Polk Ultramarine 7.7" Speakers - Black EPAHOUR3 It meets all outboard and

It meets all outboard and personal watercraft manufacturer recommendations for use of NMMA TC-W3 oils in premix or oil-injected 2-stroke applications

Replacement cap & chain is P/N 6074

UV-stabilized polypropylene construction

Double-ended cordsets are used for trunk or drop lines and make for a secure connection and simple time saving installation

It is compatible with rigid holding tanks up to 36 inches deep

Polk Ultramarine 7.7" Speakers - Black EPAHOUR3 It meets all outboard andUltramarine 7. 7" Speakers Black Polk's Ultramarine speakers are designed to produce maximum sound in marine applications. Featuring "Air Suspension" technology and high temperature voice coils, the Ultramarine family of speakers will crank up to 200 watts. These powerful 7. 7" marine speakers have rugged, removable sport grilles that stand up to sunlight and moisture. Also included is LED lighting built into the cone of the speaker. Underneath,