GICOOL 4.00-6 Replacement Inner Tube, 2 Pack with TR-13 Valve Stem, Heavy Duty, For 13" Tires Wheelbarrow Garden Utility Wagon Go Cart Lawn Mower

What It Is

This is a 4.00-6 heavy-duty inner tube with a TR-13 (snap-in) valve stem, sold as a 2-pack. It’s designed to replace a punctured or worn tube inside 13-inch tires commonly found on wheelbarrows, garden wagons, go-karts, and lawn mowers.

Fitment & Compatibility

Before buying, confirm three things:

• Tire size: This tube fits tires marked 4.00-6 (4 inches wide, 6-inch rim diameter). It does not fit 4.10/3.50-6 or 4.80/4.00-8 sizes—measure your tire sidewall stamp.
• Rim diameter: Must be exactly 6 inches (measured bead seat to bead seat). Common on 13” overall tire diameters (e.g., 13x5.00-6).
• Valve stem: TR-13 is a straight, metal snap-in valve (1.6” long, 0.625” diameter hole). If your rim uses a TR-6 or TR-87 (bent or short valve), this tube will not seat properly.

No brand-specific fitment—this is a universal aftermarket tube. Works with most wheelbarrows, garden carts, and mowers that use a 4.00-6 tire, including many John Deere, Cub Cadet, and Husqvarna utility models. Check your tire sidewall for “4.00-6” before ordering.

Key Things to Know

• Installation difficulty: Moderate. You’ll need tire irons or pry bars to separate the tire bead from the rim. Inflate the tube slightly before inserting to avoid pinching.
• Durability: Heavy-duty rubber (approx. 1.5mm wall thickness). Holds up well against thorns and rough terrain, but not puncture-proof—use with a tire liner for extra protection.
• Valve stem note: The TR-13 is straight and may rub against the rim if the hole is too tight. File the rim hole slightly if needed. Do not twist the tube when tightening the valve nut.
• 2-pack value: Common failure point is valve stem damage, not tube wall leaks. Having a spare saves a second trip to the store.

Should You Buy It

Buy this if you need a reliable, affordable replacement for a 4.00-6 tube on a wheelbarrow, garden wagon, or lawn mower. It’s a solid value for the price and rating, especially if you maintain multiple machines with the same tire size. Skip it if your tire is 4.10/3.50-6 or uses a bent valve stem—those require a different tube.