Husqvarna 530069599 Fuel Return Line Kit for Small Engines

What It Is

This is an OEM Husqvarna fuel return line kit (part #530069599) that replaces the rubber hose routing excess fuel from the carburetor back to the fuel tank on small engines. It’s designed for walk-behind mowers, zero-turn mowers, and handheld equipment with pulse-style fuel systems.

Fitment & Compatibility

Before buying, confirm your engine uses a return line (not all small engines have one). Measure the existing hose inner diameter—this kit uses 1/8″ ID line. Check your model against Husqvarna’s compatibility list (fits many 100-300 series walk-behinds and some 500 series zero-turns). It is not a universal fit; it will not work on Briggs & Stratton, Kawasaki, or Kohler engines unless they use Husqvarna’s specific barbed fittings. Verify your carburetor has a return port (often a small brass barb near the fuel inlet). If your machine is pre-2010, confirm the tank nipple size matches the included 90-degree fitting.

Key Things to Know

• OEM quality – Made of ethanol-resistant rubber, not generic vinyl that cracks in a season.
• Installation difficulty – Easy (5–10 minutes) if you can access the carburetor and tank; requires small pliers and maybe a pick to remove old hose.
• Common gotcha – The kit includes one pre-cut length (about 12″) and two fittings. You may need to cut it shorter for compact engines.
• Not a fuel supply line – This is strictly the return line; don’t mix it up with the main fuel hose (which is larger diameter).

Should You Buy It

Buy this if your Husqvarna mower or trimmer has a brittle, cracked, or leaking return line and you want a perfect OEM match with no guesswork. Avoid it if you need a fuel supply line or if your engine uses a different hose diameter—buy a universal bulk hose instead.