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Description
04387900 – Ogura® GT1A Clutch (Genuine OEM Part)
The 04387900 Ogura GT1A clutch is a genuine OEM replacement designed for use on select Max Zoom series zero-turn mowers. This engine-driven centrifugal clutch transfers power from the mower’s engine to the cutting deck or drive system, allowing smooth engagement and reliable operation under load.
Manufactured to original specifications, the GT1A clutch provides consistent torque transfer, long service life, and resistance to heat and wear. It is a direct OEM replacement, ensuring proper fit, alignment, and performance without modification. This clutch is commonly replaced when experiencing slippage, excessive wear, or failure to engage.
Key Details
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Brand: Ogura®
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Manufacturer Part Number: 04387900
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Part Type: Centrifugal Clutch
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Model: GT1A
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Application: Engine to deck / drive power transfer
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OEM Status: Genuine replacement for Ariens® / Gravely® equipment
Where Used
Used on select Ariens® / Gravely® Max Zoom zero-turn mowers, including:
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Max Zoom 48
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Max Zoom 52
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Max Zoom 60
(Installs on the engine and drives the cutting deck or mower drive system.)
The 04387900 Ogura GT1A clutch provides reliable power transfer, long service life, and proper OEM fit for compatible Max Zoom mower models.

