(2 PACK) 4.10/3.50-4 Inner Tube with TR-87 Bent Valve Stem,Replacement for Hand Trucks, Dolly, Lawn Mowers, Wheelbarrows, Generators, Utility Carts

What It Is

This is a 2-pack of 4.10/3.50-4 inner tubes with a TR-87 bent valve stem, designed to replace worn or punctured tubes in small pneumatic tires on hand trucks, dollies, lawn mowers, wheelbarrows, generators, and utility carts.

Fitment & Compatibility

• Tire size: Fits any tire marked 4.10/3.50-4, 3.50-4, or 4.10-4. Measure your tire’s sidewall to confirm.
• Valve stem: TR-87 is a short, 90-degree bent metal stem common on small equipment. Check your wheel’s valve hole location and clearance—straight stems won’t fit.
• Machine types: Works on walk-behind mowers (e.g., Toro, Honda, Craftsman), wheelbarrows, generator carts, and hand trucks with 4" diameter wheels. Not for zero-turn or riding mowers with larger tires.
• OEM vs aftermarket: No brand-specific fit—this is a universal size. If your original tube has a straight or longer stem, this may not fit without modification.
• Measure before buying: Confirm your tire’s inner diameter (4") and the valve hole position. If the stem is too short or angled wrong, installation will be difficult.

Key Things to Know

• Quality: Budget tubes; some users report thinner rubber than OEM. Fine for light use, but may puncture more easily on rough terrain.
• Installation difficulty: Moderate. You’ll need tire levers and a compressor. The bent stem can be tricky to seat—lubricate the tube and rim with soapy water.
• Common gotcha: The TR-87 stem may not clear the wheel hub on some mowers. Test fit before fully inflating.
• 2-pack value: Good for replacing both front tires on a mower or keeping a spare, but check if your machine uses the same size on all wheels.

Should You Buy It

Buy this if you need a cheap, functional replacement for a 4.10/3.50-4 tube on light-duty equipment like a hand truck or wheelbarrow, and you’re comfortable with basic tire work. Skip it if you need heavy-duty durability for a commercial mower or generator cart used on rough ground—invest in a thicker, brand-name tube instead.