Worldwide Shipping
4512177 CAT Washer-Har
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Secure Checkout
•
Trusted Since 2012
Details
Description for 4512177 Washer
â–¶Specification for 4512177 Washer
â–¶Exact Fit Guarantee for 4512177 Washer
â–¶Reviews
Customer Reviews
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
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!
Always helpful and great pricing
I’ve been ordering parts from propel for about 3 years & counting. I live in Hawaii where we have a hard time getting parts especially for decent prices with fast shipping. I've been 100% satisfied with the company and the customer service and will continue to use them. I recommend propel to everyone here in Hawaii and we are all happy to have you guys. Thank you!!!
Great prices prompt courteous customer service and fast shipping.
Excellent experience.
Mike has been very helpful. I am looking forward to keep doing business with them
Quick Response. Very much appreciated.
Our CSR for Dymax Inc., Deb, has been extremely helpful and consistently provides quick, accurate information regarding parts and inventory. When we encounter difficulties finalizing transactions through the internal website, she is able to promptly generate quotes and provide an external, secure method for payment. Her responsiveness and willingness to assist play a key role in supporting our team’s success.
GREAT CUSTOMER SERVICED
WANTED TO THANK PROPEL PARTS FOR THEIR ATTENTION TO AN URGENT MATTER I HAD. THEY RESPONDED QUICKLY & RESOLVED IT. I ALSO WANTED TO MENYTION THAT OUR CUSTOMER'S ARE VERY HAPPY WITH THE PARTS EWE HAVE BEEN ORDERING FROM PROPEL. WE WILL DEFINITLEY CONTINUE TO DO BUSINESS.
Great service affordable parts
Product Questions
Frequently Asked Questions
What is the Caterpillar 4512177 hard washer used for?
The 4512177 hard washer is designed to distribute fastening load evenly across Caterpillar equipment assemblies, helping improve bolt stability and reduce wear caused by vibration.
What are the benefits of using a high-quality hard washer?
- Improves load distribution across fastening surfaces
- Helps reduce vibration-related loosening
- Supports longer service life for connected components
What are common signs that a hard washer should be replaced?
Common signs include flattening, cracking, corrosion, deformation, or uneven wear affecting fastening performance.
Can a damaged washer affect equipment reliability?
Yes, a worn washer may reduce clamping force, increase vibration, and contribute to premature wear of surrounding parts.
Is the 4512177 hard washer compatible with multiple Caterpillar machines?
Yes, this washer may fit various Caterpillar equipment applications depending on assembly type. Check your manual or reach out to Propel Parts for help verifying fitment.
Are aftermarket hard washers dependable?
Yes. High-quality aftermarket hard washers that meet or exceed OEM specifications provide dependable fastening support and durability in demanding applications.
Are related fastening components commonly used with this washer?
Yes, products such as the Caterpillar 1D4588 cap screw are commonly paired with hard washers to improve fastening stability.
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.