Details
Description for 4T4866 General Shim
â–¶Specification for 4T4866 General Shim
â–¶Exact Fit Guarantee for 4T4866 General Shim
â–¶Reviews
Customer Reviews
Awesome and diligent support. Would definitely recommend
Great Service!
Very nice job
They were great to deal with
My part was damaged in shipping and everyone was very helpful on get it resolved and sent me another free of charge.
Above and Beyond
Staff took care of issue that was nit created by them. Package was lost by UPS. Propel sent me another part Next Day Air to correct it.
Great company to deal with. Answered my questions with detail and shipped me the part in good time! I will be dealing with them more in the future!
Excelente servicio rapido, responsable y confiable
Received 15 items within 5 days from placing order !
Great. !
Always helpful and great pricing
Product Questions
Frequently Asked Questions
What is the Caterpillar 4T4866 shim used for?
The 4T4866 shim is used to maintain proper spacing, alignment, and clearance between Caterpillar equipment components, helping support smooth and accurate mechanical operation.
What are the benefits of using a high-quality shim?
- Helps maintain precise component alignment
- Reduces uneven wear between connected parts
- Supports stable and efficient equipment performance
Can worn or incorrect shims affect equipment performance?
Yes, improper shim spacing may lead to alignment problems, vibration, uneven wear, or excessive stress on nearby components.
Is the 4T4866 shim compatible with multiple Caterpillar machines?
Compatibility depends on your machine model and assembly requirements. If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.
Why are shims important in heavy equipment assemblies?
Shims help maintain proper tolerances and positioning, which is essential for reducing mechanical stress and ensuring reliable equipment operation.
Are aftermarket replacement shims reliable?
Yes. Premium aftermarket shims that meet or exceed OEM specifications can provide dependable durability and precision for heavy equipment repairs.
Are related spacing components commonly used with this shim?
Yes, components such as the Caterpillar 9D6134 spacer are often used in assemblies requiring accurate spacing and alignment.
Compatible Models
This 4T4866 General Shim is compatible with the following models:
527, 814B, 814F, 814F II, 815B, 815F, 815F II, 816B, 816F, 816F II, 824C, 825C, 825G, 825G II, 825H, 825K, D5R LGP, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D6H, D6H XL, D6H XR, D6R, D6R II & more...
Shipping | Returns
Shipping
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.
Easy Returns
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.
Warranty
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.
Exact Fit Guarantee
Exact Fit Guarantee®
The right part — or we'll make it right.
Order Normally
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Simply place your order.
Not Sure?
Place your order, then send us your serial number before it ships.
We'll verify fit.We Make It Right
Wrong part? We'll make it right.Fast. At our expense.

