The Sierra 18-7449 O-Ring is interchangeable with GLM 81570, Mallory 9-76581, and Mercruiser 25-97387. It features an ID of 4.487″ (114mm) and a width of 0.103″ (2.6mm). Package includes one O-ring. Each Sierra product meets or exceeds the original equipment part it replaces.
I.D.: 4.487″ or 114mm
Width: 0.103″ or 2.6mm
Interchangeable with GLM 81570, Mallory 9-76581, and Mercruiser 25-97387
Each package includes one O-ring
