Mercury - Tool-prop nut - 91-8M0171389 Yamaha and Mercury Outboard Covers - Holiday Sales Event • Cooling System Protection –

• Cooling System Protection – Helps keep the cooling system sealed so water circulates correctly

This product has been superseded by: YF1-89617-29-53

Oversized Zinc Plated Steel Hook

This unique system ensures a tight and secure fit that prevents annoying rattling while underway or trailering

If your boat runs in the 20–30 HP range and you want steady acceleration

Mercury - Tool-prop nut - 91-8M0171389 Yamaha and Mercury Outboard Covers - Holiday Sales Event • Cooling System Protection –Tool prop nut 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.