Alocs Manual Vent Gas Cap for Old Style Portable Boat Tanks – 621501-10 Replacement

Alocs Manual Vent Gas Cap for Old Style Portable Boat Tanks

The Alocs manual vent gas cap is crafted for classic portable fuel tanks used on small boats, including well known Moeller and Tempo styles. Its vented design helps regulate air flow as you fill, rest, or transport, while the twist valve lets you adjust ventilation with simple, one handed motion. The result is a secure seal that minimizes leaks and splashes during handling, yet remains easy to operate when you need a quick vent or seal.

Built for durability on the water, this cap uses a high hardness plastic that resists corrosion and aging. It feels sturdy in the hand and stands up to regular marine exposure, so you can rely on a dependable cap season after season. The no tools required installation means you can swap or replace parts without extra equipment, a small relief when you are out on the dock or shoreline.

Key benefits at a glance

• Manual venting lets you open or close the vent with a simple twist, no tools needed.
• Leak resistant fit with precise threading helps keep fumes and moisture contained.
• Corrosion resistant construction stands up to sea spray and sun, promoting longer life.

Wide compatibility

The cap is designed to work with a broad range of portable boat tanks and is commonly used with older style tanks. It supports many model families and tank sizes, including 12 gallon, 6 gallon, and 3 gallon configurations. It also fits various plastic tanks from different brands, making it a versatile replacement part for several setups you may encounter on the water.

• Compatible with several popular plastic tanks from major brands, including various 0311xx, 6200xx, 6300xx, and 7300xx series models.
• Simple, tool-free installation that facilitates field replacements and quick maintenance.

Quality you can rely on

Designed for marine use, the cap resists rust and maintains a reliable seal even in challenging conditions. The combination of sturdy materials and careful design supports consistent venting performance when you need it.

How to use

1. Guide the cap onto the tank opening until it sits flush.
2. Twist the cap to vent when needed, then twist again to reseal.
3. Check the seal periodically and replace if you notice wear or cracking.

Care and longevity

Avoid overtightening and direct sunlight when not in use to preserve the seal and extend life. Regular inspection helps maintain venting performance across seasons.