Yamaha - Shaft & bolt set - 99999-04127-00 Mercury-25HP-EFI-2012 Mercury and Mariner EFI 4-stroke

Mercury and Mariner EFI 4-stroke applications requiring this 100-hour service package

using heavy-gauge marine wire is critical to avoid voltage drops and dangerous overheating along the line

Ethanol-blended fuels can degrade older seals and gaskets over time

Big displacement engines rely heavily on spark quality

Yamaha - Shaft & bolt set - 99999-04127-00 Mercury-25HP-EFI-2012 Mercury and Mariner EFI 4-stroke99999 04127 00 SHAFT & BOLT SET WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.