Part Number: 33810; Sierra Part Number: 18-0943; OMC Part Number: 351325; Volvo Part Number: 3850496