36-009 Oregon Ring Set .010 Features: Part Type and Specification: This is a .010" oversized piston ring set designed for Briggs & Stratton engines. The oversize ensures a precise fit in engines that have been bored .010" over standard for rebuilding or repair purposes. Engine Compatibility: Specifically fits 8 HP Briggs & Stratton engines with aluminum bore cylinders, commonly found in various outdoor power equipment including mowers, tillers, and generators. Cross-Reference Replacements: This Oregon 36-009 ring set replaces several Briggs & Stratton original part numbers, including: 391670 690018 91670 Also matches Oregon part number 36-007 Application Use: Ideal for restoring compression and engine efficiency during rebuilds or maintenance. It's an essential part for small engine technicians and DIY engine repairs.