Give your differential's pinion bearing a fresh outer running surface with the Timken Differential Pinion Race 31520, a tapered roller bearing cup. It is a replacement for many trucks and 4x4s, including the 1987-1995 Jeep Wrangler and 1994-1999 Dodge Ram 2500. See the "Vehicles it fits" section for the full list of applications and engine details.
The race is the outer ring of a tapered roller bearing. The tapered rollers of the cone ride against it as the pinion turns. This race is cataloged for the front inner, rear outer and rear inner positions, depending on the application. A whine or growl from the differential that changes on acceleration or coast, or play at the pinion, may be a sign that a pinion bearing needs replacing. Diagnose the cause before replacing parts.
Interchange: 550233-90
211550 · 330342B · BR31520 · KW1233 · 31SP21 · 550233 · 55023390
This part cross-references / interchanges with the following part numbers:
What is the Timken 31520?
It is a tapered roller bearing cup, the outer race of a differential pinion bearing. The tapered rollers of the matching cone ride against it.
Which position does this pinion race fit?
The catalog lists this race for the front inner, rear outer and rear inner positions, depending on the application. Check the "Vehicles it fits" section for your vehicle.
Should I replace the cone at the same time?
Yes. Timken recommends replacing the inner (cone) and the outer (cup) at the same time to maximize reliability and life.
What are signs a pinion bearing may need replacing?
A whine or growl from the differential that changes on acceleration or coast, or play at the pinion, may point to a worn pinion bearing. Diagnose the cause before replacing parts.
Which vehicles does it fit?
It fits many vehicles, including the 1987-1995 Jeep Wrangler and 1994-1999 Dodge Ram 2500. See the "Vehicles it fits" section for the full list.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
