New 3E4878 Bushing Replacement suitable for Caterpillar Equipment
- New Bushing Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 3E4878 Bushing
â–¶Specification for 3E4878 Bushing
â–¶Exact Fit Guarantee for 3E4878 Bushing
â–¶| Dimensions | 1.57x1.57x1.57 |
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Great service affordable parts
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Fast response and very attentive! Thanks Deb.
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Great customer service
Anthony was very professional and on top of what needed to be done to get my order verified and moving forward. -
customer service and parts availability is fantastic
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La mejor experiencia y calidad
Frequently Asked Questions
What is the 3E4878 bearing used for?
The 3E4878 bearing provides a low-friction surface that lets a shaft or component rotate smoothly under load. It carries the load and helps maintain correct clearance.
How do I install the 3E4878 bearing?
Fitting the 3E4878 correctly comes down to clean surfaces and following the manual sequence. Work through these steps:
- Shut down and let the assembly cool, then follow safe service procedures
- Remove the old bearing and inspect the journal or housing
- Clean all surfaces and check clearances against the manual
- Fit the 3E4878 with the correct orientation and seating
- Lubricate as directed and confirm the assembly turns freely
Which Caterpillar machines is the 3E4878 compatible with?
The 3E4878 bearing is used across many Caterpillar applications, but the correct fit depends on your exact model and assembly. Always cross-check fitment using your service manual or part reference guide before ordering. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 3E4878 bearing meet performance standards?
Yes. The 3E4878 is built to meet OEM specifications for fit, strength, and service life. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to keep the assembly protected.
How often should the 3E4878 be replaced?
Service life for the 3E4878 depends on operating conditions and load. Replace it on inspection findings or at the interval your manual specifies rather than waiting for a failure.
What are the signs of a worn or failing 3E4878 bearing?
When the 3E4878 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- Knocking, rumbling, or whining under load
- Excessive play or movement in the assembly
- Metal particles in the oil or on inspection
- Scored, pitted, or discolored bearing surfaces
Why is the 3E4878 important, and what related parts work with it?
Replacing the 3E4878 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. Related hardware on our site includes 1043560 Seal Liner and 8H9204 Washer.

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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