Attwood Mercury Fuel Line Kit - 3/8" Diameter x 6' Length (Pre-1998)

The Attwood Mercury Fuel Line Kit – 3/8" Diameter x 6' Length (Pre-1998) is an OEM-spec replacement fuel delivery system designed for pre-1998 Mercury outboard motors. After thousands of hours on the water, fuel lines degrade from ethanol exposure, UV damage, and thermal cycling, leading to leaks and fuel system failures at the worst moments. This Attwood kit replaces that cracked or deteriorating line with marine-grade tubing that meets Mercury's original specifications, restoring fuel flow integrity and engine reliability.

Built with 3/8-inch diameter reinforced hose, this six-foot length accommodates typical routing from tank to engine on center-console and cabin boats. The tubing resists ethanol-blended fuel and saltwater environments—critical for both freshwater and inshore operations. Attwood's construction maintains consistent wall thickness and flexibility across temperature ranges, preventing brittle failure in cold starts and prolonged full-throttle runs. Pre-1998 Mercury engines use this specific diameter and connection standard, making direct fitment straightforward without adapter fittings.

This replacement is essential for anyone running a vintage Mercury two-stroke or four-stroke outboard that shows signs of line cracking, seepage, or fuel odor near the powerhead. Pre-1998 Mercury motors remain common in aluminum V-hulls and classic fiberglass sport boats, and securing OEM-compatible fuel line kits prevents mid-season breakdowns and keeps your engine running clean and safe. Installation requires basic hand tools and disconnection of old fittings—a straightforward swap that takes under an hour and eliminates the risk of fuel system contamination or vapor leaks.