CMOOD 5/16" ID Fuel Line Hose SAE 30R7 — 25 ft NBR Rubber, 150 psi Fuel-Compatible

The CMOOD 5/16" ID SAE 30R7 fuel line hose is a 25-foot NBR rubber hose rated for 150 psi working pressure, engineered for fuel, emission and return-line applications with broad chemical compatibility.

This hose is built to serve as a reliable, multipurpose fuel line for vehicles, small engines, and equipment that require a 5/16" inner diameter. Manufactured from NBR (nitrile butadiene rubber), it resists gasoline, diesel, lubricants and common ethanol blends while meeting SAE 30R7 construction standards. With a practical length and a wide temperature band, it’s intended for repair shops, hobby mechanics and fleet maintenance tasks where a flexible, fuel-compatible line is required.

What applications is this 5/16" hose suitable for?

The CMOOD 5/16" fuel hose is designed for multiple roles: primary fuel lines, fuel return lines, PCV and emission control lines, and small-engine fuel delivery. Its SAE 30R7 specification makes it suitable for many automotive and light industrial installations where compatibility with fuels and blends is essential.

• Primary fuel delivery and return line use in cars, trucks, tractors and ATVs
• PCV and emission control plumbing on older and modern systems
• Small-engine and generator fuel connections
• Works with unleaded gasoline, diesel, E-10 and E-85 blends

How does the hose handle pressure and temperature extremes?

This hose carries a 150 psi working pressure and a 500 psi burst rating, giving a robust margin for typical fuel system demands. Its operating temperature range spans -40°F to 257°F (-40°C to 125°C), allowing it to perform in cold startups and hot engine compartments without rapid degradation.

• 150 psi continuous working pressure for standard fuel systems
• 500 psi burst pressure for added safety margin
• Temperature range suitable for storage and engine bay installations
• Resists hardening and cracking across stated temperatures

What materials and sizes define this hose?

Constructed from NBR rubber, the hose combines oil and fuel resistance with flexibility for routing through tight engine bays. The inner diameter is 5/16" (0.3125") and the outer diameter measures approximately 0.55" (14 mm), supplied as a continuous 25-foot length for cutting to fit.

• Inner diameter: 5/16" (0.3125") for common fuel fittings
• Outer diameter: ~0.55" (14 mm) for clamp and connector selection
• Length: 25 feet of continuous hose for multiple runs or spares
• Material: NBR rubber meeting SAE 30R7 performance characteristics

How do I install and maintain this fuel hose safely?

Installation follows standard best practices: cut cleanly, secure with appropriate clamps, and route away from high heat and sharp edges. Inspect regularly for wear, swelling, or hardening, and replace any sections showing damage or fuel seepage to maintain safe, reliable operation.

• Use sharp hose cutters for square, burr-free ends
• Choose fuel-rated clamps sized to the 0.55" OD
• Route away from exhaust manifolds and moving parts
• Perform visual checks and replace at first sign of damage

Who is this for? Mechanics, hobbyists and fleet technicians who need a dependable, fuel-compatible line for repair and maintenance will find this CMOOD 5/16" hose practical and cost-effective. It’s well suited for anyone replacing degraded lines, fabricating custom fuel systems, or keeping spare hose on hand for emergency repairs. Buy with confidence knowing the product is intended for common automotive and small-engine fuel uses; follow local regulations and manufacturer guidance when installing fuel system components.