Heavy Duty 4.10/4.00/3.50-6 Thick 40% Inner Tube, 13x4.00-6 Tube with TR87 Bent Valve Stem for Wheelbarrows, Snow Blowers, Wagons, Carts, Hand Trucks, Lawn Mowers, Tractors and More (2 Pcs)

What It Is

This is a heavy-duty 40% thicker replacement inner tube designed for 4.10/4.00/3.50-6 tires, commonly used on wheelbarrows, snow blowers, lawn mowers, tractors, wagons, carts, and hand trucks. The TR87 bent valve stem allows easier inflation on tight-rim applications.

Fitment & Compatibility

Before buying, check your tire sidewall for the size marking—this tube fits 4.10/3.50-6, 4.00-6, and 13x4.00-6 tires. It does NOT fit standard 4.80/4.00-8 or larger tires. Measure your rim diameter (must be 6 inches) and verify the valve stem hole location on your wheel; the TR87 bent stem works best on rims with a centered or offset hole. This is an aftermarket part, not OEM-specific, so it fits most brands (Honda, Toro, John Deere, Craftsman, etc.) as long as the tire size matches.

Key Things to Know

• Quality & thickness: 40% thicker rubber than standard tubes reduces puncture risk, but still use a rim strip or flap to prevent chafing on rough steel rims.
• Installation: Moderate difficulty—requires removing the tire from the rim. Inflate tube slightly before inserting to avoid pinching. The bent valve stem may need gentle bending to align with the rim hole.
• Common gotchas: Over-inflation can cause bulging; recommended pressure is 20-30 PSI for most uses. The TR87 stem is longer than standard—ensure your wheel cover or hub doesn’t interfere.
• Pair includes two tubes: Useful for dual-wheel setups or as a spare.

Should You Buy It

Buy this if you need a durable, thicker replacement tube for a 6-inch rim tire on a wheelbarrow, snow blower, mower, or cart—especially if you’ve had frequent flats with standard tubes. Skip it if you need a precise OEM fit for a very specific machine or if your tire size is not listed.