Sierra 18-1935-1 Volvo Penta RiserSierra high-quality engine parts are designed to meet OEM specifications.Features: Material: Cast Iron; Hose ID: 4"; Use With: 18-1931-1 Manifold; 18-2971 Exhaust Manifold Gasket; 18-8510 Exhaust Elbow Mounting Kit; Includes: Bolt, Zinc 5/16-18 x 5 1/2 Grade NSS; Washer 18-4236; Gasket, Exhaust Riser 18-2971-1; Interchangeable With: Barr; VO-20-855384; GLM; 51510; HGE; 5384; Mallory; 9-40910; Osco; 56879; Volvo Penta; 855384-4; 856891;