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Weller Truck Parts · Drivetrain
A7331
In stock · ships from Knoxville
This is a synchronizer ring (synchro ring), a brass or bronze clutch-style ring inside a heavy-duty Eaton Fuller manual transmission.
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.
Its job is to match the speed of two rotating gears before they engage, allowing for smooth, clash-free shifting. Over time, the friction surface on the ring wears down, leading to grinding or difficulty shifting, which is the typical reason for replacement. This particular ring is often associated with auxiliary or mainshaft sections of Fuller gearboxes.
Part Number: A7331
SYNCHRONIZER RING
Vendor: Weller Truck Parts
Dealer: KP Services Crossville
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