Fuel Tank Bushing

A fuel tank bushing is a small but important part of any fuel storage system. Usually made of rubber or a similar flexible material, it fits into an opening in the fuel tank and acts as a seal, grommet, or cushion between the tank wall and whatever passes through it, such as a fuel valve, shut-off fitting, or fuel line connector. Although it costs little and is easy to overlook, a worn bushing can cause fuel leaks, air intrusion, and fuel starvation.

Why Fuel Tank Bushings Matter

Fuel tanks, particularly the molded plastic tanks used on lawn tractors, mowers, generators, and pressure washers, are constantly exposed to gasoline, heat cycles, vibration, and ultraviolet light. Over time, the rubber in a bushing can harden, shrink, crack, or swell. When that happens, the seal around the fuel fitting loosens, and you may notice:

• Fuel seeping or dripping around the valve or fitting
• A persistent gasoline odor near the tank
• Air being drawn into the fuel system, causing sputtering or hard starting
• Fittings that wobble or no longer sit firmly in the tank

Because gasoline is flammable, any leak at the tank deserves prompt attention. Replacing a degraded bushing is typically a simple, low-cost repair that prevents bigger problems and protects the surrounding components.

What to Consider When Choosing a Replacement

Bushings can look nearly identical while differing in small but critical ways. Keep these points in mind:

• Dimensions: Inner diameter, outer diameter, and thickness must match the tank opening and the fitting it holds. Even a small mismatch can leave a gap that leaks.
• Material: Fuel-resistant rubber is essential. Generic rubber can degrade quickly when exposed to gasoline and ethanol-blended fuels.
• Application: Confirm the part number against your engine or equipment model. Many bushings are specific to a given tank design or fuel valve.
• Condition of the fitting: Inspect the fuel valve or fitting when you replace the bushing. A damaged valve can compromise a new seal.

When installing, it helps to seat the new bushing in the tank opening first, then press the fitting into it until it is fully and evenly seated. Make sure the area is clean, and check for leaks after refilling the tank.

Brands in This Category

Briggs & Stratton is one of the best-known names in small gasoline engines, powering a wide range of lawn and garden equipment, generators, and pressure washers. Its genuine fuel tank bushings are made to original equipment specifications for the engines and equipment that use them, which helps ensure the fit and fuel resistance needed for a leak-free seal. For owners maintaining Briggs & Stratton-powered equipment, a matching OEM bushing is a straightforward way to restore the original fuel system integrity.

Keeping Your Fuel System Sealed

Routine inspection of fuel system seals is a smart habit, especially before storing equipment for the off-season or when you notice fuel odors. Check the bushing whenever you service a fuel valve, replace a tank, or swap fuel lines. Replacing a hardened or cracked bushing early is far easier than dealing with fuel damage, a fouled carburetor, or an unsafe leak later on.