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Mitsuboshi Super KB Standard V-Belt 0.5 in. W X 73 in. L For Riding Mowers

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

The Mitsuboshi Super KB Standard V-Belt is a purpose-built replacement designed for riding mowers that rely on a precise, dependable belt to drive the deck and motion system. With…

Mitsuboshi MPN 4LK730A In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $23.99. Our online price is $26.99.
$26.99
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About Product Overview

The Mitsuboshi Super KB Standard V-Belt is a purpose-built replacement designed for riding mowers that rely on a precise, dependable belt to drive the deck and motion system. With a 0.5 inch width and a 73 inch length, this belt fits as a standard 4LK type, delivering consistent power transfer when you need it most.

Why this belt stands out in the field:

  • Exact fit for riding mowers — 0.5 in W x 73 in L, 4LK style ensures compatibility with a wide range of mower models that specify a standard KB belt.
  • Durable, dependable performance — engineered to maintain tension and resist wear under the heat, vibration, and dirt common to lawn care, so you experience smoother operation and longer belt life between replacements.
  • Protective packaging — packaged in a sleeve to shield the belt from scuffs and moisture during shipping and storage, preserving flexibility and reliability until installation.
  • Clear identification — gray color and precise specifications (KB, 4LK, 0.5" x 73") make it easy to verify fitment in your mower’s manual or parts diagram, reducing guesswork during replacement.
  • Designed for riding mowers — specifically chosen to support the belt-driven components of riding mower decks, helping you restore cutting performance and drive reliability quickly.

Who this is for

This belt is ideal for DIY homeowners, lawn-care enthusiasts, and service pros who maintain riding mowers and need a trustworthy, standard-fit belt that aligns with the 4LK specifications. If your mower requires a 0.5 inch wide, 73 inch long belt in the KB/Super KB family, this is a precise, reliable option.

Installation and care tips

For best results, verify your mower model calls for a 4LK belt of 0.5" width and 73" length. When replacing:

  • Ensure the belt routing matches the belt path in your mower’s manual, with no twists or sharp bends.
  • Inspect pulleys and idlers for wear, cracks, or debris that could cause premature belt failure; clean grooves before reinstalling.
  • Route the belt along all pulleys, then adjust belt tension according to your mower’s specifications to prevent slippage.
  • After installation, run the mower briefly to re-check alignment and tension, and listen for unusual noises that may indicate misrouting.

Replacing your belt with the Mitsuboshi Super KB Standard V-Belt helps restore reliable deck performance, improve blade efficiency, and extend the time between service intervals. Trust the 4LK, 0.5" x 73" specification to keep your riding mower operating at peak capacity season after season.

The Details Specifications

Brand Mitsuboshi
SKU 2006328
UPC 034494547307
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 16 × 4 × 1
Weight 0 lbs
Cubic Feet 0.04641 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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