Sierra 9253 Outboard Maintenance Kit Mercury - Mercury V6, Optimax, 3.0L, 2-Stroke O/B's, Fits with S/N's 1B227000 and up (non-pro models) HA5505 Mercury-Mercruiser 858805 CHECK VALVE

Mercury-Mercruiser 858805 CHECK VALVE

Mercury-Mercruiser 8M0072016 ECM

Two positions to switch water source from fresh water to an anti-freeze source

and the eye can be quickly and easily inserted into the lock or removed from it as needed

mounting hardware

Sierra 9253 Outboard Maintenance Kit Mercury - Mercury V6, Optimax, 3.0L, 2-Stroke O/B's, Fits with S/N's 1B227000 and up (non-pro models) HA5505 Mercury-Mercruiser 858805 CHECK VALVEDesigned to provide a one box solution ensuring best performance and reliability. Each kit is packaged in a premium full color Each time saving kit includes everything needed for regular maintenance at appropriate service intervals. High quality spark plugs pre gapped and ready for installation