Lawn Mower Belt-Pulley 405143, 532405143 Deck Belt | Fits 46" Deck Husqvarna YTH22V46 YTH20K46 YTH21K46 & More | Aramid Cord | 105.75"
405143 green lawn mower deck belt for 46-inch decks in branded packaging.
Specification chart for 405143 lawn mower deck belt showing dimensions, measurements, and product details.
Comparison graphic showing 405143 deck belt grip and stability versus inferior mower belts prone to slipping.
Infographic showing 405143 deck belt performance features including fatigue life and bonding strength specifications.
Infographic showing 3-layer material construction of 405143 deck belt for Husqvarna 46-inch mower decks.
Green replacement deck belt for Husqvarna and Craftsman 46-inch mower decks with compatibility chart.
Instructional guide for identifying the 405143 deck belt for 46-inch lawn mower cutting decks.
405143 deck belt maintenance guide and compatibility chart for 46-inch Husqvarna and Craftsman lawn mowers.
405143 replacement deck belt for 46-inch Husqvarna lawn mower, showing installation and common mower symptoms.
405143 green lawn mower deck belt for 46-inch decks in branded packaging.
Specification chart for 405143 lawn mower deck belt showing dimensions, measurements, and product details.
Comparison graphic showing 405143 deck belt grip and stability versus inferior mower belts prone to slipping.
Infographic showing 405143 deck belt performance features including fatigue life and bonding strength specifications.
Infographic showing 3-layer material construction of 405143 deck belt for Husqvarna 46-inch mower decks.
Green replacement deck belt for Husqvarna and Craftsman 46-inch mower decks with compatibility chart.
Instructional guide for identifying the 405143 deck belt for 46-inch lawn mower cutting decks.
405143 deck belt maintenance guide and compatibility chart for 46-inch Husqvarna and Craftsman lawn mowers.
405143 replacement deck belt for 46-inch Husqvarna lawn mower, showing installation and common mower symptoms.

405143, 532405143 Deck Belt | Fits 46" Deck Husqvarna YTH22V46 YTH20K46 YTH21K46 & More | Aramid Cord | 105.75"

0.00
$23.40
Save 10% $25.99
$23.40
In stock
Fast Delivery Delivery options available at checkout
30 Day Returns Return Policy

Secure and trusted checkout with

  • Mastercard
  • Visa
  • American Express
  • Discover
  • JCB
  • Diners Club
CONFIRM THIS PART FITS
Enter appliance or equipment model number to verify compatibility with this part

[Grip120] 405143, 532405143 Deck Belt | 105.75"

Key Features

  • Type: Mower Deck Drive Belt
  • Dimensions: 1/2" (Width) x 105.75" (Outer Length)
  • Construction: Aramid fiber cord reinforcement for high tensile strength and resistance to stretching.
  • Material: Engineered with a high-traction compound to reduce slippage and improve power transfer.

Replaces / Cross-Reference Part Numbers

  • 532405143
  • 584453101
  • 21546607
  • 7133156
  • 575937701
  • 265-106
  • 15-022
  • 810-CBL2362T
  • 95805

Compatibility & Fitment

  • Brands: Fits select models from Husqvarna, Craftsman, and Poulan Pro.
  • Deck Size: Specifically for 46-inch cutting decks.
  • Select Husqvarna Models: YTH22V46, YTH20K46, YTH21K46, YTA22V46, YTH2246, YT46LS, YTH18K46.
  • Note: Verify part number in your owner's manual before ordering.

When to Replace

  • Visible damage such as cracks, frayed edges, glazing, or deep abrasions.
  • Belt has stretched, resulting in poor blade engagement or slippage.
  • Noticeable decrease in cutting performance or an uneven cut.
  • Persistent squealing or chattering sounds from the deck during operation.

