New 7D8878 Washer Replacement suitable for Caterpillar Equipment
- New Washer Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 7D8878 Washer
â–¶Specification for 7D8878 Washer
â–¶Exact Fit Guarantee for 7D8878 Washer
â–¶| Dimensions | 6.10x6.10x0.39 |
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Frequently Asked Questions
What is the 7D8878 washer used for?
The 7D8878 is a washer that distributes load under a bolt or nut, guarding the mating surface and supporting consistent clamp force.
How do I install the 7D8878 washer?
To install the 7D8878 properly, prepare the area first and confirm the result afterward. Use these steps:
- Power down the machine and isolate the assembly before service
- Clean the seating surface and check it for damage or burrs
- Place the 7D8878 in the correct orientation under the fastener
- Torque the fastener to specification so the washer seats evenly
Which Caterpillar machines is the 7D8878 compatible with?
Fitment for the 7D8878 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 7D8878 washer meet performance standards?
Yes. The 7D8878 is manufactured to meet OEM specifications for tolerance and material quality. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications for dependable, long-term performance.
How often should the 7D8878 be replaced?
Plan to replace the 7D8878 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit. When servicing this area, the 5M3062 Bolt is commonly replaced at the same time.
What are the signs of a worn or failing 7D8878 washer?
A worn 7D8878 usually gives early warning through the assembly it supports. Watch for these signs:
- A joint that won’t hold torque
- Cupping, cracking, or flattening of the washer
- Marking or embedding into the mating surface
- Corrosion that weakens the contact area
Why is the 7D8878 washer important, and what related part is commonly replaced with it?
A sound 7D8878 is inexpensive insurance against larger repairs. Servicing it on time with parts that meet OEM specifications keeps the whole assembly working as intended. During an overhaul, the 8T4956 Hex Cap Screw is frequently replaced alongside this part.

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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