Indmar Winged Drain Plug - 1/2" O-Ring

Product Overview

The Indmar 605176 Winged Plug is a purpose‑built marine drain plug designed for use in inboard marine engine systems, particularly those with tee‐fitting exhaust drain hoses. The plug features a winged head for easy manual handling and comes equipped with a ½″ O‑ring seal for reliable sealing.

Key Features & Benefits

• Winged Head Design: The winged (or “T‑style”) head allows for easy manual installation and removal — ideal when you’re working in tight engine compartments or need to service winterization drains.

• ½″ O‑Ring Seal: Ensures a secure and leak‑free fit when installed in the drain hose tee, helping prevent unwanted water ingress or loss of internal coolant/fluids during operation or storage.

• OEM Fitment: As an OEM part by Indmar, the plug is engineered to match the factory threads and tolerances of compatible Indmar engines and their associated drain systems. That ensures proper alignment, fit and performance.

• Simple and Cost‑Effective: A low‐cost component that plays an important role in seasonal maintenance (like winterization) and simple service tasks—keeping your boat engine system sealed and protected.

Application / Use Cases

• Ideal for the exhaust drain hose tee on many Indmar inboard marine engines (used in boat brands like Malibu, Moomba, Supra, etc.).

• Particularly useful during winterization / de‑winterization tasks — when you need to drain and reseal hoses and systems, this plug facilitates quick service.

• Also valuable for routine inspection/service of drain points: If the original plug is worn, lost, or leaking, swapping in the 605176 maintains proper sealing and prevents water intrusion or fluid drops.

Installation / Service Tips

• Before installing, inspect the O‑ring to ensure it's in good condition (no cuts, deformation, or hardening). A compromised O‑ring can result in leaks.

• Clean the thread and mating port to ensure no debris or corrosion is present; this helps maintain a good seal.

• Tighten the winged head snugly by hand; do not over‑torque, as you'll risk crushing the O‑ring or damaging threads. Because of the winged design you should be able to remove/install it without tools.

• If in a marine environment (saltwater usage) consider applying a marine‑grade anti‑corrosion lubricant on threads (if recommended by your engine maker) and inspect periodically for seepage.

• When winterizing, double‑check that the plug is properly seated and sealed after draining — a leaking plug can allow water intrusion in storage, leading to corrosion or freeze damage.

Why It Matters

A small part, like the 605176 winged plug, may not look glamorous—but in marine service, every seal matters. A failed drain plug can allow water intrusion into critical systems, cause fluid loss, or complicate future service. Using the correct OEM‑spec plug maintains the integrity of factory‑designed drainage and sealing points. It’s an inexpensive item that supports reliability, ease of maintenance, and protection of your investment.

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