Drain Plugs, Tubes & Accessories

Why Drain Plugs, Tubes & Accessories Matter

When it comes to RV and marine plumbing, few components carry more responsibility than drain plugs, tubes, and their associated hardware. A properly sealed drain plug is the difference between a dry bilge and a boat taking on water — or between a winterized RV system and burst pipes come spring. Whether you're securing a transom drain on a freshwater fishing boat, maintaining a motorwell, or servicing the plumbing on your RV, having the right plug or tube for the job is non-negotiable.

These components might seem simple, but the variety of materials, styles, and sizes reflects the wide range of real-world demands they face. Saltwater environments demand corrosion-resistant metals like brass, aluminum, or stainless steel. High-vibration applications require plugs that lock securely and won't back out underway. RV drain systems need components rated for outdoor temperature swings and chemical exposure from holding tank treatments.

What's in This Category

Our selection of drain plugs, tubes, and accessories covers the full spectrum of RV and marine plumbing needs:

• Boat drain plugs — including snap-tite, turn-tite, and garboard styles in brass, aluminum, and stainless steel
• Transom and motorwell drain tubes — in multiple lengths and diameters to fit varying hull thicknesses
• Drain fitting kits and flanging tools — for proper installation and watertight sealing
• Coolant and fluid drain tubes — for diesel truck and performance engine maintenance
• Drain plug washers and gaskets — to maintain reliable seals through repeated service cycles
• Bailer plugs and automatic drain plug sets — for self-draining hull designs

Key Considerations When Shopping

Before selecting a drain plug or tube, match the fitting style to your existing hardware — snap-tite and turn-tite plugs are not interchangeable. Pay close attention to outer diameter and length specifications, especially for drain tubes, since hull and transom thicknesses vary significantly between boat models. Material matters too: brass offers durability and corrosion resistance for most freshwater and light marine use, while stainless steel is the preferred choice for harsh saltwater conditions. Always check that replacement plugs are compatible with your existing drain fitting or flange to ensure a watertight seal.

Top Brands in Drain Plugs, Tubes & Accessories

Moeller is one of the most recognized names in marine drain hardware, offering an extensive lineup that includes snap-tite and turn-tite bailer plugs, transom drain tubes, motorwell drain tubes, garboard drain plug kits, and flanging tools in brass, aluminum, and stainless steel. Their product range is designed to work as a coordinated system — plugs, tubes, and fitting kits are engineered to pair together for reliable, leak-free installations.

Pacific Performance Engineering (PPE) brings its precision engineering background to drain plug accessories, most notably through drain plug washers and coolant drain tube solutions designed for diesel performance applications. Their compound washers feature an oil-resistant Viton rubber seal with a steel core, engineered to maintain a tight seal through multiple service intervals — a practical upgrade over standard crush washers.