Description for part number 5N-3284 Description: Outer couplings are important components of crankshafts, which are the main driving shafts of internal combustion engines that receive reciprocating motion from the pistons and convert it to rotary motion Attributes: Cat® parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse. Compatible Models for part number 5N-3765 GEN SET ENGINE 3512 3516 3508 MARINE ENGINE D398A D398B D399 INDUSTRIAL ENGINE 3512 D398 D399 D398B 3516 3508 GAS ENGINE G398 G399