The engine serial number is between the two front spark plugs and the left exhaust manifold, and the production code number is between the two rear plugs and the exhaust manifold, also on the left.Ĥ00, 430, 455 inch, all have the actual cubic inch that the block was cast for in the transmission mount saddle above the casting number. The engine serial number and the production code number are on the right side of the engine, to the rear of the distributor. The engine production code number is between the two forward branches of the right exhaust manifold, and the engine serial number is between the two rear branches. The production code number is between the left exhaust manifold and the two front spark plugs. The engine serial number is stamped on the front of the left cylinder bank. In addition, products compatible with the Bose Connect app, the Bose Music app, the Bose Sleep app, or the Bose Hear app will display the serial number in the app under Settings > Product Info. The production code number can be found on the crankcase between the frontĪnd middle branches of the right exhaust manifold. Serial numbers are 17-digits long (or 4-digits long for some headphones) and can include letters and numbers. The V6 engine production # is on the front of the block below the LH The production code number is stamped on the right side of the crankcase andĬan be viewed between the middle branches of the Will be necessary to remove the power steering pump bracket to view the The engine serial number is stamped on the left front face of the crankcase, The production code number is stamped upside down next to vehicle number. The engine number is stamped on the engine forward of the right cylinder head. Buick Engine Identification, where to find the numbers