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Description
109-8076 – Idler Pulley (3BT) (Genuine OEM Replacement Part)
The 109-8076 Idler Pulley (3BT) is a genuine OEM replacement pulley designed to maintain proper belt tension and ensure smooth, efficient power transmission in compatible commercial lawn mowers and outdoor power equipment. As a critical component of the mower's drive or deck belt system, this idler pulley helps reduce belt wear, minimize slippage, and promote consistent equipment performance.
Manufactured to original equipment specifications, the 109-8076 Idler Pulley is built from heavy-duty materials with a precision-machined bearing for long-lasting durability in demanding commercial mowing applications. Replacing a worn or damaged idler pulley helps restore proper belt alignment, reduce vibration, and extend the life of your belt system.
Key Features
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Part Number: 109-8076
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Part Type: Idler Pulley (3BT)
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OEM Quality: Genuine OEM replacement part
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Function: Maintains belt tension and guides belt movement
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Construction: Heavy-duty steel pulley with precision bearing
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Installation: Direct OEM replacement
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Designed For: Commercial lawn mowers and outdoor power equipment
Compatibility
The 109-8076 Idler Pulley is compatible with select commercial lawn mowers and outdoor power equipment requiring OEM part number 109-8076.
Always verify your equipment model, serial number, and illustrated parts diagram before ordering to ensure correct fitment.
Who Is This For?
Ideal for:
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Professional landscapers
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Commercial mowing contractors
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Golf course maintenance crews
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Municipal grounds departments
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Equipment repair technicians
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Property maintenance professionals
Applications
Commonly used in:
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Mower deck belt systems
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Drive belt systems
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Belt tensioner assemblies
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PTO belt routing systems
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Commercial zero-turn mowers
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Heavy-duty turf maintenance equipment
Pros
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Genuine OEM replacement quality
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Maintains proper belt tension and alignment
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Precision bearing ensures smooth operation
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Helps reduce belt wear and slippage
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Built for demanding commercial use
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Direct-fit installation
Cons
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Fits only compatible equipment using OEM part number 109-8076
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Bearings are wear items and should be inspected during routine maintenance
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Belt condition should also be checked when replacing the pulley
Comparison – Genuine OEM vs Aftermarket Idler Pulleys
| Genuine OEM 109-8076 | Generic Aftermarket Pulley |
|---|---|
| Exact OEM dimensions and fit | Fitment may vary |
| Premium bearing for smooth operation | Bearing quality may differ |
| Heavy-duty commercial construction | Durability varies by manufacturer |
| Maintains proper belt tracking | Increased risk of belt misalignment |
| Long service life | May wear prematurely |
Why Buy from Barry's?
At Barry's, we supply genuine OEM replacement parts trusted by professional landscapers, commercial mowing crews, and equipment service technicians.
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Genuine OEM replacement parts
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Fast shipping throughout the USA
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Competitive pricing
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Expert customer support
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Trusted source for commercial mower pulleys, belts, and outdoor power equipment parts
Keep your mower operating at peak performance with the 109-8076 Idler Pulley (3BT). Engineered to OEM specifications, this durable replacement pulley provides reliable belt tension, smooth operation, and long-lasting performance for demanding commercial mowing applications.

