This is a pair of silicon O-rings for the exhaust adaptor. It is a replacement part for the following O.S. engines (but not necessarily limited to these engines): O.S. .91 VR-DF (both the small and large head versions) O.S. .65 VR-DF
This Package Includes: (2) Exhaust O-rings - These O-rings are installed around the exhaust adaptor (the exhaust adaptor is the bolt-on exhaust piece that turns the exh- aust port into a round port).
