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Eaton · Drivetrain
125489
In stock · ships from Knoxville
This is a clutch adjuster, often called an adjusting pinion or quick-adjust lever, for heavy-duty truck manual transmissions.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It lets you manually set the release bearing clearance to maintain proper clutch engagement and pedal feel. Over time, the adjuster gear can wear or seize, making it hard to get the right adjustment; replacing it prevents clutch slippage, dragging, or hard shifting. It’s the factory-style part found on many Eaton Fuller transmissions.
Part Number: 125489
CLUTCH ADJUSTING TOOL
Vendor: Weller Truck Parts
Dealer: Knox Trailers
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