Rear Crankshaft Seal Replacement 12665076 - Genuine GM Seal Assembly, Crankshaft Rear Oil OE Crankshaft Seal 12665076 These original equipment crankshaft seals have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. 2014-2022 GM Crankshaft Rear Oil Seal 12665076 | GM Parts Center Manufactured to GM OE specification for fit, form, and function Part number 12665076 is specifically engineered to withstand the heat and pressure of your engine while creating a tight seal at the crankshaft... ACDelco GM Original Equipment Engine Crankshaft Seals help help maintain the crankcase seal by sealing the openings on either end of the crankshaft, and are GM-recommended replacements for your vehicle's original components. Crankshaft Rear Oil Seal - GM (12665076) - GM Parts Center International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.