UDC Parts 109-8073 Deck Belt for Exmark Lazer Z 60 in - Durable Aramid

In this review the UDC Parts 109-8073 deck belt is assessed for owners of 60 in Exmark Lazer Z zero turn mowers who need a direct replacement belt that handles heavy load cutting. The bottom line: this belt is a purpose-built replacement with an aramid cord tensile core and a long 198.75 in length that fits a wide range of Exmark Lazer Z AS, E, S and X series decks. It is best for users who want an OEM-fit alternative and smooth engagement during typical lawn care, though some buyers report mixed outcomes on long-term durability.

Key Features

• Dimensions: Measures 0.65 in width by 198.75 in length, providing a precise fit for 60 in Exmark Lazer Z decks that call for this size.
• Aramid cord reinforcement: The internal aramid cords increase tensile strength to resist stretch under high horsepower and heavy shock loads.
• OEM cross-reference: Replaces Exmark part numbers 109-8073, 135-5774, 116-1985, 135-5774-SL and 146-0183 so it drops in where those originals were specified.
• Wide model compatibility: Compatible with numerous Exmark Lazer Z AS, E, S and X series 60 in models, simplifying parts selection for many owners.
• Outer cover design: The cover has a lowered coefficient to resist belt turnover or roll, supporting smoother operation through stop-and-start mowing.
• Designed for aggressive use: Manufactured for outdoor power equipment and heavy duty applications where shock loads are common.

Who It's For

This deck belt is aimed at home owners, landscapers and service shops that maintain Exmark Lazer Z zero turn mowers with a 60 in deck and need a like-for-like replacement for Exmark 109-8073 and its cross-references. It is also suited to operators who run high horsepower engines and want a belt built with aramid cord for improved tensile strength.

Customers who prioritize long-term, heavy commercial use where the belt is under near-continuous heavy stress should evaluate service history and may prefer to monitor early wear; some users reported fast failures, so those needing an extended commercial lifespan should plan to inspect after initial use and keep a spare on hand.

Pros & Cons

Pros

• Good OEM compatibility, replacing multiple Exmark part numbers for straightforward installation.
• Aramid cord core delivers high tensile strength for demanding mower engines.
• Outer cover resists belt turnover, helping maintain consistent engagement and blade drive.
• Easy to fit for most owners and installers familiar with Exmark deck belts.

Cons

• Some customers reported durability concerns, with a minority experiencing premature tearing under heavy use.
• Belt length and fit received mixed feedback from a few users, so double-check model compatibility before purchase.

Specifications

Brand	UDC Mower Belts
Model / Part	109-8073 (replaces Exmark 109-8073, 135-5774, 116-1985, 135-5774-SL, 146-0183)
Width	0.65 in
Length	198.75 in
Core	Aramid cord tensile members
Application	Exmark Lazer Z 60 in decks (AS, E, S, X series) replacement belt

Our Verdict

The UDC 109-8073 deck belt is a strong candidate for anyone needing a direct replacement for Exmark 60 in Lazer Z decks because it matches OEM cross-references, uses aramid cord for extra tensile strength and resists turnover. It represents good value for typical lawn and garden use and for high horsepower residential work, though buyers engaged in continuous heavy commercial mowing should inspect the belt early and keep a spare due to some reported early failures.

Frequently Asked Questions

Will this belt fit my Exmark Lazer Z 60 in mower?
Yes, it is intended to replace Exmark part numbers 109-8073 and related cross-references and fits many Lazer Z AS, E, S and X series 60 in models; verify your model number against the compatibility list.

What makes this belt stronger than standard belts?
The belt uses aramid cord tensile members to increase strength and resistance to stretch under high horsepower and shock loads.

Is installation difficult?
Installation is straightforward for owners familiar with deck belt changes and most customers report the belt fits and installs quickly, often under 10 minutes.