4.10/3.50-4" Tire Inner Tubes, 2 Pack Heavy Duty 4.10 3.50-4/410/350-4 Tube with Bent Valve Stem for Wheelbarrows, Lawn Mowers, Hand Trucks, 4" Cart, Tractors, Golf Cart, Dolly, Trailers

What It Is

A 2-pack of heavy-duty 4.10/3.50-4 inner tubes with a bent valve stem, designed to replace worn or punctured tubes in pneumatic tires on lawn mowers, wheelbarrows, hand trucks, garden carts, golf carts, dollies, and small trailers.

Fitment & Compatibility

• Tire size: Fits any tire marked 4.10/3.50-4 or 410/350-4. Also fits 3.50-4, 4.00-4, and 4.10-4 tires, but verify your tire’s sidewall stamp.
• Rim diameter: 4 inches. Measure the rim bead seat diameter (not overall rim width). Do not use on rims smaller or larger than 4".
• Valve stem: Bent stem (90-degree angle) suits tight clearance on mower decks or wheelbarrow hubs. Straight stem tubes will not fit here if your rim has a deep offset.
• Machine check: Works on most walk-behind mowers (Toro, Honda, Craftsman, MTD), utility carts, and wheelbarrows with 4" wheels. Not for zero-turn mower front tires (typically larger) or 3.50-5 or 4.10-5 sizes.
• OEM vs aftermarket: Universal aftermarket—no specific brand lock-in. If your original tube says 4.10/3.50-4, this is a direct replacement.

Key Things to Know

• Heavy-duty rating: Thicker rubber than economy tubes—better puncture resistance but slightly stiffer to install. Use a tire spoon or pry bar to avoid pinching.
• Installation difficulty: Moderate. Remove tire from rim, deflate old tube, insert new one, and re-seat bead. Bent stem can be tricky on deep rims—lubricate valve stem hole with soapy water.
• Common gotcha: Over-inflation (above 30 PSI) can cause tube to bulge or burst. Stick to 20–25 PSI for most mowers and carts. Check tire sidewall for recommended PSI.
• Valve stem orientation: Bent stem must point outward and align with the rim hole. If stem is misaligned after inflation, deflate and rotate the tube.

Should You Buy It

Buy this if you need a reliable, heavy-duty 2-pack for 4" wheels on mowers, wheelbarrows, or utility carts and want bent stems for tight clearance. It’s a solid value for DIY repairs—skip it if your tire size is non-standard (e.g., 4.10-5) or you need straight valve stems.