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Premier Freightliner · Hardware & Fasteners
40X1233
In stock · ships from Knoxville
This is a pinion lock nut used on Meritor drive axles with R145 series differential carriers (1992 and later).
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 secures the pinion yoke to the pinion shaft, maintaining the proper preload on the pinion bearings and preventing the yoke from loosening. The nut is typically replaced during pinion seal or bearing service, or if it shows signs of wear, deformation, or loss of torque.
Part Number: 40X1233
LOCKNUT
Category: Misc.
Vendor: Premier Freightliner
Dealer: KP Services Crossville
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