AR-PRO 4.80/4.00-8" Heavy Duty Inner Tube with TR87 Angled Valve Stem for Wheelbarrows, Wagons, Mowers, Hand Trucks, Go Kart and More 480/400-8 4.80-8 Tires (1-Pack)

What It Is

This is a heavy-duty inner tube designed to replace a punctured or leaking tube in tires sized 4.80/4.00-8. It fits wheelbarrows, lawn mowers, garden wagons, hand trucks, and small go-karts—basically any machine that uses a 4.80-8 or 4.00-8 tire.

Fitment & Compatibility

Before buying, confirm your tire’s sidewall markings. It must say 4.80-8, 4.00-8, or 4.80/4.00-8. This tube also fits 4.10/3.50-8 and 4.00-8 tires, but double-check clearance with your rim width (standard is 3–4 inches). Not for tubeless rims. Works with most OEM and aftermarket wheels on push mowers, zero-turn mowers, and utility carts. Measure your tire’s inner diameter (8 inches) and rim width to avoid ordering the wrong size.

Key Things to Know

• Quality: Heavy-duty rubber (thicker than standard tubes) resists punctures from thorns or debris, but not slash-proof.
• Installation: Moderate difficulty—requires breaking the tire bead and using tire irons. A tire changer or shop is easier if you lack tools.
• Valve stem: TR87 angled stem fits many mower and cart rims, but check if your rim has a straight valve hole. Angled stems can be trickier to seat on some wheels.
• Common gotcha: Over-inflation can cause bulging or pinch flats. Max pressure is usually 30–35 PSI; check your tire’s sidewall rating.

Should You Buy It

If you need a reliable replacement for a 4.80/4.00-8 tube on a mower, wheelbarrow, or cart, this is a solid, affordable option. It’s best for DIY repairs where durability matters more than a perfect OEM fit—just verify your tire size and rim first.