Sierra 18-2748 Exhaust Boot

Sierra's 18-2748 Exhaust Boot features a 4" upper tube. It is designed for use with Mercruiser 120 and 140 stern drives and GM V6 and V8 engines. Use with Sierra's 18-1975-1 Riser with Exhaust Tube. Includes one exhaust boot per package. It is interchangeable with GLM 89120, Mallory 9-72805, and Mercruiser Stern Drive 32-44348, 32-44348001, and 32-44348T. Each Sierra product meets or exceeds the original equipment part it replaces.