Scepter Under Seat Portable Marine Fuel Tank - Available in 3 Gallon and 6 Gallon

Keep extra fuel within easy reach without giving up cockpit space. The Scepter Under Seat Portable Marine Fuel Tank is a low-profile, crush-resistant tank built to slide beneath a boat seat or into a tight storage compartment, giving small boats, tenders, and auxiliary outboards a reliable backup fuel supply. Each tank is molded from a one-piece, 5-layer HDPE shell that resists rust, corrosion, cracking, and UV breakdown, and includes a built-in fuel sight gauge so you can check your level at a glance without opening the cap. A 2-way vented cap releases pressure above 5 PSI to reduce warping and fuel odor, and the standard 1/4 NPT marine fitting works with common fuel line connectors. Choose the 3 gallon size for dinghies, small runabouts, and light auxiliary use, or step up to the 6 gallon size for longer trips and larger backup fuel reserves.

Specifications

• Brand: Scepter
• Tank Type: Above deck / under-seat portable tank
• Material: Polyethylene (PE), 5-layer HDPE construction
• Color: Red
• Fitting: Standard 1/4 NPT marine tank fitting
• Cap Type: 2-way vented cap, releases pressure above 5 PSI
• Fuel Compatibility: Gasoline, diesel, ethanol and alcohol-blended fuels
• Certifications: EPA, ABYC, and CARB compliant
• Warranty: 1 year

Sizes & Options

This tank is available in two capacities. The 3 Gallon tank (10506) is the more compact option at 19.3 in x 12.2 in x 6.8 in and 4.95 lbs empty, ideal for under-seat mounting on smaller boats where space is tight. The 6 Gallon tank (10511) holds double the fuel for longer runs or as a larger backup reserve, while still fitting common under-seat storage areas. Both sizes share the same built-in fuel gauge, vented cap, and 1/4 NPT fitting, so match your choice to the storage space available and how much extra range you need.