AR-PRO 13 x 4.00-6'' [4.10/3.50-6''] Heavy Duty Replacement Inner Tube with TR-13 Straight Valve Stem (2-Pack) - for Wheelbarrows, Mowers, Hand Trucks and More

What It Is

This is a heavy-duty replacement inner tube (two-pack) sized 13 x 4.00-6’’ (also fits 4.10/3.50-6’’ tires) with a TR-13 straight valve stem. It’s designed for wheelbarrows, lawn mowers, hand trucks, and small utility trailers that use a 6-inch rim.

Fitment & Compatibility

• Tire size: Fits tires marked 13 x 4.00-6, 13 x 4.10/3.50-6, or 4.10/3.50-6. Measure your tire’s sidewall stamp—don’t guess by rim alone.
• Rim diameter: 6 inches only. Verify your rim’s actual diameter (center to center across the hole, not the outer edge).
• Valve stem: TR-13 straight stem (about 1.5 inches long). Works with most standard wheelbarrow and mower rims. If your rim has a deep offset or a tight center hole, check that the stem clears the rim edge.
• OEM vs aftermarket: Universal fit. No brand-specific compatibility issues, but confirm your tire’s load rating (this tube is rated for light-to-medium duty, not heavy commercial loads over ~300 lbs per tire).

Key Things to Know

• Installation tip: Tube can twist inside the tire if not inflated slightly before mounting. Inflate to ~5-10 psi first, then seat it evenly.
• Valve stem location: Tube is centered—works for most machines, but check your rim’s valve hole position (some mowers have offset stems). If yours is offset, you may need a 90-degree valve.
• Durability: Heavy-duty butyl rubber resists punctures better than standard tubes, but still prone to pinch flats if underinflated or over-tightened on the rim.
• Two-pack value: $12.99 for two is a solid deal if you have multiple machines or want a spare. Single tubes often cost $8-10 each.

Should You Buy It

Buy this if you need a reliable, affordable inner tube for a 6-inch wheel on a push mower, wheelbarrow, or hand truck and don’t require a specialty valve or extreme load capacity. It’s a solid value for light-to-medium use, but skip it if you’re running heavy commercial equipment (e.g., 400+ lb loads) or need a 90-degree valve stem.