Mercury – 300 Hour Maintenance Kit | L6 Verado EFI Series | Marine-Grade Components | 8M0133617Mercury 200 300 HP 300 Hour Maintenance Kit L6 Verado EFI Series Marine Grade Components 8M0133617 Overview Most boaters will tell you theres nothing quite like the confidence that comes from a well maintained engine. When you turn the key and your Verado wakes up without hesitation, theres a calm satisfaction that settles in the kind you only get from staying ahead on your service schedule. The Mercury Marine part 8M0133617 maintenance kit is built