Sierra 18-7070 Carburetor Kit for Rochester 2 Barrel Sierra high-quality engine parts are designed to meet the specifications of OEM. Sierras carburetor kits utilize superior ethanol-resistant materials matched with unsurpassed quality control. For Rochester 2 BBL Fits 1964-1983 MCM GM 4 6 Cyl Engines Interchangeable with GLM 76068 Holley R-84041AA Mallory 9-37616 Mercruiser Stern Drive 1397-7542 1397-8872 1397-2637 1397-2072 1397-7543 1397-3464 OMC Stern Drive 982384 383615 Rochester 17059050