Sierra’s 18-3906 Piston Ring is designed for use in Johnson and Evinrude outboard applications. It interchangeable with Johnson/Evinrude Outboard 385662, 396503, 439001, Mallory 9-54417, OMC Stern Drive 385662, 396503, 439001, and Wiseco 3520KD. Each Sierra product meets or exceeds the original equipment part it replaces.
Bore Size: 3.520
Interchangeable with Johnson/Evinrude Outboard 385662, 396503, 439001, Mallory 9-54417, OMC Stern Drive 385662, 396503, 439001, and Wiseco 3520KD
Includes two piston rings
Each Sierra product meets or exceeds the original equipment part it replaces
