Details
Description for 4F8421 General Shim
â–¶Specification for 4F8421 General Shim
â–¶Exact Fit Guarantee for 4F8421 General Shim
â–¶Reviews
Customer Reviews
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!
Quick Response. Very much appreciated.
They were great to deal with
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.
Having issue running my credit card, Steven was more than helpful to send me a payment link to complete my transaction!
I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
rapid response!
Great place for Cat parts!
Had some shipping difficulties, but everything was made right. Parts were perfect and an excellent price. Thanks!
Received 15 items within 5 days from placing order !
Great. !
100% excelente
Product Questions
Compatible Models
This 4F8421 General Shim is compatible with the following models:
12E, 16, 44, 46, 613, 621, 621B, 623B, 627B, 630B, 631C, 633, 651, 666, 6A, 7A, 8 SR, 824C, 824S, 834B, 8A, 966C, 977, 988, D6D, D6E, D6E SR, D6G SR, D6G2 XL, D7F, D7G, D9G & 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
Know your part number?
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.