Installation Tips

  • For safety, disconnect the spark plug wire and set the parking brake before servicing.
  • Document the old belt's routing with a photo or diagram before removal.
  • Ensure all pulleys are clean, spin freely, and are free from damage.
  • Install the new belt following the correct path and routing.
  • Consult your mower's service manual for proper belt tensioning adjustments.
405143, 532405143 Deck Belt | Fits 46" Deck Husqvarna YTH22V46 YTH20K46 YTH21K46 & More | Aramid Cord | 105.75" 1
405143, 532405143 Deck Belt | Fits 46" Deck Husqvarna YTH22V46 YTH20K46 YTH21K46 & More | Aramid Cord | 105.75" 2
405143, 532405143 Deck Belt | Fits 46" Deck Husqvarna YTH22V46 YTH20K46 YTH21K46 & More | Aramid Cord | 105.75" 3
CHECK BEFORE INSTALLING

CHECK BEFORE INSTALLING

Pulley Bearings: Make sure they spin freely, as damaged bearings can increase friction and wear | Pulleys Edges: Rust or sharp edges can cause belt damage | Pulley Grooves: Clean debris from the pulley grooves | Tensioner Spring: A weak spring can lead to belt slippage and increased friction
4 SIMPLE STEPS

4 SIMPLE STEPS

1. Remove key & disconnect spark plug wire(s) to prevent start; let engine cool | 2. Raise & secure deck, remove belt covers | 3. Release tension, remove old belt (note/take photos of routing) | 4. Install new belt, rotate blades/spindle to check alignment & operation.

Compatible Models

Locate the model number of your appliance or equipment on the manufacturer's label and use it to check compatibility before ordering

Loading compatible models…

FAQs

This belt is used on many 46-inch deck lawn tractors across Husqvarna, Craftsman, Poulan Pro, Poulan, AYP, Jonsered, and some Ariens applications. Models commonly associated with this belt include Husqvarna YTH22V46, YTH20K46, YTH21K46, YTA22V46, YTH2246, YT46LS, YTH18K46, YTH224T, YTH2146, YTA1946, YTH22K46, YTH22V42, 2246LS, and YTH2146X. Because 46-inch decks can use different belt routings depending on build date and deck version, match your mower's model number and existing belt numbers before ordering.
This belt cross-references OEM numbers 405143, 532405143, and 584453101. Additional numbers associated with this belt family include 21546607, 7133156, PP21008, and 575937701. The safest match is to compare the number printed on your old belt or confirm from your mower's parts diagram.
Typical symptoms include the blades not engaging, weak or uneven cutting, belt squealing, burning-rubber smell, visible cracks or glazing, frayed belt edges, or the belt jumping off the pulleys. On 46-inch riding mower decks, a stretched belt can also cause slow blade spin even when the PTO is engaged.
For most 46-inch Husqvarna/Craftsman/Poulan-style decks, this is usually a moderate repair. Many owners complete it in about 30 to 90 minutes. Typical tools include a socket set or wrench set, pliers for spring removal if needed, work gloves, and sometimes a deck washout scraper or brush to clean debris while the belt is off. On some tractors, lowering or removing the deck gives much easier access to the idlers and belt keepers.
The most common causes are normal wear, heat buildup from heavy mowing, seized or rough idler pulleys, bent belt keepers, debris packed around the spindle housings, and misrouting during a previous repair. A belt can also wear prematurely if the deck is run with bad spindle bearings or if the PTO is engaged at high engine speed repeatedly.
Before installation, inspect the idler pulleys, mandrel/spindle pulleys, belt guides, tension spring, and blade spindles. Spin each pulley by hand and listen for grinding or wobble. Clean built-up grass from the deck, and compare the old belt routing to the deck diagram. If a pulley is seized or a keeper is bent, a new belt may wear out quickly or come off again.
This belt family is commonly listed at about 1/2 inch wide and roughly 105-3/4 inches long, with some listings rounding that to 106 inches. Those descriptions are generally referring to the same replacement belt application. The important match points are the OEM numbers 405143 / 532405143 / 584453101 and the correct 46-inch deck application.