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White flat-free polyurethane wheel with sawtooth tread and steel hub

Marathon Motors

Marathon Motors 00145 Flat-Free Polyurethane Wheel 400 lb

SKU CH-Q9XW-E6EQ7

Flat-free polyurethane wheel supports 400 lb loads with sawtooth tread and non-marking steel hub for 3/4 in axle

  • Product typeWheelbarrows & Carts
  • Flat-free polyurethane foam eliminates punctures and downtime
  • 400 lb load rating supports heavy garden and yard loads
  • Sawtooth tread pattern provides grip on grass, gravel and pavement
  • Non-marking wheel protects patios, decks and indoor floors from scuffs
  • Fits 3/4 in axle with 4.10/3.50-6 sizing for easy replacement

Marathon Motors 00145 Flat-Free Wheel

This Marathon Motors 00145 wheel replaces pneumatic tyres on wheelbarrows, garden carts and light utility trailers. The flat-free polyurethane foam construction removes the risk of punctures while supporting loads up to 400 lb. A sawtooth tread pattern provides grip on grass, gravel and paved surfaces without marking floors or patios. It suits homeowners and landscapers who want zero-maintenance mobility for everyday yard tasks.

Installation and common issues

The wheel mounts on a 3/4 in axle using the centred steel hub, which measures 4 31/64 in long. Slide the hub onto the axle, secure the retaining hardware and confirm the wheel spins freely. The most common issue is reusing worn axle washers or cotter pins that allow lateral play; replace them at the same time. Ensure the hub seats squarely so the 1 7/8 in tread width tracks straight under load.

Compatibility checks before ordering

Verify that your equipment uses a 3/4 in axle and accepts a centre-mount hub with the stated hub length. Confirm the tyre size designation 4.10 / 3.50 -6 matches the original tyre sidewall marking. Check that the 12 13/32 in overall diameter clears the frame and any brake or fender brackets. The non-marking polyurethane tread is safe for indoor floors, but buyers needing pneumatic cushioning for very rough terrain should consider a different tyre type.

How it compares

Measured against everything we stock in General Yard & Utility Tools, at today’s prices. Recalculated every night.

Price $30.99
Typical for this category: the median of 1,487 items is $32.99.

Specifications

Product
Brand nameMARASTAR
Product typeWheelbarrows & Carts

Questions about this item

How can I confirm the wheel rolls smoothly and supports the 400 lb load rating after mounting it on my cart?

Install the wheel on a 3/4 in axle, verify the center-mount hub seats flush, then load the cart up to 400 lb and check that the flat-free polyurethane foam tyre with sawtooth tread rolls without wobble or marking the floor.

What components come with the MARASTAR 00145 wheel and what must I supply separately?

The box contains the 12 13/32 in diameter polyurethane foam wheel with steel hub, 4 31/64 in hub length and 1 7/8 in width; you must provide a 3/4 in axle, retaining hardware and any spacers required for your specific cart.

Which version of this flat-free wheel matches a 4.10/3.50-6 tyre size and standard rim?

Choose the MARASTAR 00145 model — it is built to the 4.10/3.50-6 specification, fits a standard tire rim, has a 400 lb load rating, non-marking polyurethane foam and a sawtooth tread pattern.

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