5-Pack 2-Hole Fuel Tank Grommet Kit, Fuel Line Filter Assembly with Primer Bulb, Replacement for 4-Cycle Small Engines, Trimmers, Blowers, Lawn Mowers, Replaces OEM 17504-ZM3-003 17672-Z0H-003

What It Is

This 5-pack kit provides a complete fuel line refresh for 4-cycle small engines: two 2-hole fuel tank grommets, a fuel line filter, and a primer bulb. It’s designed for trimmers, blowers, lawn mowers, and similar equipment that use a standard pulse-style fuel system.

Fitment & Compatibility

Before buying, check these three things:

1. Grommet hole size – The 2-hole grommets fit tanks with a ~0.5-inch mounting hole. Measure your tank opening to confirm.
2. Fuel line diameter – This kit works with 1/8-inch (3.2mm) ID fuel line. If your machine uses 5/32-inch or larger line, you’ll need a different grommet.
3. OEM numbers – Replaces 17504-ZM3-003 and 17672-Z0H-003. Common on Honda, Briggs & Stratton, and many Chinese clone engines. Not for 2-cycle engines or machines with a separate fuel pump.

Key Things to Know

• Quality is decent for the price – The grommets are rubber, not silicone; they’ll last 1-2 seasons in normal use. The primer bulb is less durable than OEM Honda parts but works for occasional use.
• Installation is easy – No special tools needed. Remove old grommet, clean the tank hole, push in new grommet, then insert lines. The filter is pre-attached to one line.
• Gotcha: grommet fit – Some users report the grommet is slightly loose in thicker plastic tanks. A dab of silicone sealant can help, but avoid overtightening the tank cap.
• Kit includes extras – You get 5 grommets, so you have spares or can outfit multiple machines. The filter and bulb are single-use only.

Should You Buy It

If you need a quick, cheap fix for a leaking tank grommet or a clogged fuel filter on a 4-cycle trimmer or mower, this kit works. It’s not for heavy commercial use or odd-sized tanks, but for DIY maintenance it’s a solid value.