3/8'' Marine Fuel Hose Feed Line Rubber Type A1-15 / SAE

The CULMKARI 3/8" Marine Fuel Hose (Type A1-15, SAE J1527) is a 5-foot rubber feed line built for supplying gasoline, diesel and E85 to marine engines with reliable flexibility and corrosion-resistant material construction.

This fuel hose is designed for boaters, ship technicians and marine equipment installers who need a compact, standards-compliant line that resists fuel degradation and stands up to the salty, moving conditions on watercraft. Constructed with an NBR inner tube for fuel resistance and an NBR+PVC outer cover for abrasion and weather protection, this hose balances flexibility and durability while meeting SAE J1527 specifications.

What does SAE J1527 Type A1-15 compliance mean for my boat?

SAE J1527 is an industry guideline for marine fuel hoses that governs fuel compatibility, pressure performance and resistance to environmental factors. Type A1-15 indicates the hose is manufactured to resist common liquid fuels and to handle standard marine fuel system demands.

• Meets SAE J1527 handling requirements for gasoline, diesel and E85.
• Manufactured to Type A1-15 tolerances suitable for typical marine fuel systems.
• Designed to resist fuel-induced swelling and softening over time.

How will this hose perform in marine conditions and tight spaces?

The hose’s NBR inner and NBR+PVC outer layers provide fuel resistance plus protection from abrasion, UV and salt spray. With a 3/8" (9.5 mm) ID and 17 mm OD, it’s slim enough for confined routing yet robust enough for regular fueling cycles.

• Minimum bending radius 80 mm for routing around fittings and bulkheads.
• Flexible rubber construction eases installation in cramped areas.
• Outer cover resists chafing and weather exposure on decks and engine bays.

What are the hose dimensions and which engines or fittings will it fit?

This line has an internal diameter of 3/8" (9.5 mm) and an outer diameter of approximately 17 mm, supplied as a 5-foot length for feed-line use. Those dimensions suit many small to medium outboard and inboard engine fuel systems; pair with compatible 3/8" clamps and fittings for a secure connection.

• Inside diameter: 3/8" (9.5 mm) — standard for many marine fuel fittings.
• Outer diameter: ~17 mm — check clamp and bracket compatibility before final install.
• Length: 5 ft — ideal for feed lines, tank-to-engine runs, and shorter replacement segments.

How easy is installation and what support is available?

The CULMKARI hose is user-installable with basic tools and hose clamps; its flexibility reduces the effort needed to position and secure the line. If you need guidance, the manufacturer points to installation videos and provides responsive customer support to answer sizing or routing questions.

• Installable with standard hose clamps and hand tools.
• Manufacturer offers troubleshooting and sizing guidance within business hours.
• Online installation videos available to demonstrate routing and clamp placement.

Who this is for: This 3/8" CULMKARI marine fuel hose is aimed at boat owners, marine mechanics and equipment installers who need a short, standards-compliant feed line for gasoline, diesel or E85. It’s well suited for small to medium marine engines, tender rigs, and as a replacement feed line where a durable, flexible hose that resists fuel and marine conditions is required. Choose this hose when you want a compact, regulated solution with industry-standard sizing and supportive customer service for installation questions.