T-H Marine Grommets & Wire Covers

T-H Marine Grommets & Wire Covers: Protecting Your Boat's Wiring Where It Matters Most

When it comes to keeping a boat's electrical system clean, safe, and long-lasting, the details matter — and few details are more overlooked than where wires and cables pass through bulkheads, panels, and deck surfaces. T-H Marine, a family-owned marine accessories manufacturer dedicated to the boating industry since 1975 , brings the same engineering care to its grommets and wire covers as it does to its flagship products like jack plates and trolling motor accessories.

Purpose-Built for the Marine Environment

T-H Marine produces thousands of products across many categories, and their boat accessories are found on virtually every recreational boat built in the United States — from bass boats and pontoon boats to offshore fishing boats and center consoles. That deep OEM presence means their grommets and wire covers are engineered to real-world standards, not afterthoughts.

T-H Marine offers two core products in this category that address different stages of cable protection:

• Utility Grommets (UG-1-DP & UG-2-DP): Molded of tough, flexible vinyl, these grommets are designed for multiple uses on boats — including cable pass-throughs, landing net holders, fishing rod support, stern light holders, and more. For bulkhead pass-throughs, simply mount and run cables or wires through to prevent chafing. Available in two sizes — with a 2-3/8" hole and 3-3/8" OD (UG-1-DP) or a 1-3/4" maximum hole and 2-3/4" OD (UG-2-DP) — both sold in pairs and finished in black.
• Cable Boot Grommets: These fit underneath a cable boot to provide an internal sleeve that protects cables, hoses, and wires from chafing against a rough hole cut or sharp edge, and fits into pass-through holes for steering, electrical, and control cables for a smooth, carefree fitting.

Versatility That Goes Beyond Basic Wire Management

T-H Marine utility grommets can be used in either a horizontal or vertical orientation , giving boat builders and DIY riggers flexibility when routing wiring in tight spaces. The Cable Boot Grommet is specifically designed to fit snugly underneath T-H Marine cable boots, with the internal sleeve preventing chafing against sharp edges and hole cuts to ensure longevity for cables and wires.

This system approach — where the grommet and the cable boot work together as a matched pair — reflects T-H Marine's broader design philosophy. As a family-owned and operated corporation, T-H Marine takes pride in every product that leaves their factory, and their team consists of boaters and fishermen who design products for boaters and fishermen.

Why Choose T-H Marine for Grommets & Wire Covers?

T-H Marine's wholly owned subsidiary, Innovative Plastics, specializes in custom plastic injection molding and injection mold building — meaning the brand maintains direct control over the quality and consistency of its molded vinyl components. For a component as critical as a wire pass-through grommet, that manufacturing precision translates directly into a tighter fit, better protection, and longer service life on the water.

Whether you're re-rigging a bass boat, tidying up helm wiring on a center console, or completing a full boat restoration, T-H Marine grommets and wire covers are a straightforward, reliable solution trusted by OEM boat builders and weekend anglers alike. Explore the full range of T-H Marine marine accessories or browse all grommets and wire covers to find the right fit for your application.