Engines with 1pc Rear Main seal & 1PC oil pan gskt. For Engines with balance shafts. Compatible with Mercury Marine 4.3L (155 hp and 175 hp), 4.3LX (175 hp, 180 hp, and 205 hp), 175 (175 hp with 2-barrel carburetor), 185 (185 hp with 2-barrel carburetor), and 205 (205 hp with 4-barrel carburetor). Compatible with OMC marine models 4.3L (175 hp with 4-barrel carburetor), 4.3L (180 hp with 4-barrel carburetor) and 4.3L (205 hp with 4-barrel carburetor). Compatible with Volvo-Penta marine models 4.3 Gi (205 hp), 4.3 GL (190 hp), 4.3 GS (205 hp), 430, 430 DP (155 hp), 431 (180 hp and 205 hp), 432 DP (164 hp), and 434 DP (187 hp). This listing is for a full gasket set compatible replacements for 1985-2002 Chevrolet GM 4.3L 262 cid standard rotation V-6 Marine engines with a 1-piece rear seal. Compatible with engines using a balance shaft. These engines are commonly found in Mercury Marine, OMC, and various other marine applications. Gasket set contains all gaskets pictured and needed for engine re-assembly but may not have all accessory gaskets. Buyer may need to contact their local marine dealer for these miscellaneous gaskets. P/N 17211 + 17116