Sierra International 18-6847 Alternator 18-6847. 0GLP GSP GSM/4.3GXI/5.0GXI SI/5.7GI GXI OSI and SXI Volvo Penta applications. It is interchangeable with Arco 60076 and Volvo Penta 2655301 3862613. Each Sierra product meets or exceeds the original...